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Old   December 20, 2023, 19:19
Default mappedFlowRate
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Hello every one,

I am trying to use mappedFlowRate B.C. in my simulation. I've used mapped B.C. for velocity before. However, I am not sure how to set the "mappedFlowRate" B.C. The only description for this boundary condition I found form OF docs reads as:


<patchName>
{
type mappedFlowRate;
phi phi;
rho rho;
neigPhi phi;
value uniform (0 0 0); // placeholder
}

I use this for my "inlet" patch and set this patch in polyMesh/Boundary
dictionary as:


inlet
{
type mappedPatch;
sampleMode nearestPatchFace;
offset (10 0 0);
nFaces 405;
startFace 28295676;
}

There are two problem in this regard:
1) why the "value" in "value uniform (0 0 0); // placeholder",
is described as "place holder" which is a value to be over written
in later iteration and does not make sense to me.
2) the error I got for this configuration reads as:
supply either a patchName or a coupleGroup for patch inlet in region region0


I appreciate your advice if faced the same the problem in setting such B.C.

Sina
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