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Heat flux boundary in incompresible solver

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Old   November 14, 2022, 20:00
Default Heat flux boundary in incompresible solver
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Christian Pinzón
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Hi everyone

I simulated a case in wich I have a wall with a heat flux (q=2000 W/m2) using pimpleFoam, I fix a boundary condition as a fixGradient in the next way:

Code:
 plate
    {
        type fixedGradient; //fixed heat flux b.c.
        gradient uniform 2000;

    }
I postprocesed the data using Plot over Line in Paraview so as to get h (convective coefficient), I extract the T_i results and then I calculate h=q/(T_inf-T_i). My question is, It possible to calculate in that way? or I should have to calcule with other stepts or in other way, because when I calculate that I get some results (figure 1) arround 20 times the expected value. (figure 2).

It is correct to used that boundary in a scalar transport temperature file in that way? Thanks
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File Type: png figure1Calculated.png (25.1 KB, 5 views)
File Type: png figure2Expected.png (17.4 KB, 5 views)
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