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Time dependent heat flux

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Old   November 14, 2012, 17:59
Default Time dependent heat flux
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Nikunj Raithatha
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Hello All!

I am trying to simulate an example with a trubulentHeatFluxTemperature boundary condition. While I have successfully implemented this BC, I am wanting to introduce time dependent heat flux in table format, where one specifies time and the corresponding heat flux value. I believe it is doable for fields like T, U using uniformFixedValue type, I dont know how to do it while using trubulentHeatFluxTemperature type.

Please let me know how to recompile this BC type or related discussions.

Thanks.
Nikunj.
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Old   January 22, 2013, 06:55
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Robert
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Hey Nikunj,

have you already found a way to do this? It's exactly the problem I'm facing right now.

Best regards,

Robert
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Old   April 15, 2015, 04:55
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Jules
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Dear all ,

I 'm also facing this problem. I would like to define two linearly time dependent boundary conditions : a wall heat flux ( W/m^2) and a mixture gas mass flow rate (kg/s). For the heat flux , I was testing the compressible::turbulentHeatFluxTemperature boundary condition on the hot room tutorial case from tutorials/heatTransfer/buoyantPimpleFoam and I modified the Temperature boundary condition for the floor like this :

Code:
floor
    {
        type compressible::turbulentHeatFluxTemperature;
        heatSource flux; // flux for W/m^2
        q  tableFile;
        tableFileCoeffs
       {
         fileName   "/home/user/Openfoam/hotRoom/myDataFile.txt"
         outOfBounds   clamp;
      
       }
       kappa fluidThermo;
       Qr none;
       kappaName       none;
       value uniform 300;
       }
However this way does not seem to work as q expects the key word uniform with scalar value. May someone provide hints to do some time-dependent heat flux and mass flow rate BC ?

Thank you in advance !
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