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Reading the patch labels

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Old   August 3, 2017, 10:46
Default Reading the patch labels
  #1
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Vedamt Chittlangia
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Hello,

I need patch ID for some calculations in the kEpsilon.C .
I found on forum that patch can be accessed like:
Code:
label patchID = patch.boundaryMesh.lookupPatchID("patchName")
My questions are:
1. when I am compiling the EXE for this, the patchName does not exist as such since I have not run any solver such as simpleFoam or pisoFoam, or kEpsilon file does not have the mesh details. So, how will it get the patchID given the patchName.
2. I get an error: 'patch' was not declared in this scope
3. How can I read patchID as I read other constants such as Cmu_, sigmaK_ etc from coeffDict?
I tried:
Code:
kEpsilon::kEpsilon(..,...,..):RASModel(....),
inletID
    (
        dimensioned<label>::lookupOrAddToDict
        (
            "inletID",
	    1
        )
    )
I get the error: no matching function for call to 'Foam::dimensioned<int>::lookupOrAddToDict(const char [8], int)'

So, how should I get the labelID for the patch names I have described in blockMeshDict?
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Old   August 3, 2017, 14:14
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Sugajen
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Hi Vedamt,

Code:
string patchName = mesh.boundaryMesh()[patchI].name();
Is this what you're looking for?
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Old   August 3, 2017, 14:29
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Vedamt Chittlangia
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vcvedant is an unknown quantity at this point
No. I my idea is to get the patchID from the patchName.
But i don't have patchName available in the RASModel.C or kEpsilon.C
So, I want to get that information from the user.
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Old   August 3, 2017, 14:37
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Sugajen
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I see what you say. Do have a look at this,
Code:
forAll(mesh.boundaryMesh(), patchI)
{
	string patchNameNeeded = "patchNameInBlockMesh";
	string patchName = mesh.boundaryMesh()[patchI].name();	
	if (patchName.find(patchNameNeeded) != std::string::npos)  // checks if "patchNameInBlockMesh" is in the current patchName
	{
	//
	}
}
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Old   August 3, 2017, 14:59
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Vedamt Chittlangia
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vcvedant is an unknown quantity at this point
Thank you Sugajen, this explains well what I needed.

I will post in couple of days when I am able to run the case using this implementation.
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kepsilon, label, lookup error, mesh, patch

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