CN105045990B - The measuring method of lead bismuth eutectic alloy physical properties of fluids parameter and use its simulation system - Google Patents
The measuring method of lead bismuth eutectic alloy physical properties of fluids parameter and use its simulation system Download PDFInfo
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Abstract
The present invention provides a kind of measuring method of lead bismuth eutectic alloy physical properties of fluids parameter, this method includes：Measure the physical parameter of particulate matter in lead bismuth eutectic alloy fluid, the physical parameter of particulate matter in the lead bismuth eutectic alloy fluid is introduced into the calculating of lead bismuth eutectic alloy physical properties of fluids parameter, obtain the physical parameter calculation formula of the lead bismuth eutectic alloy fluid of the particulate matter containing multiple types, and it is programmed according to the calculation formula, the physical parameter of lead bismuth eutectic alloy fluid is calculated in real time, thereby completing the present invention；The measuring method of lead bismuth eutectic alloy physical properties of fluids parameter provided by the invention improves the accuracy for calculating lead bismuth eutectic alloy physical properties of fluids parameter, and can calculate the physical parameter of the lead bismuth eutectic alloy fluid of the particulate matter containing multiple types under various operating modes continuously, in real time.
Description
Technical field
The present invention relates to nuclear reactor safety analysis field more particularly to a kind of lead bismuth eutectic alloy physical properties of fluids parameters
Measuring method and use its simulation system.
Background technology
Since later stage the last century 80's, the subcritical system (ADS) of fast device driving is used as a kind of advanced transmuting
Heap-type is increasingly becoming the hot spot of international research.The subcritical system (ADS) that the U.S., European Union, Japan and other countries drive fast device
Research be included in national strategic plan.Its composition includes：External source neutron-producing target middle high current proton precessional magnetometer and secondary can face
Boundary's reactor is a kind of efficient nuclear waste transmuting stove and incinerator.Lead bismuth eutectic alloy (LBE) is current Accelerator driven
Preferred coolant material and spallation target in subcritical system (ADS) design, wherein the mass percent of lead and bismuth is respectively
44%~45% and 55%~56%.
Lead bismuth eutectic alloy in process of production, inevitably mixes impurity, wherein fusing point is than lead bismuth eutectic alloy
If the high impurity of fusing point cannot still melt under the conditions of reactor operation, by the form of particulate matter with lead bismuth eutectic close
Golden (LBE) flows in the coolant channels together.During flowing, shear action and stream of the particulate matter to structural material
Body will generate new particulate matter to the erosion corrosion effect of structural material, while coolant channel being accelerated to corrode.It threatens anti-
It answers heap safe, shortens reactor lifetime.The research of particulate matter is concentrated mainly on Common fluids, such as empty gas and water etc., it is right
The subcritical system (ADS) of Accelerator driven carries out before safety analysis, it is necessary to have clearly to the various hot physical property of coolant
The understanding of Chu.2006, Koji etc. obtained the hot physical property formula of lead bismuth eutectic alloy on the basis of summarizing forefathers' experimental data
[Koji M.,Werner M.,Michael F.,Hidemas Y..Thermophysical Properties of Lead-
Bismuth Eutectic Alloy in Reactor Safety Analyses[J].Journal of Nuclear
Science and Technology,2006,43(5):526-536.]；2009, all great waves etc. were ground to having carried out theoretical and experiment
Study carefully [ZHOU Tao, YANG Ruichang, WANG Shichao.Visual experiment research of the
inhaled particle thermophoresis deposition rule in the rectangle turbulent
flow tube[J].Applied Thermal Engineering,2009,29(5):1138–1145.]；J.C.Barrett etc.
Have studied influence [J.C.Barrett, C.F.Clement, the A.B.S.Virdee That electric field moves radioactive grain
removal of radioactive aerosols by electric fields[J]Journal of Aerosol
Science,2009,40(3):185–192.]；2013, your small dragon etc. carried out Numerical-Mode to PM1 particles deposition in narrow passage
[PM1 particles deposit numerical simulation comparative study in two kinds of section narrow passages of Ru little Long, Zhou Tao, Lin Daping, Yang Xu for quasi- research
[J] Nuclear Power Engineerings, 2013,34 (s1):42-46.]；2013, Liu Mengying, perillaseed prestige etc. were successively fitted by data to lead
The hot physical property of bismuth eutectic alloy is studied, and has been worked out relative program and has been calculated, and is obtained a series of relevant pure with temperature
LBE physical parameters [perillaseed prestige, Zhou Tao, Liu Meng shadows liquid lead bismuth alloy study on thermal property [J] nuclear technology, 2013,36 (9):1-
5.])。
But in these programs and research, program can not calculate the hot physical property of LBE continuously, in real time.Meanwhile these
Research does not all account for influence of the presence of particulate matter to the hot physical property of lead bismuth eutectic alloy.Particulate matter is with lead bismuth eutectic alloy one
It rises and is migrated in reactor, localized clusters phenomenon occurs in transition process.The change that can cause physical parameter, to influence heap
The actual condition and actual power of core, safety and its actual power of influence, the existing reactor designing technique of Threat Reaction heap
In, due to not accounting for the influence of particulate matter, cause the reactor exchange capability of heat of design and actual exchange capability of heat variant,
Security risk is brought, the generation of peril is even resulted in.
It would therefore be highly desirable to which inventing one kind can calculate under various operating modes continuously, in real time containing a plurality of types of fine grain
The method of lead bismuth eutectic alloy physical properties of fluids parameter, and be required to carry out reactor analog simulation according to this method be
System.
Invention content
In order to solve the above-mentioned technical problem, present inventor has performed sharp studies, adopt the following technical scheme that：Measure lead bismuth
The physical parameter of particulate matter in the lead bismuth eutectic alloy fluid is introduced by the physical parameter of particulate matter in eutectic alloy fluid
In the calculating of lead bismuth eutectic alloy physical properties of fluids parameter, the physical property of the lead bismuth eutectic alloy fluid of the particulate matter containing multiple types is obtained
Parameter calculation formula, and programmed according to the calculation formula, the physical parameter of lead bismuth eutectic alloy fluid is surveyed in real time
It calculates, thereby completing the present invention.
Present invention aims at provide following aspect：
(1) a kind of measuring method of lead bismuth eutectic alloy physical properties of fluids parameter, which is characterized in that the measuring method include with
Lower step：
(I) physical parameter of particulate matter in lead bismuth eutectic alloy fluid is measured；
(II) lead bismuth eutectic is calculated according to the physical parameter of particulate matter in the lead bismuth eutectic alloy fluid measured in step (I)
Alloy physical properties of fluids parameter.
(2) measuring method of the lead bismuth eutectic alloy physical properties of fluids parameter according to above-mentioned (1), which is characterized in that institute
It includes that impurity in lead bismuth eutectic alloy fluid and the impurity are respectively acting on instead with lead bismuth eutectic alloy fluid to state particulate matter
Other substances answered heap material and generated.
(3) measuring method of the lead bismuth eutectic alloy physical properties of fluids parameter according to above-mentioned (1) or (2), feature exist
In, the lead bismuth eutectic alloy physical properties of fluids parameter include the density of lead bismuth eutectic alloy fluid, dynamic viscosity, thermal conductivity, ratio
Thermal capacitance and the coefficient of cubical expansion.
(4) measuring method of the lead bismuth eutectic alloy physical properties of fluids parameter according to one of above-mentioned (1) to (3) item,
It is characterized in that, the density calculation formula such as following formula (one) in the lead bismuth eutectic alloy physical properties of fluids parameter：
Wherein,
ρLBECalculation formula such as following formula (two)：
ρLBE=10529 × [1-1.07978 × 10-4× (T-398.15)] formula (two)
ρpCalculation formula such as following formula (three)：
αpCalculation formula such as following formula (four)：
In above-mentioned formula (one) to formula (four),
ρ indicates the density of lead bismuth eutectic alloy fluid,
ρLBEIndicate the density of pure lead bismuth eutectic alloy fluid,
ρpIndicate the phase average density of particulate matter in lead bismuth eutectic alloy fluid,
ρiIndicate the density of each particulate matter in lead bismuth eutectic alloy fluid,
M indicates the quality of lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
V indicates the volume of lead bismuth eutectic alloy fluid,
VLBEIndicate the volume of pure lead bismuth eutectic alloy fluid,
VpIndicate the volume of particulate matter in lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid,
αiIndicate the volume fraction of each particulate matter in lead bismuth eutectic alloy fluid.
(5) measuring method of the lead bismuth eutectic alloy physical properties of fluids parameter according to one of above-mentioned (1) to (4) item,
It is characterized in that, the dynamic viscosity in the lead bismuth eutectic alloy physical properties of fluids parameter calculates formula such as following formula (five)：
η=ηLBE(1+2.5αP) formula (five)
Wherein,
ηLBECalculation formula such as following formula (six)：
In above-mentioned formula (five) to formula (six),
η indicates the dynamic viscosity of lead bismuth eutectic alloy fluid,
ηLBEIndicate the dynamic viscosity of pure lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
(6) measuring method of the lead bismuth eutectic alloy physical properties of fluids parameter according to one of above-mentioned (1) to (5) item,
It is characterized in that, the thermal conductivity calculation formula such as following formula (seven) in the lead bismuth eutectic alloy physical properties of fluids parameter：
Wherein,
λLBECalculation formula such as following formula (eight)：
λLBE=6.854+1.018 × 10-2T formulas (eight)
In above-mentioned formula (seven) to formula (eight),
λ indicates the thermal conductivity of lead bismuth eutectic alloy fluid,
λLBEIndicate the thermal conductivity of pure lead bismuth eutectic alloy fluid,
λpIndicate the thermal conductivity of particulate matter in lead bismuth eutectic alloy fluid,
Q indicates the heat flow of lead bismuth eutectic alloy fluid,
QLBEIndicate the heat flow of pure lead bismuth eutectic alloy fluid,
QpIndicate the heat flow of particulate matter in lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
A indicates the heat transfer area of lead bismuth eutectic alloy fluid,
ALBEIndicate the heat transfer area of pure lead bismuth eutectic alloy fluid,
ApIndicate the heat transfer area of particulate matter in lead bismuth eutectic alloy fluid,
Indicate lead bismuth eutectic alloy fluid in, fluid infinitesimal along the thickness direction of the fluid infinitesimal rate of temperature change,
Wherein, dt indicates that the temperature difference of fluid infinitesimal both side surface in lead bismuth eutectic alloy fluid, dx indicate lead bismuth eutectic alloy fluid
The thickness of middle fluid infinitesimal,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
(7) measuring method of the lead bismuth eutectic alloy physical properties of fluids parameter according to one of above-mentioned (1) to (6) item,
It is characterized in that, the specific heat capacity calculation formula such as following formula (nine) in the lead bismuth eutectic alloy physical properties of fluids parameter：
Wherein,
cLBECalculation formula such as following formula (ten)：
cLBE=159.0-2.0302 × 10-2T formulas (ten)
CM,pCalculation formula such as following formula (11)：
In above-mentioned formula (nine) to formula (11),
C indicates the specific heat capacity of lead bismuth eutectic alloy fluid,
cLBEIndicate the specific heat capacity of pure lead bismuth eutectic alloy fluid,
cpIndicate the specific heat capacity of particulate matter in lead bismuth eutectic alloy fluid,
Q indicates the heat flow of lead bismuth eutectic alloy fluid,
CM,pIndicate the phase mass percent of particulate matter in lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
Δ T indicates the temperature variation of lead bismuth eutectic alloy fluid,
M indicates the quality of lead bismuth eutectic alloy fluid,
MLBEIndicate the quality of pure lead bismuth eutectic alloy fluid,
MpIndicate the quality of particulate matter in lead bismuth eutectic alloy fluid,
ρLBEIndicate the density of pure lead bismuth eutectic alloy fluid,
ρpIndicate the phase average density of particulate matter in lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
(8) measuring method of the lead bismuth eutectic alloy physical properties of fluids parameter according to one of above-mentioned (1) to (7) item,
It is characterized in that, the coefficient of cubical expansion calculation formula such as following formula (12) in the lead bismuth eutectic alloy physical properties of fluids parameter：
Wherein,
αLBECalculation formula such as following formula (13)：
In above-mentioned formula (12) to formula (13),
αvIndicate the coefficient of cubical expansion of lead bismuth eutectic alloy fluid,
αLBEIndicate the coefficient of cubical expansion of pure lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
ρLBEIndicate the density of pure lead bismuth eutectic alloy fluid；
ρpIndicate the phase average density of particulate matter in lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid,
Indicate the change rate of the density with temperature of pure lead bismuth eutectic alloy fluid,
Indicate the change rate of the phase average density with temperature of particulate matter in lead bismuth eutectic alloy fluid.
(9) a kind of simulation system, which is characterized in that the simulation system includes for storing such as above-mentioned (4)-(8) item Chinese style
(1) to the computing module of formula (13) calculation formula, the simulation system is for simulating measuring and calculating lead bismuth eutectic alloy fluid
Physical parameter, used measuring method is as described in one of (1)-(8) item.
According to the measuring method of lead bismuth eutectic alloy physical properties of fluids parameter provided by the invention, have the advantages that：
(1) measuring method of lead bismuth eutectic alloy physical properties of fluids parameter provided by the invention, which improves, calculates the conjunction of lead bismuth eutectic
The accuracy of golden physical properties of fluids parameter；
(2) measuring method of lead bismuth eutectic alloy physical properties of fluids parameter provided by the invention can calculate continuously, in real time
The physical parameter of the lead bismuth eutectic alloy fluid of the particulate matter containing multiple types under various operating modes.
Description of the drawings
Fig. 1 is shown according to a kind of measuring method of the lead bismuth eutectic alloy physical properties of fluids parameter of preferred embodiment of the present invention
Flow chart.
Specific implementation mode
Present invention will now be described in detail, and the features and advantages of the invention will become more with these explanations
It is clear, clear.
Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the accompanying drawings
In terms of kind, but unless otherwise indicated, it is not necessary to attached drawing drawn to scale.
In a preferred embodiment according to the present invention, as shown in fig. 1, which includes the following steps：
(I) physical parameter of particulate matter in lead bismuth eutectic alloy fluid is measured；
(II) lead bismuth eutectic is calculated according to the physical parameter of particulate matter in the lead bismuth eutectic alloy fluid measured in step (I)
Alloy physical properties of fluids parameter, wherein the lead bismuth eutectic alloy, English abbreviation LBE are mainly made of lead and bismuth；Institute
Stating lead bismuth eutectic alloy has very low eutectic melting point, and in eutectic melting point, two kinds of ingredients of lead bismuth can be with infinitely dissolve, and closes
The mass percent of lead and bismuth is respectively 44%~45% and 55%~56% in gold, and lead bismuth eutectic alloy is mainly as coolant
Material and spallation target are widely used in nuclear reactor.
In one preferred embodiment, the particulate matter includes impurity in lead bismuth eutectic alloy fluid and described miscellaneous
Matter and lead bismuth eutectic alloy fluid are respectively acting on pile materials and other substances for generating, that is, due to lead bismuth eutectic alloy
Impurity is inevitably mixed in fluid, the wherein fusing point impurity higher than lead bismuth eutectic alloy fusing point is in reactor operation condition
Cannot still be melted if lower, by the form of particulate matter as lead bismuth eutectic alloy flows in the coolant channels together,
During flowing, particulate matter is to the shear action of reactor structural material and lead bismuth eutectic alloy fluid to reactor structure
The erosion corrosion effect of material will generate new particulate matter, the physical parameter of these particulate matters in lead bismuth eutectic alloy fluid
The calculating of lead bismuth eutectic alloy physical properties of fluids parameter will be had an impact；In addition, the exchange capability of heat of reactor is to influence reaction
One key factor of heap safety, the exchange capability of heat have very big correlation with lead bismuth eutectic alloy physical properties of fluids parameter, so
Influence tool of the physical parameter of particulate matter to it is considered when calculating the various physical parameters of coolant-lead bismuth eutectic alloy fluid
There is prodigious practical significance.
Physical parameter is mainly the data that can material reach requirement in terms of work processed, and different materials have different physical property ginsengs
Number, such as fusing point, boiling point, density, impact strength, tensile strength, melt and dissolved index, thermal coefficient, heat transfer coefficient, the coefficient of heat transfer.
In the present invention, the lead bismuth eutectic alloy physical properties of fluids parameter refers to that lead bismuth eutectic alloy fluid is each in thermal conduction study
A thermal physical property parameter, such as density, dynamic viscosity, thermal conductivity, specific heat capacity and the coefficient of cubical expansion.
In one preferred embodiment, the lead bismuth eutectic alloy physical properties of fluids parameter includes lead bismuth eutectic alloy stream
Density, dynamic viscosity, thermal conductivity, specific heat capacity, the coefficient of cubical expansion and the surface tension of body, wherein：
Density is the quality in matter per unit volume, and in the present invention, the density of the lead bismuth eutectic alloy fluid is
Refer to lead bismuth eutectic alloy fluid units volume in quality, with ambient temperature, pressure variation and change, influence reactor and change
The parameter of thermal energy power also has surface film thermal conductance etc., between the density and reactor exchange capability of heat of the lead bismuth eutectic alloy fluid
Relationship be：Density increases, and the heat that the fluid of same volume is taken out of later by runner is more, and fluid temperature (F.T.) is made to reduce, from
And the temperature difference between fluid and heat-transfer surface is improved, improve heat exchange power.
In the present invention, the density values of the lead bismuth eutectic alloy fluid are equal to the quality and body of lead bismuth eutectic alloy fluid
The quotient of product；The density values of the lead bismuth eutectic alloy fluid are also equal to the density of pure lead bismuth eutectic alloy fluid and its volume
Product and lead bismuth eutectic alloy fluid in particulate matter phase average density and its volume product summation, and above-mentioned institute's value is removed
With the volume of lead bismuth eutectic alloy fluid；The density values of the lead bismuth eutectic alloy fluid are also equal to 1 and subtract the conjunction of lead bismuth eutectic
Numerical value in golden fluid obtained by the phase volume fraction of particulate matter is multiplied by the density of pure lead bismuth eutectic alloy fluid, along with lead bismuth is total
The product of the phase average density and phase volume fraction of particulate matter in peritectic alloy fluid；Wherein, the density of pure lead bismuth eutectic alloy fluid
The poor multiplication by constants one of numerical value one undetermined is subtracted equal to 1, the numerical value one undetermined is that the temperature of pure lead bismuth eutectic alloy fluid subtracts
Go the poor multiplication by constants two obtained by eutectic melting point, wherein the numerical value of the pure lead bismuth eutectic alloy fluid eutectic melting point is preferably
398.15, the constant one is preferably 10529, and the constant two is preferably 1.07978 × 10-4.Heretofore described eutectic
Fusing point, constant one and constant two are all evaluations commonly used in the art, and concrete numerical value can be according to different source sides
Journey and adjusted, it is above-mentioned that provide is most preferably to implement data in the present invention；Particle in the lead bismuth eutectic alloy fluid
The phase volume fraction of object is equal to the sum of the volume fraction of each particulate matter in lead bismuth eutectic alloy fluid；The lead bismuth eutectic alloy
The phase average density of particulate matter is equal to the density of each particulate matter and multiplying for volume fraction in lead bismuth eutectic alloy fluid in fluid
The phase volume fraction of the sum of product particulate matter again divided by the lead bismuth eutectic alloy fluid.
In one preferred embodiment, the density calculation formula in the lead bismuth eutectic alloy physical properties of fluids parameter is such as
Following formula (one)：
Wherein,
ρLBECalculation formula such as following formula (two)：
ρLBE=10529 × [1-1.07978 × 10-4× (T-398.15)] formula (two)
ρpCalculation formula such as following formula (three)：
αpCalculation formula such as following formula (four)：
In above-mentioned formula (one) to formula (four),
ρ indicates the density (kg/m of lead bismuth eutectic alloy fluid3),
ρLBEIndicate the density (kg/m of pure lead bismuth eutectic alloy fluid3),
ρpIndicate the phase average density (kg/m of particulate matter in lead bismuth eutectic alloy fluid3),
ρiIndicate the density of each particulate matter in lead bismuth eutectic alloy fluid,
M indicates the quality (kg) of lead bismuth eutectic alloy fluid,
T indicates the temperature (K) of pure lead bismuth eutectic alloy fluid,
V indicates the volume (m of lead bismuth eutectic alloy fluid3),
VLBEIndicate the volume (m of pure lead bismuth eutectic alloy fluid3),
VpIndicate the volume of particulate matter in lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid,
αiIndicate the volume fraction of each particulate matter in lead bismuth eutectic alloy fluid
The unit of each numerical value provided in the present invention is all SI units, wherein αpIt is by measuring in real time with T
It obtains, density is that rule of thumb formula determines.
Dynamic viscosity is two liquid levels, 1 unit apart, and area is respectively 1 unit, and relative moving speed is 1 unit
When generated resistance, in the present invention, the dynamic viscosity of the lead bismuth eutectic alloy fluid is being considered by particulate matter
In the case of influence, in lead bismuth eutectic alloy fluid, adjacent area is respectively the liquid level of 1 unit at a distance of 1 unit, and
Generated resistance when two liquid level relative moving speeds are 1 unit, the dynamic viscosity of the lead bismuth eutectic alloy fluid with
Relationship between reactor exchange capability of heat is：Dynamic viscosity increases, and the shearing force of near wall increases so that and boundary layer expands,
Surface film thermal conductance reduces.
In the present invention, the dynamic viscosity numerical value of the lead bismuth eutectic alloy fluid is equal to 2.5 times of lead bismuth eutectic alloy stream
The sum of phase volume fraction of particulate matter and 1 in body, multiplied by with the dynamic viscosity of pure lead bismuth eutectic alloy fluid, wherein pure lead bismuth
The dynamic viscosity of eutectic alloy fluid is equal to using natural constant e as the truth of a matter, the temperature of constant three divided by pure lead bismuth eutectic alloy fluid
The quotient of degree is the product of the numerical value and constant four of index, and the constant three is preferably 760.1, the constant four preferably 4.94 ×
10-4.Above-mentioned constant three and constant four are all not unique, can be made the appropriate adjustments according to the difference of fitting form, in the present invention
The numerical value provided is most preferred numerical value.
In one preferred embodiment, the dynamic viscosity in the lead bismuth eutectic alloy physical properties of fluids parameter calculates public
Formula such as following formula (five)：
η=ηLBE(1+2.5αP) formula (five)
Wherein,
ηLBECalculation formula such as following formula (six)：
In above-mentioned formula (five) to formula (six),
η indicates the dynamic viscosity (Pas) of lead bismuth eutectic alloy fluid,
ηLBEIndicate the dynamic viscosity (Pas) of pure lead bismuth eutectic alloy fluid,
T indicates the temperature (K) of pure lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
Thermal conductivity, also known as " thermal coefficient " refer to taking two 1 units apart perpendicular to heat conduction direction in interior of articles,
Area is the parallel plane of 1 unit, if 1 unit of the temperature difference of two planes, from a plane within the unit interval
It conducts to the heat of another plane, the heat conductivity value of substance is affected by temperature, increases with temperature and have increased slightly, if substance is each
When temperature difference is not very big between portion, a constant can be considered to entire substance in practical, when crystal cools down, its thermal conductivity increases
It is exceedingly fast；In the present invention, the thermal conductivity of the lead bismuth eutectic alloy fluid refers to two in internal fluid on heat conduction direction
The temperature difference and area are the parallel plane of 1 unit, when at a distance of 1 unit, from a planar conductive to another within the unit interval
The heat of one plane, the thermal conductivity and the relationship between reactor exchange capability of heat of the lead bismuth eutectic alloy fluid are：It leads
Hot coefficient increases, and the heat transfer of wall surface can pass to rapidly peripheral fluid to the heat of fluid, is taken away by fluid flowing,
The temperature difference of near wall is maintained to be in larger value, to make exchange capability of heat enhance.
In the present invention, the thermal conductivity rate score of the lead bismuth eutectic alloy fluid is equal to the heat flow of lead bismuth eutectic alloy fluid
Divided by thickness of the fluid infinitesimal along the fluid infinitesimal in the heat transfer area of lead bismuth eutectic alloy fluid and lead bismuth eutectic alloy fluid
The quotient that the product of the rate of temperature change in direction obtains, wherein the heat flow of lead bismuth eutectic alloy fluid is equal to pure lead bismuth eutectic alloy
The sum of the heat flow of the heat flow of fluid and particulate matter in lead bismuth eutectic alloy fluid；The thermal conductivity of the lead bismuth eutectic alloy fluid
Rate score is also equal to the thermal conductivity of pure lead bismuth eutectic alloy fluid and in the product of its heat transfer area and lead bismuth eutectic alloy fluid
The product of thermal conductivity and its heat transfer area of grain object and, again divided by lead bismuth eutectic alloy fluid by the above-mentioned numerical value being calculated
Heat transfer area；The thermal conductivity rate score of the lead bismuth eutectic alloy fluid is also equal to 1 and subtracts particulate matter in lead bismuth eutectic alloy fluid
The difference of phase volume fraction be multiplied by the thermal conductivity of pure lead bismuth eutectic alloy fluid, the above-mentioned numerical value being calculated is added into lead bismuth
The product of the thermal conductivity of particulate matter and its phase volume fraction in eutectic alloy fluid, wherein the pure lead bismuth eutectic alloy fluid
The numerical value of thermal conductivity is equal to the temperature multiplication by constants five of pure lead bismuth eutectic alloy fluid, institute's value additive constant six again；It is described normal
Number five is preferably 1.018 × 10-2, the constant six is preferably 6.854；Above-mentioned constant five and constant six be all it is not unique, can
Difference in the form of according to fitting makes the appropriate adjustments, and the numerical value provided in the present invention is most preferred numerical value.
In one preferred embodiment, the thermal conductivity calculation formula in the lead bismuth eutectic alloy physical properties of fluids parameter
Such as following formula (seven)：
Wherein,
λLBECalculation formula such as following formula (eight)：
λLBE=6.854+1.018 × 10-2T formulas (eight)
In above-mentioned formula (seven) to formula (eight),
λLBEIndicate the thermal conductivity [W/ (mK)] of pure lead bismuth eutectic alloy fluid,
λpIndicate the thermal conductivity [W/ (mK)] of particulate matter in lead bismuth eutectic alloy fluid,
Q indicates the heat flow (W) of lead bismuth eutectic alloy fluid,
QLBEIndicate the heat flow (W) of pure lead bismuth eutectic alloy fluid,
QpIndicate the heat flow of particulate matter in lead bismuth eutectic alloy fluid,
T indicates the temperature (K) of pure lead bismuth eutectic alloy fluid,
A indicates the heat transfer area (m of lead bismuth eutectic alloy fluid2),
ALBEIndicate the heat transfer area (m of pure lead bismuth eutectic alloy fluid2),
ApIndicate the heat transfer area of particulate matter in lead bismuth eutectic alloy fluid,
Indicate lead bismuth eutectic alloy fluid in, fluid infinitesimal along the thickness direction of the fluid infinitesimal rate of temperature change,
Wherein, dt indicates that the temperature difference of fluid infinitesimal both side surface in lead bismuth eutectic alloy fluid, dx indicate lead bismuth eutectic alloy fluid
The thickness of middle fluid infinitesimal,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
Specific heat capacity refers to that unit mass object changes the interior energy for absorbing or discharging when unit temperature, indicates object heat absorption or dissipates
The ability of heat, in of the invention, the specific heat capacity of the lead bismuth eutectic alloy fluid refers to the lead bismuth eutectic alloy fluid of unit mass
The heat for absorbing or discharging when unit temperature is raised and lowered, varying with temperature can also change, and the lead bismuth eutectic closes
Relationship between the specific heat capacity and reactor exchange capability of heat of golden fluid is：When specific heat capacity indicates that unit mass fluid temperature (F.T.) increases 1K
The energy needed, specific heat capacity is big, then the ability of fluid carrying energy is stronger, can ensure that fluid temperature (F.T.) is relatively low, heat exchange system
Number increases, the enhancing of fluid heat transfer ability.
In the present invention, the specific heat capacity numerical value of the lead bismuth eutectic alloy fluid is equal to the heat flow of lead bismuth eutectic alloy fluid
Divided by the quotient that the product of the temperature variation of lead bismuth eutectic alloy fluid and its quality obtains；The ratio of the lead bismuth eutectic alloy fluid
Thermal capacitance numerical value is also equal in the specific heat capacity quality of pure lead bismuth eutectic alloy fluid and the product leading bismuth eutectic alloy fluid of its quality
The specific heat capacity of particulate matter and the product of its quality, again divided by the obtained number of the quality of lead bismuth eutectic alloy fluid by above-mentioned result of calculation
Value；The specific heat capacity numerical value of the lead bismuth eutectic alloy fluid is also equal to the 1 phase matter for subtracting particulate matter in lead bismuth eutectic alloy fluid
The difference of amount percentage is multiplied by the specific heat capacity of pure lead bismuth eutectic alloy fluid, and the above-mentioned numerical value being calculated is added lead bismuth eutectic
The product of the specific heat capacity of particulate matter and its phase mass percent in alloy fluid.Wherein, the specific heat capacity of pure lead bismuth eutectic alloy fluid
The numerical value obtained by above-mentioned calculating is subtracted equal to the temperature multiplication by constants seven of pure lead bismuth eutectic alloy fluid, then with constant eight；It is described
Constant seven is preferably 2.0302 × 10-2, the constant eight is preferably 159, above-mentioned constant seven and constant eight be all it is not unique, can
Difference in the form of according to fitting makes the appropriate adjustments, and the numerical value provided in the present invention is most preferred numerical value；The lead bismuth eutectic
The phase mass percent of particulate matter is equal to the phase average density and its phase of particulate matter in lead bismuth eutectic alloy fluid in alloy fluid
The product of volume fraction divided by numerical value undetermined two, the phase average of the second-class particulate matter in lead bismuth eutectic alloy fluid of the numerical value undetermined
The difference that density subtracts the density of pure lead bismuth eutectic alloy fluid is multiplied by the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid,
Along with the density of pure lead bismuth eutectic alloy fluid.
Specific heat capacity calculation formula in the lead bismuth eutectic alloy physical properties of fluids parameter in one preferred embodiment
Such as following formula (nine)：
Wherein,
cLBECalculation formula such as following formula (ten)：
cLBE=159.0-2.0302 × 10-2T formulas (ten)
CM,pCalculation formula such as following formula (11)：
In above-mentioned formula (nine) to formula (11),
C indicates the specific heat capacity of lead bismuth eutectic alloy fluid,
cLBEIndicate the specific heat capacity [J/ (kgK)] of pure lead bismuth eutectic alloy fluid,
cpIndicate the specific heat capacity of particulate matter in lead bismuth eutectic alloy fluid,
Q indicates the heat flow of lead bismuth eutectic alloy fluid,
CM,pIndicate the phase mass percent of particulate matter in lead bismuth eutectic alloy fluid,
T indicates the temperature (K) of pure lead bismuth eutectic alloy fluid,
Δ T indicates the temperature variation of lead bismuth eutectic alloy fluid,
M indicates the quality (kg) of lead bismuth eutectic alloy fluid,
MLBEIndicate the quality (kg) of pure lead bismuth eutectic alloy fluid,
MpIndicate the quality of particulate matter in lead bismuth eutectic alloy fluid,
ρLBEIndicate the density (kg/m of pure lead bismuth eutectic alloy fluid3),
ρpIndicate the phase average density (kg/m of particulate matter in lead bismuth eutectic alloy fluid3),
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
The coefficient of cubical expansion refers to the variation of volume and its body at 0 DEG C when object temperature changes a unit
The ratio between product, in of the invention, the coefficient of cubical expansion of the lead bismuth eutectic alloy fluid refers to change rate of the volume with temperature,
Value is bigger, and volume increases faster when temperature increases, in the case where entrance situation is certain, the bigger fluid of the coefficient of cubical expansion
Flow velocity is faster, and more conducively channel self-energy is taken out of, reinforces exchange capability of heat.
In the present invention, the numerical value of the coefficient of cubical expansion of the lead bismuth eutectic alloy fluid is equal to -1 divided by numerical value undetermined three
Multiplied by with numerical value four undetermined, the third phase volume fraction for subtracting particulate matter in lead bismuth eutectic alloy fluid in 1 of the numerical value undetermined
The numerical value that is multiplied with the density of pure lead bismuth eutectic alloy fluid of difference add particulate matter in lead bismuth eutectic alloy fluid
The product of phase average density and its phase volume fraction；The numerical value undetermined four subtracts particulate matter in lead bismuth eutectic alloy fluid equal to 1
Phase volume fraction difference and the change rate of the density with temperature of pure lead bismuth eutectic alloy fluid product, along with lead bismuth eutectic closes
The variation of the phase volume fraction of particulate matter and the phase average density with temperature of particulate matter in lead bismuth eutectic alloy fluid in golden fluid
The product of rate；Wherein, the numerical value of the coefficient of cubical expansion of the pure lead bismuth eutectic alloy fluid is equal in the case where pressure is constant,
The density of pure lead bismuth eutectic alloy fluid to the density reciprocal multiplication of the partial derivative of its temperature and pure lead bismuth eutectic alloy fluid again
Seek opposite number；The numerical value of the coefficient of cubical expansion of the pure lead bismuth eutectic alloy fluid is also equal to pure lead bismuth eutectic alloy fluid
The opposite number of the change rate of density with temperature and the reciprocal multiplication institute value of pure lead bismuth eutectic alloy fluid density.
In one preferred embodiment, the coefficient of cubical expansion meter in the lead bismuth eutectic alloy physical properties of fluids parameter
Calculate formula such as following formula (12)：
Wherein,
αLBECalculation formula such as following formula (13)：
In above-mentioned formula (12) to formula (13),
αvIndicate the coefficient of cubical expansion of lead bismuth eutectic alloy fluid,
αLBEIndicate the coefficient of cubical expansion of pure lead bismuth eutectic alloy fluid,
T indicates the temperature (K) of pure lead bismuth eutectic alloy fluid,
ρLBEIndicate the density (kg/m of pure lead bismuth eutectic alloy fluid3)；
ρpIndicate the phase average density (kg/m of particulate matter in lead bismuth eutectic alloy fluid3),
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid,
Indicate the change rate of the density with temperature of pure lead bismuth eutectic alloy fluid,
Indicate the change rate of the phase average density with temperature of particulate matter in lead bismuth eutectic alloy fluid.
The present invention also provides a kind of simulation systems, and in one preferred embodiment, which includes for depositing
Storage formula (one) is to the computing module of formula (13) calculation formula, and the simulation system is for simulating measuring and calculating lead bismuth eutectic alloy
Physical properties of fluids parameter, used measuring method is as described above, which includes for measuring lead bismuth eutectic alloy
The phase volume fraction α of particulate matter in fluidpAlso include basis with the measuring cell of the temperature T of pure lead bismuth eutectic alloy fluid
The density information that empirical equation determines, wherein include can realize real-time, continuously calculating lead bismuth eutectic alloy in computing module
The program of physical properties of fluids parameter, the simulation system within the unit interval to the density of lead bismuth eutectic alloy fluid, dynamic viscosity,
Thermal conductivity, specific heat capacity and the coefficient of cubical expansion are repeatedly calculated, and are exported after weighted average；Due to considering lead bismuth eutectic alloy
On the one hand the physical parameter of various particulate matters in fluid, the simulation system substantially increase each physical property in lead bismuth eutectic alloy fluid
The measuring and calculating accuracy rate of parameter further makes the maximum cladding temperature and output thermal power of the reactor of design, simulation, more meets reality
Border operating mode, to increase the safety of reactor；On the other hand, a theoretical foundation is provided for the design of reactor, avoided
The experiments of a large amount of blindnesses further shortens reactor appearance to substantially increase the efficiency and accuracy rate of reactor design
The development cycle of device, meanwhile, reduce the development cost of reactor vessel；In addition, the simulation system can either calculate pure lead
The physical parameter of bismuth eutectic alloy fluid can also calculate the particulate matter containing multiple types under various operating modes continuously, in real time
Lead bismuth eutectic alloy physical properties of fluids parameter, can simulate the reactor of various operating modes, be advantageously implemented industrialization in real time.
Maximum cladding temperature of the present invention refers to the involucrum of a prominent flow channel inside fuel assembly
Maximum temperature.
Output thermal power of the present invention is to pass to the heat of fluid in the unit interval by involucrum.
In one preferred embodiment, the simulation system course of work provided by the invention is as follows：
Each physical parameter of lead bismuth eutectic alloy fluid and wherein particulate matter is measured by simulation system first, is obtained
To real-time lead bismuth eutectic alloy fluid and the physical parameter of wherein particulate matter, the lead bismuth eutectic that will be obtained on this basis
Each physical parameter of alloy fluid and wherein particulate matter, which is input in the memory module of simulation system, to be calculated, and tool is finally obtained
The physical parameter of lead bismuth eutectic alloy fluid when the considerations of body a plurality of types of particulate matters.
In another preferred embodiment, the simulation system course of work provided by the invention is as follows：
The running parameter of lead bismuth eutectic alloy fluid is determined according to the output thermal power and other parameters of reactor first, and
Rule of thumb formula or data obtain each physical parameter of lead bismuth eutectic alloy fluid and wherein particulate matter, then by the lead
Each physical parameter of bismuth eutectic alloy fluid and wherein particulate matter is input in simulation system and is calculated, and finally obtains specific
The considerations of a plurality of types of particulate matters when lead bismuth eutectic alloy fluid physical parameter.
Embodiment
The present invention is further described below by way of specific example.
Embodiment 1
Hot Calculation of Physical Properties method provided by the invention is input in the simulation system of nuclear reactor, i.e., is provided in the present invention
Simulation system, the reactor of simulation system simulation South Korea HYPER models is used in combination；Specifically:Using provided by the invention
It is 8m that simulation system, which calculates flow velocity,3The density of the bismuth eutectic alloy fluid of lead containing particulate matter of/h, dynamic viscosity, thermal conductivity, specific heat
Appearance and the coefficient of cubical expansion, before simulation, the initial value for setting lead bismuth eutectic alloy fluid and particulate matter physical parameter is as follows：ρLBE
=11096, ρp=8030, T=773, αLBE=0.99, αp=0.01, ηLBE=0.0013, λLBE=3.16, λp=
104.514cLBE=159, cp=450, Tc=4890；According to the result of calculation of above-mentioned each parameter, the highest involucrum of reactor is designed
Temperature and output thermal power, the numerical value according to the reactor maximum cladding temperature of the above results design, output thermal power are respectively
460K、96KW。
In order to verify the accuracy of simulator provided by the invention, the reactor of same model is actually had chosen, in phase
It works in the case of same initial parameter, measures the reactor highest involucrum of the above-mentioned bismuth of lead containing particulate matter eutectic alloy fluid in real time
Temperature, output thermal power, the measured value measured is respectively 480K, 100KW.
The data that are obtained by comparing actually measured data and according to systematic simulation calculation provided by the invention it is found that this
The simulation system that invention provides simulates the error very little between calculated data and actual value, and control errors are within 4.2%.
Comparative example
Comparative example 1
The technological system similar with simulation system provided by the invention is chosen, difference lies in the systems to calculate reactor most
The influence of particulate matter is not considered when high clad temperature, output thermal power, Computing Principle and calculating step are consistent, at the beginning of reactor
Beginning parameter be also it is identical, specifically:When simulating the reactor of South Korea's HYPER models, the stream of lead bismuth eutectic alloy fluid
Speed is 8m3/ h, before simulation, the initial value for setting lead bismuth eutectic alloy fluid and particulate matter physical parameter is as follows：T=773, Tc=
4890, according to above-mentioned each parameter, the maximum cladding temperature of simulating the reactor being calculated, the numerical value for exporting thermal power are respectively
445K、92KW。
By comparing the data obtained in comparative example 1 with actually measured data it is found that the case where not considering particulate matter
Under error between the data being calculated and actual value it is very big, error reaches within 8%.
It is found by the above results：The measuring method of lead bismuth eutectic alloy physical properties of fluids parameter provided by the invention is total to lead bismuth
The measurement result of peritectic alloy physical properties of fluids parameter more tallies with the actual situation, and greatly reduces reactor maximum cladding temperature, output
The design error of thermal power, and then ensure that the safe handling of reactor.
In the present invention, it is in this field to calculate reactor maximum cladding temperature, the formula for exporting thermal power and computational methods
Conventional algorithm does not illustrate that specific algorithm may refer to publishing house of Shanghai Communications University herein, in works such as safeties《Core
Reactor Thermal Analysis》3rd chapter is recorded thereon about the computational methods for calculating fuel can hot face temperature, is most terminated
Obtaining for fruit is realized by related programming.
According to the measuring method of lead bismuth eutectic alloy physical properties of fluids parameter provided by the invention, have the advantages that：
(1) measuring method of lead bismuth eutectic alloy physical properties of fluids parameter provided by the invention, which improves, calculates the conjunction of lead bismuth eutectic
The accuracy of golden physical properties of fluids parameter；
(2) measuring method of lead bismuth eutectic alloy physical properties of fluids parameter provided by the invention can calculate continuously, in real time
The physical parameter of the lead bismuth eutectic alloy fluid of the particulate matter containing multiple types under various operating modes.
In the description of the present invention, it should be noted that term " one " to " 13 " is used for description purposes only, and cannot be managed
Solution is instruction or implies relative importance.
It is described the invention in detail above in association with detailed description and exemplary example, but these explanations are simultaneously
It is not considered as limiting the invention.It will be appreciated by those skilled in the art that without departing from the spirit and scope of the invention,
Can be with various equivalent substitutions, modifications or improvements are made to the technical scheme of the invention and its embodiments, these each fall within the present invention
In the range of.Scope of protection of the present invention is subject to the appended claims.
Claims (7)
1. a kind of measuring method of lead bismuth eutectic alloy physical properties of fluids parameter, which is characterized in that the measuring method includes following step
Suddenly：
(I) physical parameter of particulate matter in lead bismuth eutectic alloy fluid is measured；
(II) lead bismuth eutectic alloy is calculated according to the physical parameter of particulate matter in the lead bismuth eutectic alloy fluid measured in step (I)
Physical properties of fluids parameter；
The lead bismuth eutectic alloy physical properties of fluids parameter includes the density of lead bismuth eutectic alloy fluid, dynamic viscosity, thermal conductivity, ratio
Thermal capacitance and the coefficient of cubical expansion,
Dynamic viscosity in the lead bismuth eutectic alloy physical properties of fluids parameter calculates formula such as following formula (five)：
η=ηLBE(1+2.5αP) formula (five)
Wherein,
ηLBECalculation formula such as following formula (six)：
In above-mentioned formula (five) to formula (six),
η indicates the dynamic viscosity of lead bismuth eutectic alloy fluid,
ηLBEIndicate the dynamic viscosity of pure lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
2. the measuring method of lead bismuth eutectic alloy physical properties of fluids parameter according to claim 1, which is characterized in that described
Grain object includes that impurity in lead bismuth eutectic alloy fluid and the impurity are respectively acting on reactor with lead bismuth eutectic alloy fluid
Material and other substances generated.
3. the measuring method of lead bismuth eutectic alloy physical properties of fluids parameter according to claim 1, which is characterized in that the lead
Density calculation formula such as following formula (one) in bismuth eutectic alloy physical properties of fluids parameter：
Wherein,
ρLBECalculation formula such as following formula (two)：
ρLBE=10529 × [1-1.07978 × 10-4× (T-398.15)] formula (two)
ρpCalculation formula such as following formula (three)：
αpCalculation formula such as following formula (four)：
In above-mentioned formula (one) to formula (four),
ρ indicates the density of lead bismuth eutectic alloy fluid,
ρLBEIndicate the density of pure lead bismuth eutectic alloy fluid,
ρpIndicate the phase average density of particulate matter in lead bismuth eutectic alloy fluid,
ρiIndicate the density of each particulate matter in lead bismuth eutectic alloy fluid,
M indicates the quality of lead bismuth eutectic alloy fluid,
T indicates that the temperature of pure lead bismuth eutectic alloy fluid, V indicate the volume of lead bismuth eutectic alloy fluid,
VLBEIndicate the volume of pure lead bismuth eutectic alloy fluid,
VpIndicate the volume of particulate matter in lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid,
αiIndicate the volume fraction of each particulate matter in lead bismuth eutectic alloy fluid.
4. the measuring method of lead bismuth eutectic alloy physical properties of fluids parameter according to claim 1, which is characterized in that the lead
Thermal conductivity calculation formula such as following formula (seven) in bismuth eutectic alloy physical properties of fluids parameter：
Wherein,
λLBECalculation formula such as following formula (eight)：
λLBE=6.854+1.018 × 10-2T formulas (eight)
In above-mentioned formula (seven) to formula (eight),
λ indicates the thermal conductivity of lead bismuth eutectic alloy fluid,
λLBEIndicate the thermal conductivity of pure lead bismuth eutectic alloy fluid,
λpIndicate the thermal conductivity of particulate matter in lead bismuth eutectic alloy fluid,
Q indicates the heat flow of lead bismuth eutectic alloy fluid,
QLBEIndicate the heat flow of pure lead bismuth eutectic alloy fluid,
QpIndicate the heat flow of particulate matter in lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
A indicates the heat transfer area of lead bismuth eutectic alloy fluid,
ALBEIndicate the heat transfer area of pure lead bismuth eutectic alloy fluid,
ApIndicate the heat transfer area of particulate matter in lead bismuth eutectic alloy fluid,
It indicates in lead bismuth eutectic alloy fluid, rate of temperature change of the fluid infinitesimal along the thickness direction of the fluid infinitesimal, wherein
Dt indicates that the temperature difference of fluid infinitesimal both side surface in lead bismuth eutectic alloy fluid, dx indicate fluid in lead bismuth eutectic alloy fluid
The thickness of infinitesimal,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
5. the measuring method of lead bismuth eutectic alloy physical properties of fluids parameter according to claim 1, which is characterized in that the lead
Specific heat capacity calculation formula such as following formula (nine) in bismuth eutectic alloy physical properties of fluids parameter：
Wherein,
cLBECalculation formula such as following formula (ten)：
cLBE=159.0-2.0302 × 10-2T formulas (ten)
CM,pCalculation formula such as following formula (11)：
In above-mentioned formula (nine) to formula (11),
C indicates the specific heat capacity of lead bismuth eutectic alloy fluid,
cLBEIndicate the specific heat capacity of pure lead bismuth eutectic alloy fluid,
cpIndicate the specific heat capacity of particulate matter in lead bismuth eutectic alloy fluid,
Q indicates the heat flow of lead bismuth eutectic alloy fluid,
CM,pIndicate the phase mass percent of particulate matter in lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
Δ T indicates the temperature variation of lead bismuth eutectic alloy fluid,
M indicates the quality of lead bismuth eutectic alloy fluid,
MLBEIndicate the quality of pure lead bismuth eutectic alloy fluid,
MpIndicate the quality of particulate matter in lead bismuth eutectic alloy fluid,
ρLBEIndicate the density of pure lead bismuth eutectic alloy fluid,
ρpIndicate the phase average density of particulate matter in lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid.
6. the measuring method of lead bismuth eutectic alloy physical properties of fluids parameter according to claim 1, which is characterized in that the lead
Coefficient of cubical expansion calculation formula such as following formula (12) in bismuth eutectic alloy physical properties of fluids parameter：
In above-mentioned formula (12),
αvIndicate the coefficient of cubical expansion of lead bismuth eutectic alloy fluid,
T indicates the temperature of pure lead bismuth eutectic alloy fluid,
ρLBEIndicate the density of pure lead bismuth eutectic alloy fluid；
ρpIndicate the phase average density of particulate matter in lead bismuth eutectic alloy fluid,
αpIndicate the phase volume fraction of particulate matter in lead bismuth eutectic alloy fluid,
Indicate the change rate of the density with temperature of pure lead bismuth eutectic alloy fluid,
Indicate the change rate of the phase average density with temperature of particulate matter in lead bismuth eutectic alloy fluid.
7. a kind of simulation system, which is characterized in that the simulation system includes for storing such as one of claim 1-6 Chinese style (one)
To the computing module of formula (12) calculation formula, the simulation system is for simulating measuring and calculating lead bismuth eutectic alloy physical properties of fluids
Parameter, used measuring method is as described in one of claim 1-6.
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| JP4143737B2 (en) * | 2004-07-15 | 2008-09-03 | 株式会社アライドマテリアル | Powder for measuring flow velocity of lead bismuth melt, ultrasonic flow velocity measurement method using this, and spallation neutron source liquid target system |
| CN103000238A (en) * | 2012-11-28 | 2013-03-27 | 华北电力大学 | System for removing particles in lead bismuth alloy |
| CN103531257A (en) * | 2013-09-12 | 2014-01-22 | 华北电力大学 | Primary circuit coolant pipeline for preventing deposition of particulate matters in liquid-state lead bismuth alloy |
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| JP4143737B2 (en) * | 2004-07-15 | 2008-09-03 | 株式会社アライドマテリアル | Powder for measuring flow velocity of lead bismuth melt, ultrasonic flow velocity measurement method using this, and spallation neutron source liquid target system |
| CN103000238A (en) * | 2012-11-28 | 2013-03-27 | 华北电力大学 | System for removing particles in lead bismuth alloy |
| CN103531257A (en) * | 2013-09-12 | 2014-01-22 | 华北电力大学 | Primary circuit coolant pipeline for preventing deposition of particulate matters in liquid-state lead bismuth alloy |
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