CFD Online Discussion Forums - BuoyantBoussinesqPimpleFoam and wallHeatTransfer

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BuoyantBoussinesqPimpleFoam and wallHeatTransfer

I am trying to model the heat transfer from a cup of water to the surrounding air. The solver in use is BuoyantBoussinesqPimpleFoam.

I thought about modifying the file ./0/T like that:

Quote:

boundaryField
{
mantle
{
type wallHeatTransfer;
alphaWall uniform 1.5;
Tinf 293;
value uniform 293;
}
}

source:
(1) (2)

I suppose, 'Tinf' is the temperature of air, but what is 'value'??? Moreover, I am not sure about 'alphaWall' - is it the heat transfer factor for the whole wall, or only for the interface wall-air?

OF stops with the error message:

Quote:

From function fvPatchField<Type>::New(const fvPatch&, const DimensionedField<Type, volMesh>&, const dictionary&)
in file [...] fvPatchFieldNew.C

The thing is, I don't know where the error is. Maybe I have to install sth. else? I thougt about 'groovyBC', too, but install procedure is not working yet.

I found the problem: 'wallHeatTransfer' is not available in buoyantBoussinesqPimpleFoam. Is there any other wall function which calculates the heat flow from a given heat transfer factor? There are so many different patches and I do not know which to take ...

Quote:

...
epsilonWallFunction
kappatJayatillekaWallFunction
kqRWallFunction
nutLowReWallFunction
nutTabulatedWallFunction
nutRoughWallFunction
nutUSpaldingWallFunction
nutkRoughWallFunction
nutkWallFunction
omegaWallFunction
...