[charlesklewicki]

Hi all,

I'm currently working on a project to simulate heat transfer through air in a confined space between a heating element and an evaporator and I am having trouble implementing the fanPressureJump BC. So far I have been able to setup my mesh and now I am working on adding the fanPressureJump BC to represent the evaporator blower.

I have followed the TJunctionFan tutorial and I was able to modify the tutorial by adding my own custom mesh and I get reasonable results when running pimpleFoam. The issue I am having is that when I try to switch the solver to buoyantPimpleFoam in order to incorporate buoyancy effects the fanPressureJump BC seems to cease functioning. I used the hotRoom tutorial as a starting point for the constants, fvSolution, fvSchemes, and controlDict files. I have attached images of the U magnitude results after 0.3 s from pimpleFoam and buoyantPimpleFoam and I have also attached a zipped file of the case.

Any help is much appreciated.

[charlesklewicki]

I was able to resolve this issue by applying the fanPressureJump BC on the p_rgh file instead of the p file.

[ShaneheSSSS]

hello,I encounter this problem as well，do you mean applying fanPressureJump BC on the system/createBafflesDict as well as the 0/p_rgh file?

Thank you in advance！

[esma]

I appreciate your feedback as it saved me.
I've been struggling with a cyclic patch for the fan to work in buoyantSimpleFoam.
after applying topoSet and createBaffle to produce the patch, the solver automatically assigns the pressure jump to "p" and not "p_rgh". I copied the cyclic patch from p to p_rgh and now is functioning.

p_rgh
----------
cyclicFaces_master
{
type fan;
patchType cyclic;
jump uniform 0;
value uniform 0;
jumpTable constant 15;
}
cyclicFaces_slave
{
type fan;
patchType cyclic;
value uniform 0;
}