CN108776099A - Simultaneously measure capillary pressure, permeability and capillary performance parameter method and device - Google Patents
Simultaneously measure capillary pressure, permeability and capillary performance parameter method and device Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000035699 permeability Effects 0.000 title claims abstract description 54
- 239000007788 liquid Substances 0.000 claims abstract description 115
- 239000000126 substance Substances 0.000 claims abstract description 86
- 230000008569 process Effects 0.000 claims abstract description 27
- 238000009736 wetting Methods 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000012153 distilled water Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 230000000704 physical effect Effects 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002086 nanomaterial Substances 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 235000019441 ethanol Nutrition 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 claims description 3
- 238000001931 thermography Methods 0.000 claims description 3
- 229920000620 organic polymer Polymers 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 17
- 239000010949 copper Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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Abstract
The disclosure provide it is a kind of and meanwhile measure capillary pressure, permeability and capillary performance parameter method and device, which includes：Liquid storage module, fixed module, moistening height acquisition module and computing module, liquid storage module is for holding liquid working substance；Fixed module makes the bottom end of testee submerge the liquid level of liquid working substance or less for fixing testee；For obtaining liquid working substance, the corresponding moistening height of different time, computing module are used to calculate capillary pressure, permeability and the capillary performance parameter of testee to moistening height acquisition module in capillary elevation process in testee.Capillary pressure is measured while the disclosure provides, the method and device of permeability and capillary performance have it is simple and direct, convenient, the advantages such as easily realize, be inexpensive, can expand on a large scale, it can quickly, easily realize the overall merit of the capillary performance of open microchannel base capillary structure, there is important scientific value and engineer application meaning.
Description
Technical field
This disclosure relates to microfluid management and phase-change heat transfer technical field, more particularly to it is a kind of measure simultaneously capillary pressure,
The method and device of permeability and capillary performance parameter.
Background technology
The liquid of capillary pressure driving flows gentle liquid phase transition phenomena and is prevalent in nature and industrial process, is being permitted
Very important effect is shown in applying, for example seawater desalination and fresh water purifying, microfluid management, efficient caloic pass more
It passs, especially high power density electronic device cooling.The two-phase Thermal Conduction Equipment of passive type such as heat pipe, capillary slot evaporator, steams
Vapour chamber etc. can effectively solve the heat management bottleneck problem for restricting current electronics industry development, and the component with capillary structure is this
The core component of a little devices, capillary performance determine that the maximum of two-phase Thermal Conduction Equipment takes thermal energy power.In evaluation capillary structure
When capillary performance, capillary pressure Δ PcapIt is two most important independent parameters with permeability K, capillary pressure reflects driving liquid
The power size that body flows in capillary structure, it is big that permeability reflects the resistance being subject to when liquid flows in capillary structure
It is small, capillary performance parameter S1It can be expressed as the product of the two, i.e. S1=K Δs Pcap。
There are mainly two types of capillary structures at present, and one is the porous capillary structures that traditional sintering metal powder is formed, separately
Also include the base that micrometer structure or nanostructure are modified to microchannel surface and formed one is open microchannel capillary structure
Composite construction in open microchannel may be collectively referred to as open microchannel base capillary structure.Usually calculating capillary structure
Capillary performance parameter when, other than measuring other parameters, it is also necessary to know the permeability of capillary structure.For sintering metal
Powder porous capillary structure can use its permeability of Blake-Kozeny equation calculations.
However during realizing the disclosure, present inventor has found, for open microchannel base capillary structure,
Usually using forcing liquid flow method to measure permeability, the critical piece that the experimental provision of this method is related to has gas cylinder, mistake
Filter, the cistern for including heater, sealing test chamber, inlet and outlet pipe lines, pressure sensor, precision balance etc., test device
It is complex with flow, it takes more.Lack a kind of capillary pressure that can measure open microchannel base capillary structure simultaneously, ooze
The method and device of saturating rate and capillary performance parameter.
Disclosure
(1) technical problems to be solved
Based on above-mentioned technical problem, the disclosure provides a kind of while measuring capillary pressure, permeability and capillary performance parameter
Method and device, with alleviate lack a kind of capillary pressure that can measure open microchannel base capillary structure simultaneously in the prior art
The technical issues of method and device of power, permeability and capillary performance parameter.
(2) technical solution
According to one aspect of the disclosure, it provides a kind of while measuring capillary pressure, permeability and capillary performance parameter
Method, including：
Step A：The geometric dimension for obtaining testee, calculates the porosity of testee；
Step B：Fixed testee, makes the bottom end of testee submerge the liquid level of liquid working substance or less；
Step C：Liquid working substance corresponding moistening height of different time in capillary elevation process in testee is obtained, is obtained
To wetting speed；
Step D：According to the physical-property parameter of liquid working substance, the porosity of testee and liquid working substance in testee
The corresponding moistening height of interior different time, wetting speed calculate capillary pressure, permeability and the capillary performance of the testee
Parameter.
In some embodiments of the present disclosure, in the step A：If testee is open microchannel base capillary knot
Structure is calculate by the following formula the porosity ε of testee：
Wherein, A1It is accumulated for microchannel cross-section in open microchannel base capillary structure, A2For the cross-sectional area of fin.
In some embodiments of the present disclosure, the step D includes：
Step D1：It is calculate by the following formula the capillary pressure Δ P of the testeecap：
ΔPcap=ρ gheq
Wherein, ρ is the density of liquid working substance, and g is acceleration of gravity, heqThe capillary rise in testee for liquid working substance
Final balance height in the process；
Step D2：Calculate the first capillary performance parameter S of testee1, including：
Step D2a：If not considering the gravitational effect at liquid working substance capillary rise initial stage：It is calculate by the following formula the measured object
First capillary performance parameter S of body1：
Step D2b：If considering the gravitational effect at liquid working substance capillary rise initial stage：It is calculate by the following formula the testee
The first capillary performance parameter S1：
Wherein, v=dh/dt is the wetting speed of liquid working substance, and ε is the porosity of testee, and μ is the glutinous of liquid working substance
Degree, h are the moistening height of t moment liquid working substance, and K is the permeability of testee；
Step D3：The permeability K of testee is calculated using following formula：
K=S1/ΔPcap
Step D4：It is calculate by the following formula the second capillary performance parameter S of the testee2：
S2=S1/2σ
Wherein, σ is the surface tension of liquid working substance.
In some embodiments of the present disclosure, wherein：In the step D2a：By multiple h2It is fitted to obtain with the data point of t
Square h of liquid working substance moistening height in capillary elevation process in testee2At any time t variation function relation curve and
Slope of curve k1, utilize the porosity ε of testee, the viscosity μ and slope k of liquid working substance1The capillary of testee is calculated
Performance parameterIn the step D2b：It is obtained according to the data point of the corresponding moistening height h of multiple and different time t
The data point of multiple wetting speed v, then be fitted the data point of multiple v and 1/h and obtain liquid working substance capillary liter in testee
Wetting speed v is with the moistening height inverse 1/h function relation curves changed and slope of curve k during height2, utilize testee
Porosity ε, liquid working substance viscosity μ and slope k2The capillary performance parameter S of testee is calculated1=K2εμ。
According to another aspect of the disclosure, it also provides a kind of while measuring capillary pressure, permeability and capillary performance ginseng
Several devices, capillary pressure, permeability and capillary performance parameter for measuring measured object simultaneously, including：Liquid storage module, is used for
Hold liquid working substance；Fixed module for fixing testee, and makes the bottom end of the testee submerge the liquid working substance
Liquid level below；Moistening height acquisition module, for obtain liquid working substance it is different in capillary elevation process in testee when
Between corresponding moistening height；And computing module, it is electrically connected with the moistening height acquisition module, and execute following operation：Step
Rapid A：According to the geometric dimension of testee, the porosity of testee is calculated；Step B：According to liquid working substance in testee
The corresponding moistening height of different time, obtains wetting speed in interior capillary elevation process；Step C：According to the physics of liquid working substance
Nature parameters, the porosity of testee and the corresponding moistening height of liquid working substance different time in testee, wetting speed
Degree calculates capillary pressure, permeability and the capillary performance parameter of the testee.
In some embodiments of the present disclosure, the testee is open microchannel base capillary structure, including opening
Decline multi-channel capillary structure and micrometer structure or nanostructure are modified to microchannel surface and formed based on open microchannel
Composite construction.
In some embodiments of the present disclosure, wherein：Microchannel is transversal in the open microchannel base capillary structure
Face is rectangle, trapezoidal, triangle or arc-shaped；The material of the open microchannel base capillary structure is metal, alloy, partly leads
At least one of body, ceramics, oxide, high-molecular organic material.
In some embodiments of the present disclosure, further include：Measurement module, the dimensioning for measuring the testee
It is very little.
In some embodiments of the present disclosure, the liquid working substance is the liquid of known density ρ, viscosity μ and surface tension σ
Body；Wherein, the liquid working substance is：At least one of distilled water, deionized water, ethyl alcohol, methanol, acetone or refrigerant.
In some embodiments of the present disclosure, the moistening height acquisition module includes：The reference of scale or known dimensions
Object；And Wet Out recorder, the Wet Out recorder are at least one in high-speed camera or infrared thermography
Kind.
(3) advantageous effect
It can be seen from the above technical proposal that measuring capillary pressure, permeability and capillary performance while the disclosure provides
The method and device of parameter has the advantages that：
The disclosure measures capillary pressure, permeability and the capillary performance of open microchannel base capillary structure while offer
Method and device by obtaining liquid working substance corresponding moistening height of different time in capillary elevation process in testee,
It can be according to the physical-property parameter of liquid working substance, the porosity of testee and the liquid working substance different time in testee
Corresponding moistening height, wetting speed substitute into the theoretical formula method that the disclosure provides and obtain the capillary pressure of the testee
Power, permeability and capillary performance parameter.Measurement method and device have simple and direct, convenient, easy realization, low cost, can open up on a large scale
The advantages such as exhibition, can quickly, easily realize the overall merit of the capillary performance of open microchannel base capillary structure, have weight
The scientific value and engineer application meaning wanted.
Description of the drawings
Capillary pressure, the infiltration of open microchannel base capillary structure are measured while Fig. 1 provides for the embodiment of the present disclosure
The step of method of rate and capillary performance, schemes.
Fig. 2 is the sectional schematic diagram of open microchannel base capillary structure in the embodiment of the present disclosure.
When Fig. 3 is that testee is copper microchannel capillary structure, liquid working substance is distilled water in the embodiment of the present disclosure, liquid
The schematic diagram of working medium corresponding moistening height h of different time t in capillary elevation process in testee.
When Fig. 4 is that testee is copper microchannel capillary structure, liquid working substance is distilled water in the embodiment of the present disclosure, liquid
Square h of working medium moistening height in capillary elevation process in testee2The function relation curve signal of t variations at any time
Figure.
When Fig. 5 is that testee is copper microchannel capillary structure, liquid working substance is distilled water in the embodiment of the present disclosure, liquid
Wetting speed v shows working medium with the moistening height inverse 1/h function relation curves changed in capillary elevation process in testee
It is intended to.
Capillary pressure, the infiltration of open microchannel base capillary structure are measured while Fig. 6 provides for the embodiment of the present disclosure
The schematic diagram of the device of rate and capillary performance, wherein partial enlarged view are liquid working substance in open microchannel Ji Maoxijiegourun
The front view of wet situation.
【Embodiment of the present disclosure main element symbol description in attached drawing】
1- testees；
20- liquid storage modules；
21- liquid working substances；
30- fixed modules；
41- scales；
42- Wet Out recorders；
50- computing modules；
60- measurement modules.
Specific implementation mode
The method and device that capillary pressure, permeability and capillary performance parameter are measured while the embodiment of the present disclosure provides is logical
Cross acquisition liquid working substance corresponding moistening height of different time in capillary elevation process in testee, you can according to liquid work
The physical-property parameter of matter, the porosity of testee and the corresponding wetting of liquid working substance different time in testee are high
Degree, wetting speed substitute into theoretical formula method and obtain capillary pressure, permeability and the capillary performance parameter of the testee, have
Have it is simple and direct, convenient, easily realize, low cost, the advantages such as can expand on a large scale, can quickly, easily realize open microchannel
The overall merit of the capillary performance of base capillary structure has important scientific value and engineer application meaning.
To make the purpose, technical scheme and advantage of the disclosure be more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
Capillary pressure, the infiltration of open microchannel base capillary structure are measured while Fig. 1 provides for the embodiment of the present disclosure
The step of method of rate and capillary performance, schemes.
According to one aspect of the disclosure, as shown in Figure 1, provide a kind of while measuring capillary pressure, permeability and capillary
The method of performance parameter, as shown in Figure 1, including：
Step A：The geometric dimension of testee 1 is obtained, the porosity of testee 1 is calculated；
Step B：Fixed testee 1, makes the bottom end of testee 1 submerge the liquid level of liquid working substance 21 or less；
Step C：Obtaining liquid working substance 21, the corresponding wetting of different time is high in capillary elevation process in testee 1
Degree, obtains wetting speed；And
Step D：According to the physical-property parameter of liquid working substance 21, the porosity of testee 1 and liquid working substance 21 in quilt
Survey capillary pressure, permeability and the capillary of the corresponding moistening height of different time in object 1, wetting speed calculating testee 1
Performance parameter.
When practical application, before the geometric dimension for obtaining testee 1, testee 1 need to be cleaned, remove grease
Greasy dirt and impurity.
Fig. 2 is the sectional schematic diagram of open microchannel base capillary structure in the embodiment of the present disclosure, A1It declines for opening logical
Microchannel cross-section accumulates in road base capillary structure, A2For the cross-sectional area of fin.
In some embodiments of the present disclosure, in step A：If testee 1 is open microchannel base capillary structure, lead to
Cross the porosity ε that following formula calculates testee 1：
Wherein, as shown in Fig. 2, A1It is accumulated for microchannel cross-section in open microchannel base capillary structure, A2 is fin
Cross-sectional area.
In some embodiments of the present disclosure, step D includes：
Step D1：It is calculate by the following formula the capillary pressure Δ P of the testeecap：
ΔPcap=ρ gheq
Wherein, ρ is the density of liquid working substance, and g is acceleration of gravity, heqThe capillary rise in testee for liquid working substance
Final balance height in the process；
Step D2：Calculate the first capillary performance parameter S of testee1, including：
Step D2a：If not considering the gravitational effect at liquid working substance capillary rise initial stage：It is calculate by the following formula the measured object
First capillary performance parameter S of body1：
Step D2b：If considering the gravitational effect at liquid working substance capillary rise initial stage：It is calculate by the following formula the testee
The first capillary performance parameter S1：
Wherein, v=dh/dt is the wetting speed of liquid working substance, and ε is the porosity of testee, and μ is the glutinous of liquid working substance
Degree, h are the moistening height of t moment liquid working substance, and K is the permeability of testee；
Step D3：The permeability K of testee is calculated using following formula：
K=S1/ΔPcap
Step D4：It is calculate by the following formula the second capillary performance parameter S of the testee2：
S2=S1/2σ
Wherein, σ is the surface tension of liquid working substance.
In some embodiments of the present disclosure, as shown in figure 3, obtaining the capillary rise in testee 1 of liquid working substance 21
In the process, the data point of multiple moistening height hs corresponding with different time t, wherein：
In step D2a：As shown in figure 4, by multiple h2It is fitted to obtain liquid working substance 21 in testee 1 with the data point of t
Square h of moistening height during capillary rise2The function relation curve and slope of curve k of t variations at any time1, utilize testee 1
Porosity ε, liquid working substance 21 viscosity μ and slope k1The capillary performance parameter of testee is calculated
In step D2b：As shown in figure 5, being obtained according to the data point of the corresponding moistening height h of multiple and different time t multiple
The data point of wetting speed v, then be fitted the data point of multiple v and 1/h and obtain liquid working substance capillary rise in testee
Wetting speed v is with the moistening height inverse 1/h function relation curves changed and slope of curve k in journey2, utilize the hole of testee
The capillary performance parameter S of testee is calculated in gap rate ε, the viscosity μ of liquid working substance and slope k 21=K2εμ。
Capillary pressure, the infiltration of open microchannel base capillary structure are measured while Fig. 6 provides for the embodiment of the present disclosure
The schematic diagram of the device of rate and capillary performance, wherein partial enlarged view are liquid working substance in open microchannel Ji Maoxijiegourun
The front view of wet situation.
According to one aspect of the disclosure, it provides a kind of while measuring capillary pressure, permeability and capillary performance parameter
Device, as shown in fig. 6, including：Liquid storage module 20, for holding liquid working substance 21；Fixed module 30, for fixing testee
1, and the bottom end of testee 1 is made to submerge the liquid level of liquid working substance 21 or less；Moistening height acquisition module, for obtaining liquid work
The corresponding moistening height of different time in capillary elevation process in testee 1 of matter 21；And computing module 50, it is high with wetting
Acquisition module electrical connection is spent, and executes following operation：Step A：According to the geometric dimension of testee, the hole of testee is calculated
Gap rate；Step B：According to liquid working substance in testee the corresponding moistening height of different time in capillary elevation process, obtain
Wetting speed；Step C：According to the physical-property parameter of liquid working substance, the porosity of testee and liquid working substance in measured object
The corresponding moistening height of internal different time, wetting speed calculate capillary pressure, permeability and the capillarity of the testee
Energy parameter, the embodiment of the present disclosure measure capillary pressure, permeability and the hair of open microchannel base capillary structure while offer
The corresponding wetting of different time is high in capillary elevation process in testee by obtaining liquid working substance 21 for the device of thin performance
Degree, you can according to the physical-property parameter (such as density p, viscosity μ and surface tension σ) of liquid working substance 21, the hole of testee 1
Rate and the corresponding moistening height of the different time in testee of liquid working substance 21, wetting speed substitute into the embodiment of the present disclosure and provide
Theoretical formula method obtain capillary pressure, permeability and the capillary performance parameter of testee 1, without additional forced liquid
The device of flowing measures permeability；The measurement method and device have simple and direct, convenient, easy realization, low cost, can open up on a large scale
The advantages such as exhibition, can quickly, easily realize the overall merit of the capillary performance of open microchannel base capillary structure, have weight
The scientific value and engineer application meaning wanted.
In some embodiments of the present disclosure, testee 1 is open microchannel base capillary structure, including：It is open
Microchannel capillary structure and micrometer structure or nanostructure are modified to microchannel surface and formed based on open microchannel
Composite construction.
In some embodiments of the present disclosure, in open microchannel base capillary structure the cross section of microchannel be rectangle,
Trapezoidal, triangle is arc-shaped.
In some embodiments of the present disclosure, the material of open microchannel base capillary structure is metal, alloy, partly leads
At least one of body, ceramics, oxide, high-molecular organic material.
In some embodiments of the present disclosure, this measure simultaneously capillary pressure, permeability and capillary performance parameter device
Further include：Measurement module 60, the geometric dimension for measuring testee 1, and then the porosity of testee 1 is calculated.
In some embodiments of the present disclosure, liquid working substance 21 is the liquid of known density ρ, viscosity μ and surface tension σ；
Wherein, liquid working substance 21 is：At least one of distilled water, deionized water, ethyl alcohol, methanol, acetone or refrigerant.
In some embodiments of the present disclosure, as shown in Figure 1, moistening height acquisition module includes：Scale 41 or known ruler
Very little object of reference；And Wet Out recorder 42, Wet Out recorder 42 are in high-speed camera or infrared thermography
At least one.
Below with a specific embodiment, the verification embodiment of the present disclosure measures capillary pressure, permeability and hair while offer
The validity of the method and device of thin performance parameter：
Testee 1 is copper microchannel capillary structure, and liquid working substance 21 is distilled water.
Step 1：Capillary pressure, permeability and capillary performance parameter dress are provided while offer using the embodiment of the present disclosure
It sets, obtains distilled water in copper microchannel capillary structure in capillary elevation process, the corresponding moistening height of multiple and different time t
The data point of h, as shown in Figure 3.
Step 2a：If the gravitational effect at capillary rise initial stage that do not consider distilled water in copper microchannel capillary structure,
It is fitted multiple h2Distilled water moistening height in capillary elevation process in copper microchannel capillary structure is obtained with the data point of t
Square h2The function relation curve of t variations at any time, as shown in Figure 4, it can be seen that the linearity of curve is fine, with theoretical formula phase
The slope of symbol, linear fit is k1, recycle the porosity ε of copper microchannel capillary structure, the viscosity μ and slope k of distilled water1
The capillary performance parameter of copper microchannel capillary structure is calculated
Step 2b：If the gravitational effect at distilled water capillary rise initial stage in copper microchannel capillary structure is considered, by more
The data point of a moistening height h corresponding with different time t obtains the data point of multiple wetting speed v, is fitted multiple v and 1/h
Data point obtain distilled water in copper microchannel capillary structure in capillary elevation process wetting speed v with moistening height inverse
The function relation curve of 1/h variations, as shown in Figure 5, it can be seen that the linearity of curve is fine, is consistent with theoretical formula, line
Property be fitted to obtain slope k 2, recycle the porosity ε of copper microchannel capillary structure, the viscosity u of distilled water and slope k 2 to calculate
Obtain the capillary performance parameter S of copper microchannel capillary structure1=K Δs Pcap=k2μ=6.52 × 10 ε-7N。
Step 3：By the density p of distilled water, gravity acceleration g and the distilled water capillary in copper microchannel capillary structure
Final balance height h in elevation processeqThe capillary pressure Δ P of copper microchannel capillary structure is calculated in=20.3mmcap
=ρ gheq=198Pa.
Step 4：Pass through capillary performance parameter S1With the capillary pressure Δ P of copper microchannel capillary structurecapIt calculates copper micro-
The permeability K=S of multi-channel capillary structure1/ΔPcap=3.2 × 10-9m2。
According to above description, measurement capillary pressure while those skilled in the art should provide the embodiment of the present disclosure,
The method and device of permeability and capillary performance parameter has clear understanding.
In conclusion the disclosure provide while measure capillary pressure, permeability and capillary performance parameter method and dress
It sets by obtaining liquid working substance corresponding moistening height of different time in capillary elevation process in testee, you can according to liquid
The physical-property parameter of body working medium, the porosity of testee and the corresponding wetting of liquid working substance different time in testee
Highly, wetting speed substitutes into the theoretical formula method that the embodiment of the present disclosure provides and obtains the capillary pressure of testee, permeability
With capillary performance parameter.
It should also be noted that, the direction term mentioned in embodiment, for example, "upper", "lower", "front", "rear", " left side ",
" right side " etc. is only the direction of refer to the attached drawing, not is used for limiting the protection domain of the disclosure.Through attached drawing, identical element by
Same or similar reference numeral indicates.When that understanding of this disclosure may be caused to cause to obscure, conventional structure will be omitted
Or construction.
And the shape and size of each component do not reflect actual size and ratio in figure, and only illustrate the embodiment of the present disclosure
Content.In addition, in the claims, any reference mark between bracket should not be configured to the limit to claim
System.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description of the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：It is i.e. required to protect
The disclosure of shield requires features more more than the feature being expressly recited in each claim.More precisely, such as front
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific implementation mode are expressly incorporated in the specific implementation mode, wherein each claim itself
All as the separate embodiments of the disclosure.
Particular embodiments described above has carried out further in detail the purpose, technical solution and advantageous effect of the disclosure
It describes in detail bright, it should be understood that the foregoing is merely the specific embodiment of the disclosure, is not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
Claims (10)
1. it is a kind of at the same measure capillary pressure, permeability and capillary performance parameter method, including：
Step A：The geometric dimension for obtaining testee, calculates the porosity of testee；
Step B：Fixed testee, makes the bottom end of testee submerge the liquid level of liquid working substance or less；
Step C：Liquid working substance corresponding moistening height of different time in capillary elevation process in testee is obtained, is moistened
Wet speed；
Step D：According to the physical-property parameter of liquid working substance, the porosity of testee and liquid working substance in testee not
Capillary pressure, permeability and the capillary performance parameter of the testee are calculated with time corresponding moistening height, wetting speed.
2. it is according to claim 1 at the same measure capillary pressure, permeability and capillary performance parameter method, the step
In A：If testee is open microchannel base capillary structure, it is calculate by the following formula the porosity ε of testee：
Wherein, A1It is accumulated for microchannel cross-section in open microchannel base capillary structure, A2For the cross-sectional area of fin.
3. it is according to claim 2 at the same measure capillary pressure, permeability and capillary performance parameter method, the step
D includes：
Step D1：It is calculate by the following formula the capillary pressure Δ P of the testeecap：
ΔPcap=ρ gheq
Wherein, ρ is the density of liquid working substance, and g is acceleration of gravity, heqFor liquid working substance in testee capillary elevation process
In final balance height；
Step D2：Calculate the first capillary performance parameter S of testee1, including：
Step D2a：If not considering the gravitational effect at liquid working substance capillary rise initial stage：It is calculate by the following formula the testee
First capillary performance parameter S1：
Step D2b：If considering the gravitational effect at liquid working substance capillary rise initial stage：It is calculate by the following formula the of the testee
One capillary performance parameter S1：
Wherein, v=dh/dt is the wetting speed of liquid working substance, and ε is the porosity of testee, and μ is the viscosity of liquid working substance, h
For the moistening height of t moment liquid working substance, K is the permeability of testee；
Step D3：The permeability K of testee is calculated using following formula：
K=S1/ΔPcap
Step D4：It is calculate by the following formula the second capillary performance parameter S of the testee2：
S2=S1/2σ
Wherein, σ is the surface tension of liquid working substance.
4. it is according to claim 3 at the same measure capillary pressure, permeability and capillary performance parameter method, wherein：
In the step D2a：By multiple h2It is fitted to obtain liquid working substance capillary elevation process in testee with the data point of t
Square h of middle moistening height2The function relation curve and slope of curve k of t variations at any time1, using the porosity ε of testee,
The viscosity μ and slope k of liquid working substance1The capillary performance parameter of testee is calculated
In the step D2b：Obtain multiple wetting speed v's according to the data point of the corresponding moistening height h of multiple and different time t
Data point, then be fitted the data point of multiple v and 1/h and obtain liquid working substance wetting speed in capillary elevation process in testee
V utilizes the porosity ε of testee, liquid work with the moistening height inverse 1/h function relation curves changed and slope of curve k2
The capillary performance parameter S of testee is calculated in the viscosity μ and slope k 2 of matter1=K2εμ。
5. it is a kind of at the same measure capillary pressure, permeability and capillary performance parameter device, for measuring the hair of measured object simultaneously
Thin pressure, permeability and capillary performance parameter, including：
Liquid storage module, for holding liquid working substance；
Fixed module, for fixing testee, and make the bottom end of the testee submerge the liquid level of the liquid working substance with
Under；
Moistening height acquisition module, for obtaining liquid working substance, different time is corresponding in capillary elevation process in testee
Moistening height；And
Computing module is electrically connected with the moistening height acquisition module, and executes following operation：
Step A：According to the geometric dimension of testee, the porosity of testee is calculated；
Step B：According to liquid working substance in testee the corresponding moistening height of different time in capillary elevation process, moistened
Wet speed；
Step C：According to the physical-property parameter of liquid working substance, the porosity of testee and liquid working substance in testee not
Capillary pressure, permeability and the capillary performance parameter of the testee are calculated with time corresponding moistening height, wetting speed.
6. it is according to claim 5 at the same measure capillary pressure, permeability and capillary performance parameter device, it is described tested
Object be open microchannel base capillary structure, including open microchannel capillary structure and to microchannel surface modify micron knot
Structure or nanostructure and the composite construction based on open microchannel formed.
7. it is according to claim 6 at the same measure capillary pressure, permeability and capillary performance parameter device, wherein：
The cross section of microchannel is rectangle, trapezoidal, triangle or arc-shaped in the open microchannel base capillary structure；
The material of the open microchannel base capillary structure is metal, alloy, semiconductor, ceramics, oxide, organic polymer
At least one of material.
8. it is according to claim 5 at the same measure capillary pressure, permeability and capillary performance parameter device, further include：
Measurement module, the geometric dimension for measuring the testee.
9. it is according to claim 5 at the same measure capillary pressure, permeability and capillary performance parameter device, the liquid
Working medium is the liquid of known density ρ, viscosity μ and surface tension σ；
Wherein, the liquid working substance is：At least one of distilled water, deionized water, ethyl alcohol, methanol, acetone or refrigerant.
10. it is according to claim 5 at the same measure capillary pressure, permeability and capillary performance parameter device, the profit
Wet height acquisition module includes：
The object of reference of scale or known dimensions；And
Wet Out recorder, the Wet Out recorder are at least one of high-speed camera or infrared thermography.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342253A (en) * | 2018-11-29 | 2019-02-15 | 安徽工业大学 | A kind of loop heat pipe capillary core performance testing device and its test method |
| CN110146264A (en) * | 2019-05-15 | 2019-08-20 | 桂林电子科技大学 | A kind of capillary wick overload test device and method |
| CN112345408A (en) * | 2020-09-25 | 2021-02-09 | 北京空间机电研究所 | Device and method for measuring transport performance of high-pressure working medium in capillary structure |
| CN114542037A (en) * | 2022-03-16 | 2022-05-27 | 济南赢创智联技术咨询有限公司 | Steam co-injection solvent screening method using microfluid chip |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4648261A (en) * | 1985-11-12 | 1987-03-10 | Exxon Production Research Co. | Method for determining physical properties of a porous sample using capillary pressure measurement |
| CN102734799A (en) * | 2012-07-13 | 2012-10-17 | 广东电网公司电力科学研究院 | Screening method for manufacturing materials of porous medium burner |
| CN105403085A (en) * | 2015-12-14 | 2016-03-16 | 上海利正卫星应用技术有限公司 | Variable-parameter liquid absorption core ultrathin heat pipe |
| CN105526817A (en) * | 2015-11-09 | 2016-04-27 | 上海卫星装备研究所 | Sintering device and method capable of quantitatively controlling porosity parameters of capillary wick |
| CN107505243A (en) * | 2017-07-29 | 2017-12-22 | 广东工业大学 | A kind of method for testing conduit micro heat pipe Test Liquid Permeability of Core |
| CN108375340A (en) * | 2018-01-24 | 2018-08-07 | 中国科学院工程热物理研究所 | The visual measuring device and method for capillary wet length that microflute group is heat sink |
-
2018
- 2018-09-05 CN CN201811036993.2A patent/CN108776099A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4648261A (en) * | 1985-11-12 | 1987-03-10 | Exxon Production Research Co. | Method for determining physical properties of a porous sample using capillary pressure measurement |
| CN102734799A (en) * | 2012-07-13 | 2012-10-17 | 广东电网公司电力科学研究院 | Screening method for manufacturing materials of porous medium burner |
| CN105526817A (en) * | 2015-11-09 | 2016-04-27 | 上海卫星装备研究所 | Sintering device and method capable of quantitatively controlling porosity parameters of capillary wick |
| CN105403085A (en) * | 2015-12-14 | 2016-03-16 | 上海利正卫星应用技术有限公司 | Variable-parameter liquid absorption core ultrathin heat pipe |
| CN107505243A (en) * | 2017-07-29 | 2017-12-22 | 广东工业大学 | A kind of method for testing conduit micro heat pipe Test Liquid Permeability of Core |
| CN108375340A (en) * | 2018-01-24 | 2018-08-07 | 中国科学院工程热物理研究所 | The visual measuring device and method for capillary wet length that microflute group is heat sink |
Non-Patent Citations (5)
| Title |
|---|
| 方朝斌: "基于金属纤维和粉末烧结的复合吸液芯的制造及毛细性能研究", CNKI硕士论文全文库 * |
| 李金旺;邹勇;程林;: "多孔结构毛细抽吸模型及实验验证", 中国电机工程学报 * |
| 杜红普;刘波;王华军;齐承英;: "基于土水特征曲线预测多孔介质毛细上升过程", 工程地质学报 * |
| 杜红普等: "改进Washburn方程用于测定多孔介质渗透率的实验研究", 河北工业大学学报 * |
| 涂文斌;王匀;汤勇;: "气液分离强化传热多孔结构毛细上升特征", 化工学报 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342253A (en) * | 2018-11-29 | 2019-02-15 | 安徽工业大学 | A kind of loop heat pipe capillary core performance testing device and its test method |
| CN109342253B (en) * | 2018-11-29 | 2024-02-02 | 安徽工业大学 | Loop heat pipe capillary core performance testing device and testing method thereof |
| CN110146264A (en) * | 2019-05-15 | 2019-08-20 | 桂林电子科技大学 | A kind of capillary wick overload test device and method |
| CN112345408A (en) * | 2020-09-25 | 2021-02-09 | 北京空间机电研究所 | Device and method for measuring transport performance of high-pressure working medium in capillary structure |
| CN112345408B (en) * | 2020-09-25 | 2023-08-11 | 北京空间机电研究所 | Device and method for measuring transport performance of high-pressure working medium in capillary structure |
| CN114542037A (en) * | 2022-03-16 | 2022-05-27 | 济南赢创智联技术咨询有限公司 | Steam co-injection solvent screening method using microfluid chip |
| CN114542037B (en) * | 2022-03-16 | 2022-12-20 | 济南赢创智联技术咨询有限公司 | Steam co-injection solvent screening method using micro-fluid chip |
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Application publication date: 20181109 |