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Old   February 19, 2010, 14:27
Default Heat Flux
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Robin Gilbert
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Hello guys!!!

I need a help. I am new to OpenFOAM as well as CFD. so kindly help me.
I need to apply time varying heat flux as boundary condition. I know that there is wallHeatFlux. I tried to use wallHeatFlux in T as follows:

Code:
 
patch76
    {
        type            wallHeatFlux;
        value           uniform 1;
    }
    patch78
    {
        type            wallHeatFlux;
        value           uniform 1;
    }
    patch80
    {
        type            wallHeatFlux;
        value           uniform 1;
    }
but i am getting the following error.

Code:
Reading thermophysical properties

Selecting thermodynamics package hPsiThermo<pureMixture<sutherlandTransport<specieThermo<hConstThermo<perfectGas>>>>>


--> FOAM FATAL ERROR: 
Not Implemented
    Trying to construct an genericFvPatchField on patch patch76 of field h

    From function genericFvPatchField<Type>::genericFvPatchField(const fvPatch& p, const DimensionedField<Type, volMesh>& iF)
    in file fields/fvPatchFields/basic/generic/genericFvPatchField.C at line 45.
I know this is for constant heat flux. it would be helpful if u can tell me how to include time varying heat flux. i couldnt find any useful resources online for that aspect.
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Old   February 19, 2010, 16:59
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Eelco Gehring
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take a look at groovyBC, maybe that can help you out. I am not sure if you can specify the heat flux, but time varying is definitely possible.
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Old   February 19, 2010, 17:09
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Robin Gilbert
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thank you!! i will look at that...
Can anyone tell me if it is possible to give heat as a bc. like x joules heat coming from an internal heat source (like a wall or something??)

Last edited by robingilbert; February 19, 2010 at 17:37.
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Old   March 16, 2010, 16:38
Default Heat Flux BC
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Hamish Lewis
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Did you ever have any luck in finding a way to add a heat flux boundary condition?
Thanks
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