[mwaqas]

Hello Everyone,


I am using OF50 for 2D steady state conjugate heat transfer problem (using chtMultiregionSimpleFoam) with heat source. I have 84 disconnected solid region (blue part in image) and fluid passing across solid regions (green part). I have used following fvOptions file for heat source

energySource
{
type scalarSemiImplicitSource;
active true;
selectionMode all;
scalarSemiImplicitSourceCoeffs
{
volumeMode specific;//
selectionMode all;
injectionRateSuSp
{
h (89878 0); // q in [W]; or in [W/m³] if you use specific mode (90570 0)
}
}
}

I have placed this fvOptions file in every system/solid.

The heat source is correct for my setup because same heat source has been used in Ansys and giving physical results.
In my case (OpenFOAM), I used 298K as initial temperature for both solid and fluid regions. Once I start simulation, the temperature keep on increasing for both sold and fluid region (I checked temperature rise up to 500K in 50000 iteration). I am unable to figure out my mistake. Could anyone please tell me the right direction to look for my mistake. I have attached my log file with it (due to size constraints I could not attach my complete log file).





Moreover, I have used same simulation setup for transient case with initial temperature of solid 333K and it was fine with results comparable with ansys as well as experiments.


PS: Unfortunately, I cannot share my entire case here


Regards