CN108491676A - The heat-proof quality simulating analysis and system of heat shield - Google Patents
The heat-proof quality simulating analysis and system of heat shield Download PDFInfo
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- CN108491676A CN108491676A CN201810714024.1A CN201810714024A CN108491676A CN 108491676 A CN108491676 A CN 108491676A CN 201810714024 A CN201810714024 A CN 201810714024A CN 108491676 A CN108491676 A CN 108491676A
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Abstract
The invention discloses the heat-proof quality simulating analysis and system of a kind of heat shield.Wherein, method includes：Grid model is established according to the actual geometry of heat source and heat shield；Every layer in the network model of heat shield of simulation parameter is set, wherein simulation parameter includes：The coefficient of heat conduction of the layers of insulating fabric along the coefficient of heat conduction in the surface tangent direction of layers of insulating fabric and the surface direction of vertical layers of insulating fabric；Heat radiation condition and convection boundary condition are set；According to heat radiation condition and convection boundary condition, the heat-proof quality for being thermally shielded cover by network model according to preset simulation parameters emulates, to determine the heat-proof quality of heat shield.The method of the present invention is capable of the influence of conduction of the real embodiment individual material properties to heat in every layer of heat-barrier material, and it is capable of each influence conducted to dissimilarity to heat of the heat conductivility of real embodiment heat-barrier material, so as to accurately determine out the heat-proof quality of heat shield.
Description
Technical field
The present invention relates to automobile technical field, more particularly to the heat-proof quality simulating analysis of a kind of heat shield.
Background technology
Automobile engine generates a large amount of high-temp waste gas in the process of running, is discharged by the exhaust system of automobile.It is vented discrimination
The structures such as pipe are the high temperature heat source components in enging cabin, can generate huge heat radiation to the cabin parts for being arranged in surrounding
Effect, it is therefore desirable to take effective provision for thermal insulation before heat source and heat evil component.Compared to common single-layer metal material
Heat shield, three layers of heat insulation structural of the heat shield generally use metal+heat insulation fiber+metal of " sandwich " structure, heat insulation
More preferably, the reason is that intermediate heat insulation fiber not only the coefficient of heat conduction is low, but also be more than along method in the coefficient of heat conduction of in-plane
To the coefficient of heat conduction.
Common multilayer material heat shield emulation mode, it is believed that the coefficient of heat conduction of each heat-barrier material is isotropism
, while the conduction process between layers of material is reduced to the one dimensional heat transfer process from high temperature side to low temperature side, it is counted by theory
Compound material characterisitic parameter is calculated, including the comprehensive coefficient of heat conduction, comprehensive specific heat capacity and compound material density.In the process of modeling
In, the overall geometry outer surface of heat shield is only established out, internal structure is not paid attention to.There are the problem of：It (1) cannot be true
Embody the influence of conduction of the individual material properties to heat in every layer of heat-barrier material；(2) heat conduction of heat-barrier material cannot be embodied
Each influence that heat is conducted to dissimilarity of performance.
Invention content
The present invention is directed to solve at least to a certain extent it is above-mentioned in the related technology the technical issues of one of.
For this purpose, first purpose of the present invention is to propose a kind of heat-proof quality simulating analysis of heat shield.The party
Method is capable of the influence of conduction of the real embodiment individual material properties to heat in every layer of heat-barrier material, and being capable of real embodiment
Each influence that heat is conducted to dissimilarity of the heat conductivility of heat-barrier material, so as to accurately determine out heat shield every
Hot property.
It is another object of the present invention to provide a kind of heat-proof quality simulation analysis systems of heat shield.
To achieve the goals above, it is imitative to disclose a kind of heat-proof quality of heat shield for the embodiment of the first aspect of the present invention
True analysis method, the heat shield include：Metal outer, inner metallic layer and set on the metal outer and the inner metallic layer it
Between layers of insulating fabric, the method includes：Grid model is established according to the actual geometry of heat source and heat shield, wherein
The network model of the heat shield includes the network model of every layer of heat-barrier material；It is arranged in the network model of the heat shield every
The simulation parameter of layer, wherein the simulation parameter includes：The density of the metal outer and the inner metallic layer, specific heat and heat
The coefficient of conductivity, density, specific heat and the coefficient of heat conduction along the surface tangent direction of layers of insulating fabric of the layers of insulating fabric
With the coefficient of heat conduction of the surface direction of the vertical layers of insulating fabric；Heat radiation condition and convection boundary condition are set；Foundation
The heat radiation condition and convection boundary condition are thermally shielded cover according to preset simulation parameters by the network model
Heat-proof quality emulation, with the heat-proof quality of the determination heat shield.
The heat-proof quality simulating analysis of heat shield according to the ... of the embodiment of the present invention, being capable of real embodiment different materials
The influence of conduction that can be to heat in every layer of heat-barrier material, and be capable of real embodiment heat-barrier material heat conductivility it is each to
The influence that dissimilarity conducts heat, so as to accurately determine out the heat-proof quality of heat shield.
In some instances, the network model, including：The geometric model of the metal outer of heat shield, heat shield
The geometric model of layers of insulating fabric, heat shield inner metallic layer geometric model and the heat source geometry knot
Structure model.
In some instances, along the coefficient of heat conduction in the surface tangent direction of layers of insulating fabric and the vertical heat insulation fiber
The coefficient of heat conduction of the surface direction of layer obtains as follows：Vector letter of the definition suitable for the expression surface normal on surface
Number makes direction vector of the phasor function on any one grid of surface be the normal direction at the surface, and the arrow
It measures direction and is directed toward direction of the heat from high temperature to Conduction At Low Temperature, setting layers of insulating fabric is on the phasor function assigned direction
The coefficient of heat conduction of the coefficient of heat conduction as the surface direction of the vertical layers of insulating fabric；Table of the definition suitable for surface
The phasor function of presentation surface tangential direction, it is described to make direction vector of the phasor function on any one grid of surface
Tangential direction at surface；The coefficient of heat conduction of the layers of insulating fabric on the phasor function assigned direction is arranged to be used as along heat-insulated
The coefficient of heat conduction in the surface tangent direction of fibrous layer.
In some instances, the setting heat radiation condition and convection boundary condition, including：Every layer of surface emitting is set
Rate is calculated for radiating；Heat source calorific value or surface temperature and the emissivity of heat source surface are set；Surrounding flow field is set
Convection boundary condition, including：The entrance and exit boundary condition of computational domain, environment temperature.
In some instances, according to the heat radiation condition and convection boundary condition, according to preset simulation parameters
The heat-proof quality emulation of cover is thermally shielded by the network model, with the heat-proof quality of the determination heat shield, including：It determines
The influence of conductive performance of every layer of the performance to heat in every layer and the heat conductivility of layers of insulating fabric it is each to dissimilarity
Influence to heat conduction.
The embodiment of the second aspect of the present invention discloses a kind of heat-proof quality simulation analysis system of heat shield, it is described every
Heat is covered：Metal outer, inner metallic layer and the layers of insulating fabric between the metal outer and the inner metallic layer, institute
The system of stating includes：Model building module, for establishing grid model according to the actual geometry of heat source and heat shield, wherein
The network model of the heat shield includes the network model of every layer of heat-barrier material；Simulation parameter setup module, for being arranged
State every layer in the network model of heat shield of simulation parameter, wherein the simulation parameter includes：The metal outer and the gold
Belong to the density of internal layer, specific heat and the coefficient of heat conduction, density, specific heat and the surface along layers of insulating fabric of the layers of insulating fabric
The coefficient of heat conduction of the surface direction of the coefficient of heat conduction of tangential direction and the vertical layers of insulating fabric；Condition setting module,
For heat radiation condition and convection boundary condition to be arranged；Emulation module, for according to the heat radiation condition and convective boundary item
Part, the heat-proof quality for being thermally shielded cover by the network model according to preset simulation parameters emulates, described in determination
The heat-proof quality of heat shield.
The heat-proof quality simulation analysis system of heat shield according to the ... of the embodiment of the present invention, being capable of real embodiment different materials
The influence of conduction that can be to heat in every layer of heat-barrier material, and be capable of real embodiment heat-barrier material heat conductivility it is each to
The influence that dissimilarity conducts heat, so as to accurately determine out the heat-proof quality of heat shield.
In some instances, the network model, including：The geometric model of the metal outer of heat shield, heat shield
The geometric model of layers of insulating fabric, heat shield inner metallic layer geometric model and the heat source geometry knot
Structure model.
In some instances, along the coefficient of heat conduction in the surface tangent direction of layers of insulating fabric and the vertical heat insulation fiber
The coefficient of heat conduction of the surface direction of layer obtains as follows：Vector letter of the definition suitable for the expression surface normal on surface
Number makes direction vector of the phasor function on any one grid of surface be the normal direction at the surface, and the arrow
It measures direction and is directed toward direction of the heat from high temperature to Conduction At Low Temperature, setting layers of insulating fabric is on the phasor function assigned direction
The coefficient of heat conduction of the coefficient of heat conduction as the surface direction of the vertical layers of insulating fabric；Table of the definition suitable for surface
The phasor function of presentation surface tangential direction, it is described to make direction vector of the phasor function on any one grid of surface
Tangential direction at surface；The coefficient of heat conduction of the layers of insulating fabric on the phasor function assigned direction is arranged to be used as along heat-insulated
The coefficient of heat conduction in the surface tangent direction of fibrous layer.
In some instances, the setting heat radiation condition and convection boundary condition, including：Every layer of surface emitting is set
Rate is calculated for radiating；Heat source calorific value or surface temperature and the emissivity of heat source surface are set；Surrounding flow field is set
Convection boundary condition, including：The entrance and exit boundary condition of computational domain, environment temperature.
In some instances, the emulation module is used to determine conductive performance of every layer of the performance to heat in every layer
Each influence that heat is conducted to dissimilarity of the heat conductivility of influence and layers of insulating fabric.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned or additional aspect and advantage combination following accompanying drawings of the present invention will be to that will become bright in the description of embodiment
It shows and is readily appreciated that, wherein：
Fig. 1 is the flow chart of the heat-proof quality simulating analysis of heat shield according to an embodiment of the invention；
Fig. 2 be heat shield according to an embodiment of the invention heat-proof quality simulating analysis in heat source and heat shield
3 d geometric modeling schematic diagram；
Fig. 3 be heat shield according to an embodiment of the invention heat-proof quality simulating analysis in heat insulation fiber along table
The normal direction function floor map in face；
Fig. 4 be heat shield according to an embodiment of the invention heat-proof quality simulating analysis in heat insulation fiber along table
The normal direction function schematic three dimensional views in face；
Fig. 5 be heat shield according to an embodiment of the invention heat-proof quality simulating analysis in heat insulation fiber along table
The tangent function floor map in face；
Fig. 6 is the structure diagram of the heat-proof quality simulation analysis system of heat shield according to an embodiment of the invention.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
The heat-proof quality simulating analysis and system of heat shield according to the ... of the embodiment of the present invention are described below in conjunction with attached drawing.
Before the heat-proof quality simulating analysis for describing heat shield according to the ... of the embodiment of the present invention, first to heat shield
Illustrate, in the embodiment of the present invention, heat shield includes：Metal outer, inner metallic layer and set between metal outer and inner metallic layer
Layers of insulating fabric.As shown in Fig. 2, including the heat shield of three layers of " sandwich ".
Fig. 1 is the flow chart of the heat-proof quality simulating analysis of heat shield according to an embodiment of the invention.Such as Fig. 1
Shown, the heat-proof quality simulating analysis of heat shield according to an embodiment of the invention includes the following steps：
S101：Grid model is established according to the actual geometry of heat source and heat shield, wherein the network of the heat shield
Model includes the network model of every layer of heat-barrier material.
Wherein, network model, including：The geometric model of the metal outer of heat shield, the layers of insulating fabric of heat shield
Geometric model, heat shield inner metallic layer geometric model and the heat source geometric model.
That is, the geometry of heat source, " sandwich " structural heat-insulation every layer of heat-barrier material of cover is established respectively, it is specific several
What model is as shown in Fig. 2, to establish the geometry of the outermost material 1 (metal outer) of heat shield, heat shield middle layer heat-insulated
Geometry, the heat source 4 of the geometry of fibrous material 2 (layers of insulating fabric), the innermost layer material 3 (inner metallic layer) of heat shield
Geometry.
S102：Every layer in the network model of the heat shield of simulation parameter is set, wherein the simulation parameter includes：
The density of the metal outer and the inner metallic layer, specific heat and the coefficient of heat conduction, the density of the layers of insulating fabric, specific heat with
And the heat of the surface direction along the coefficient of heat conduction and vertical layers of insulating fabric in the surface tangent direction of layers of insulating fabric passes
Lead coefficient.
I.e.：The material properties of every layer of heat-barrier material in the heat shield of " sandwich " structure are set.
The material properties of heat-barrier material include the density (kg/m of material3), specific heat (J/kg-K) and the coefficient of heat conduction (W/
m-K).Density, specific heat and the coefficient of heat conduction of metal material are definite value.For intermediate insulating fibre material, density of material
It is definite value with specific heat, and the coefficient of heat conduction is respectively different in the direction along plane and the direction perpendicular to plane, needs to distinguish
Definition：
(1) phasor function for defining the expression surface normal that one is suitable for any complex surface, ensures the function in material
Direction vector on material any one grid of surface is the normal direction at the surface, and the direction is directed toward heat from high temperature to low temperature
The direction of conduction.
The coefficient of heat conduction of the insulating fibre material on the function assigned direction, that is, the heat in vertical surface direction are set
The coefficient of conductivity.
(2) phasor function for indicating surface tangent direction for being suitable for any complex surface is defined, ensures the function
Direction vector on material surface any one grid is the tangential direction at the surface.
In the above examples, for intermediate thermal insulation layer, the definition of the coefficient of heat conduction needs to define phasor function
It realizes.First, the phasor function of an expression heat shield intermediate layer material surface normal as shown in Figure 3 and Figure 4, the letter are defined
Number vector value at each surface mesh is 1, and the direction is directed toward direction of the heat from high temperature to Conduction At Low Temperature, and the function is arranged
Material thermal conductivity coefficient on assigned direction；Secondly, an expression heat shield intermediate layer material surface as shown in Figure 5 is defined to cut
To phasor function, the function at each surface mesh vector value be 1, the material thermal conductivity on the function assigned direction is set
Coefficient.
S103：Heat radiation condition and convection boundary condition are set.
It specifically includes：Every layer of slin emissivity is set, is calculated for radiating；Heat source calorific value or surface temperature are set,
And the emissivity of heat source surface；The convection boundary condition in surrounding flow field is set, including：The entrance and exit perimeter strip of computational domain
Part, environment temperature etc..
S104：According to heat radiation condition and convection boundary condition, pass through network model according to preset simulation parameters
It is thermally shielded the heat-proof quality emulation of cover, to determine the heat-proof quality of heat shield.
Such as：Determine the influence of conductive performance of every layer of the performance to heat in every layer and the heat conduction of layers of insulating fabric
Each influence that heat is conducted to dissimilarity of performance.Wherein, preset simulation parameters, including calculate step number, time step
It is long, the parameters such as real-time monitoring of data, so that it is determined that the heat-proof quality of heat shield.
The heat-proof quality simulating analysis of heat shield according to the ... of the embodiment of the present invention, being capable of real embodiment different materials
The influence of conduction that can be to heat in every layer of heat-barrier material, and be capable of real embodiment heat-barrier material heat conductivility it is each to
The influence that dissimilarity conducts heat, so as to accurately determine out the heat-proof quality of heat shield.
As shown in fig. 6, embodiment of the invention discloses that a kind of heat-proof quality simulation analysis system 600 of heat shield, packet
It includes：Model building module 610, simulation parameter setup module 620, condition setting module 630 and emulation module 640.
Wherein, model building module 610 is used to establish grid model according to the actual geometry of heat source and heat shield,
In, the network model of the heat shield includes the network model of every layer of heat-barrier material.Simulation parameter setup module 620 is for setting
Set every layer in the network model of the heat shield of simulation parameter, wherein the simulation parameter includes：The metal outer and institute
State the density of inner metallic layer, specific heat and the coefficient of heat conduction, the density of the layers of insulating fabric, specific heat and along layers of insulating fabric
The coefficient of heat conduction of the surface direction of the coefficient of heat conduction in surface tangent direction and the vertical layers of insulating fabric.Condition setting mould
Block 630 is for being arranged heat radiation condition and convection boundary condition.Emulation module 640 is used for according to the heat radiation condition and convection current
Boundary condition, the heat-proof quality for being thermally shielded cover by the network model according to preset simulation parameters emulates, with true
The heat-proof quality of the fixed heat shield.
In one embodiment of the invention, the network model, including：The geometry mould of the metal outer of heat shield
Type, the geometric model of layers of insulating fabric of heat shield, heat shield inner metallic layer geometric model and the heat
The geometric model in source.
In one embodiment of the invention, along the coefficient of heat conduction in the surface tangent direction of layers of insulating fabric and vertical institute
The coefficient of heat conduction for stating the surface direction of layers of insulating fabric obtains as follows：Expression surface normal of the definition suitable for surface
Phasor function, it is the normal direction at the surface to make direction vector of the phasor function on any one grid of surface,
And the direction vector is directed toward direction of the heat from high temperature to Conduction At Low Temperature, setting layers of insulating fabric is specified in the phasor function
The coefficient of heat conduction of the coefficient of heat conduction as the vertically surface direction of the layers of insulating fabric on direction；Definition is suitable for
The phasor function for indicating surface tangent direction on surface, makes direction vector of the phasor function on any one grid of surface
It is the tangential direction at the surface；The coefficient of heat conduction of the layers of insulating fabric on the phasor function assigned direction is arranged to make
For along the coefficient of heat conduction in the surface tangent direction of layers of insulating fabric.
In one embodiment of the invention, the setting heat radiation condition and convection boundary condition, including：It is arranged every layer
Slin emissivity, for radiate calculate；Heat source calorific value or surface temperature and the emissivity of heat source surface are set；Setting
The convection boundary condition in surrounding flow field, including：The entrance and exit boundary condition of computational domain, environment temperature.
In one embodiment of the invention, the emulation module 640 is used to determine every layer of performance to heat at every layer
The influence of interior conductive performance and each influence that heat is conducted to dissimilarity of the heat conductivility of layers of insulating fabric.
The heat-proof quality simulation analysis system of heat shield according to the ... of the embodiment of the present invention, being capable of real embodiment different materials
The influence of conduction that can be to heat in every layer of heat-barrier material, and be capable of real embodiment heat-barrier material heat conductivility it is each to
The influence that dissimilarity conducts heat, so as to accurately determine out the heat-proof quality of heat shield.
It should be noted that the specific implementation of the heat-proof quality simulation analysis system of the heat shield of the embodiment of the present invention
It is similar with the specific implementation of heat-proof quality simulation analysis system of the heat shield of the embodiment of the present invention, specifically refer to method
Partial description is not repeated herein to reduce redundancy.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It is that must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiments or example.In addition, without conflicting with each other, this field
Technical staff can carry out the feature of different embodiments or examples described in this specification and different embodiments or examples
In conjunction with and combination.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of heat-proof quality simulating analysis of heat shield, which is characterized in that the heat shield includes：Metal outer, gold
Belong to internal layer and the layers of insulating fabric between the metal outer and the inner metallic layer, the method includes：
Grid model is established according to the actual geometry of heat source and heat shield, wherein the network model of the heat shield includes
The network model of every layer of heat-barrier material；
Every layer in the network model of the heat shield of simulation parameter is set, wherein the simulation parameter includes：Outside the metal
The density of layer and the inner metallic layer, specific heat and the coefficient of heat conduction, the density of the layers of insulating fabric, specific heat and along heat-insulated fibre
Tie up the coefficient of heat conduction of the coefficient of heat conduction in the surface tangent direction of layer and the surface direction of the vertical layers of insulating fabric；
Heat radiation condition and convection boundary condition are set；
According to the heat radiation condition and convection boundary condition, according to preset simulation parameters by the network model into
The heat-proof quality of row heat shield emulates, with the heat-proof quality of the determination heat shield.
2. the heat-proof quality simulating analysis of heat shield according to claim 1, which is characterized in that the network mould
Type, including：It is the geometric model of the metal outer of heat shield, the geometric model of the layers of insulating fabric of heat shield, heat-insulated
The geometric model of the geometric model of the inner metallic layer of cover and the heat source.
3. the heat-proof quality simulating analysis of heat shield according to claim 1, which is characterized in that along layers of insulating fabric
Surface tangent direction the coefficient of heat conduction and the vertical layers of insulating fabric surface direction the coefficient of heat conduction with such as lower section
Formula obtains：
Phasor function of the definition suitable for the expression surface normal on surface, makes the phasor function on any one grid of surface
Direction vector be normal direction at the surface, and the direction vector is directed toward direction of the heat from high temperature to Conduction At Low Temperature,
The coefficient of heat conduction of the layers of insulating fabric on the phasor function assigned direction is set as the vertical layers of insulating fabric
Surface direction the coefficient of heat conduction；
The phasor function that indicates surface tangent direction of the definition suitable for surface, makes the phasor function in any one net of surface
Direction vector on lattice is the tangential direction at the surface；Layers of insulating fabric is set on the phasor function assigned direction
The coefficient of heat conduction as the coefficient of heat conduction along the surface tangent direction of layers of insulating fabric.
4. the heat-proof quality simulating analysis of heat shield according to claim 1, which is characterized in that the hot spoke of setting
Condition and convection boundary condition are penetrated, including：
Every layer of slin emissivity is set, is calculated for radiating；
Heat source calorific value or surface temperature and the emissivity of heat source surface are set；
The convection boundary condition in surrounding flow field is set, including：The entrance and exit boundary condition of computational domain, environment temperature.
5. the heat-proof quality simulating analysis of heat shield according to claim 1, which is characterized in that
According to the heat radiation condition and convection boundary condition, according to preset simulation parameters by the network model into
The heat-proof quality of row heat shield emulates, with the heat-proof quality of the determination heat shield, including：
Determine each of the influence of conductive performance of every layer of the performance to heat in every layer and the heat conductivility of layers of insulating fabric
The influence that heat is conducted to dissimilarity.
6. a kind of heat-proof quality simulation analysis system of heat shield, which is characterized in that the heat shield includes：Metal outer, gold
Belong to internal layer and the layers of insulating fabric between the metal outer and the inner metallic layer, the system comprises：
Model building module, for establishing grid model according to the actual geometry of heat source and heat shield, wherein described heat-insulated
The network model of cover includes the network model of every layer of heat-barrier material；
Simulation parameter setup module, the simulation parameter for being arranged every layer in the network model of the heat shield, wherein described imitative
True parameter includes：The density of the metal outer and the inner metallic layer, specific heat and the coefficient of heat conduction, the layers of insulating fabric
The surface of density, specific heat and the coefficient of heat conduction and the vertical layers of insulating fabric along the surface tangent direction of layers of insulating fabric
The coefficient of heat conduction in direction；
Condition setting module, for heat radiation condition and convection boundary condition to be arranged；
Emulation module, for according to the heat radiation condition and convection boundary condition, being passed through according to preset simulation parameters
The network model is thermally shielded the heat-proof quality emulation of cover, with the heat-proof quality of the determination heat shield.
7. the heat-proof quality simulation analysis system of heat shield according to claim 6, which is characterized in that the network mould
Type, including：It is the geometric model of the metal outer of heat shield, the geometric model of the layers of insulating fabric of heat shield, heat-insulated
The geometric model of the geometric model of the inner metallic layer of cover and the heat source.
8. the heat-proof quality simulation analysis system of heat shield according to claim 6, which is characterized in that along layers of insulating fabric
Surface tangent direction the coefficient of heat conduction and the vertical layers of insulating fabric surface direction the coefficient of heat conduction with such as lower section
Formula obtains：
Phasor function of the definition suitable for the expression surface normal on surface, makes the phasor function on any one grid of surface
Direction vector be normal direction at the surface, and the direction vector is directed toward direction of the heat from high temperature to Conduction At Low Temperature,
The coefficient of heat conduction of the layers of insulating fabric on the phasor function assigned direction is set as the vertical layers of insulating fabric
Surface direction the coefficient of heat conduction；
The phasor function that indicates surface tangent direction of the definition suitable for surface, makes the phasor function in any one net of surface
Direction vector on lattice is the tangential direction at the surface；Layers of insulating fabric is set on the phasor function assigned direction
The coefficient of heat conduction as the coefficient of heat conduction along the surface tangent direction of layers of insulating fabric.
9. the heat-proof quality simulation analysis system of heat shield according to claim 6, which is characterized in that the hot spoke of setting
Condition and convection boundary condition are penetrated, including：
Every layer of slin emissivity is set, is calculated for radiating；
Heat source calorific value or surface temperature and the emissivity of heat source surface are set；
The convection boundary condition in surrounding flow field is set, including：The entrance and exit boundary condition of computational domain, environment temperature.
10. the heat-proof quality simulation analysis system of heat shield according to claim 6, which is characterized in that the emulation mould
The heat conductivility of influence and layers of insulating fabric of the block for determining conductive performance of every layer of the performance to heat in every layer
The influence that respectively heat is conducted to dissimilarity.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113626932A (en) * | 2021-08-11 | 2021-11-09 | 长春理工大学 | Assembly method for eliminating array heat-proof structure paving accumulated error |
| CN117236144A (en) * | 2023-11-15 | 2023-12-15 | 中国空气动力研究与发展中心计算空气动力研究所 | Method for determining heat conduction main axis of orthotropic heat-proof material based on mounting molded surface |
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