wall temperature fixedGradient in buoyantBoussinesqSimpleFoam
I'm trying to simulate flow inside a circular duct with constan heat flux in the wall. To do that I have imposed a temperature fixedGradient b.c at the wall, but the results are not logical: the temperature at the wall is constant and it must be increasing with the axial longitude. Moreover, the axial temperature profile is also constant with the axial longitude. I think is a problem with the fixedGradient b.c but I donīt know what, because the relation
must be met in the wall.
I'm simulating laminar flow (laminar RASmodel). I will be glad if anyone can explain how does it work or how exactly I can impose a heat flux.
Thankyou very much
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