Applications of CFD tools in PCB, Board-level and Chassis Level Thermal Simulations
There are vast range of applications of thermal simulations in electronics industry dealing with Printed Circuit Board (PCB), Board and chassis level simulation, thermal management of data centres including specialized cooling methods like heat sinks, TEC (Thermo-Electric Cooling), heat pipes, PCM (Phase Change Material), heat spreaders...
|Melting point, TMP||As per temperature control||Selection of material will depend on temperature to be maintained|
|Specific heat capacity, Cp||High||Energy storate capacity ∝ Cp. Higher the Cp, lesser the mass required to store a given amount of energy.|
|Density, ρ||High||Energy storate capacity ∝ ρ and the volume required is also less as m = ρ * V|
|Thermal Conductivity, k||High for energy storage purpose||Low value is required for insulation where heat is to be maintained near the source itself|
|Coefficient of volume expansion, γ||Low||This governs flexibility or void space required in the storage container|
|Chemical compatibility||Non-corrosive||Should not react with the container and other materials in case of leaks|
|Thermal cycling (heating-cooling) stability||No degradation||The micro-structure and material properties should not degrade with heating-cooling cycles|
ICEPAK is a GUI for pre- and post-processing. It uses FLUENT as solver and in this process many files get created. Following is a list of files and its owner (ICEPAK or FLUENT?).
|File Type||Created by||Used by||Suffix / Filename||Remark|
|Mesh input||ICEPAK||mesher||grid_input||Inputs for the mesh generator.|
|Mesh output||mesher||ICEPAK||grid_output||Output from the mesh generator; that is, the mesh file|
|Case||ICEPAK||FLUENT||.cas||Contains all the information that is needed by ICEPAK to run the solver|
|Data||FLUENT||FLUENT||.dat, .fdat||Files when it has finished calculating: *.dat and *.fdat. These data files can be used to restart the solver|
|Residual||FLUENT||ICEPAK||.res||Information about convergence monitors: Solve -> Solution monitor or select Convergence plot in Post menu|
|Script||ICEPAK||ICEPAK||.SCRIPT or _sc.bat||Runs the solver executable, and can also be used to run the solver in batch mode.|
|Solver input||ICEPAK||FLUENT||.uns_in||The solver input file (projectname.uns_in) is read by the solver to start the calculation.|
|Solver output||FLUENT||–||.uns_out||Information from solver that is displayed on screen during calculation - this file is written only on Linux systems|
|Diagnostic||ICEPAK||–||.diag||Contains information about correspondence between object names in model file and object names in case file|
|Optimization||ICEPAK||optimizer||.log, .dat, .tab, .post, .rpt||Optimization of field variables|
|Postprocessing||FLUENT||ICEPAK||.resd||Used by ICEPAK for postprocessing. All solutions that exist for the current project are listed by solution ID.|
|Geometry||External||ICEPAK||.igs, .stp||CAD geometry - input to ICEPAK|
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