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solidWallHeatTransfer - calculation of Cp(Tw, patchi) in basic Solid |
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May 29, 2012, 05:08 |
solidWallHeatTransfer - calculation of Cp(Tw, patchi) in basic Solid
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Member
Klio
Join Date: Mar 2012
Location: Austria
Posts: 45
Rep Power: 14 |
Hello!
I try to implement a new BC called solidWallHeatTransfer. So I took the wallHeatTransfer BC from basicThermo to make the new BC for solids. Now there is the calculation of valueFraction(): const label patchi = patch().index(); const scalarField& Tw = thermo.T().boundaryField()[patchi]; const scalarField Cpw(thermo.Cp(Tw, patchi)); valueFraction() = 1.0/ ( 1.0 + Cpw*thermo.alpha().boundaryField()[patchi] *patch().deltaCoeffs()/alphaWall_ ); so thermo.alpha().boundaryField()[patchi]*patch().deltaCoeffs() should be K of the fluid -> in case of solid I just replaced it with K (const scalarField K = thermo.K(patchi); ) but how is Cpw calculated. I can't find the code or a description. It is dependent on the Temperature but in basicSolidThermo it is not possible to call the function Cp(Tw, patchi)! I also really don't know the meaning of the valueFraction! |
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