wall heat flux in openfoam

hz283 · November 30, 2013, 16:25

Dear All,

In openfoam (like version 211), the wall heat flux is defined as the volScalarField. This means, for my understanding, that the wall heat flux is treated a scalar field stored in both cell centers (infield) and boundary field. Actually, when we are particularly interested in wall heat flux, this volScalarField is zero in all the cell centers except the cell faces just the walls:

wallheatflux.internalField() is zero everywhere, wallheatflux.boundaryField() is also zero except for the wall boundries.

Is this understanding correct?

For my case, I would like to use the wall heat flux for solving other equations as a source term. Therefore, it seems that I need to make the wallheatflux to be stored in cell center when the wallheatflux.boundaryField() is not zero for that cell. In other words, how can I put the heat flux original in the wallheatflux.boundaryField() to cell centers?

Thank you very much.

jherb · January 4, 2014, 08:51

Which solver do you mean to use heatFlux?

There is a boundary condition turbulentHeatFluxTemperature:
https://github.com/OpenFOAM/OpenFOAM...hScalarField.H
But this effects the temperature scalar field.

November 30, 2013, 16:25	wall heat flux in openfoam	#1
hz283 Senior Member Join Date: Nov 2012 Posts: 171 Rep Power: 14	Dear All, In openfoam (like version 211), the wall heat flux is defined as the volScalarField. This means, for my understanding, that the wall heat flux is treated a scalar field stored in both cell centers (infield) and boundary field. Actually, when we are particularly interested in wall heat flux, this volScalarField is zero in all the cell centers except the cell faces just the walls: wallheatflux.internalField() is zero everywhere, wallheatflux.boundaryField() is also zero except for the wall boundries. Is this understanding correct? For my case, I would like to use the wall heat flux for solving other equations as a source term. Therefore, it seems that I need to make the wallheatflux to be stored in cell center when the wallheatflux.boundaryField() is not zero for that cell. In other words, how can I put the heat flux original in the wallheatflux.boundaryField() to cell centers? Thank you very much.

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January 4, 2014, 08:51		#2
jherb Senior Member Joachim Herb Join Date: Sep 2010 Posts: 650 Rep Power: 22	Which solver do you mean to use heatFlux? There is a boundary condition turbulentHeatFluxTemperature: https://github.com/OpenFOAM/OpenFOAM...hScalarField.H But this effects the temperature scalar field.