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sunagra27 May 9, 2022 02:38

Unable to set source and target faces
 
Hi,

I am trying to work on patch to patch coupled boundary condition. I came across coupled boundary condition namely AMI, CyclicAMI. I am new to this part.

1. Does AMI and CyclicAMI work only for dynamic meshes?
2. I am trying to interpolate the dirichlet boundary conditon values on one patch to adjacent patch using AMI boundary condition. (The mesh does not move and still I have tried to use it).
3. I am facing an issue stating as mentioned in title as "Unable to set source and target faces".

My boundary file is as follows as present in constant/polymesh/boundary:


Code:

3
(
    AMI_patch1
    {
        type            cyclicAMI;
        inGroups          1(cyclicAMI);
        matchTolerance 0.001;
        transform          noOrdering;
        neighbourPatch        AMI_patch2;
        nFaces          7113;
        startFace      730746;
        separationVector (0.005 0 0);
    }
    chestwall
    {
        type            patch;
        nFaces          5196;
        startFace      737859;
    }
    AMI_patch2
    {
        type            cyclicAMI;
        inGroups          1(cyclicAMI);
        matchTolerance        0.001;
        transform          noOrdering;
        neighbourParch        AMI_patch1;
        nFaces          9334;
        startFace      743055;
        separationVector (-0.005 0 0);
    }
)

* I am working with chtMultiRegionSimpleFoam, due to this, the region boundary corresponding to the AMI patches are also same.

Error

Code:

AMI: Creating addressing and weights between 7113 source faces and 9334 target faces
--> FOAM Warning :
    From function void Foam::AMIMethod<SourcePatch, TargetPatch>::checkPatches() const [with SourcePatch = Foam::PrimitivePatch<Foam::face, Foam::SubList, const Foam::Field<Foam::Vector<double> >&>; TargetPatch = Foam::PrimitivePatch<Foam::face, Foam::SubList, const Foam::Field<Foam::Vector<double> >&>]
    in file lnInclude/AMIMethod.C at line 57
    Source and target patch bounding boxes are not similar
    source box span    : (0.163847 0.1670128 0.08645282)
    target box span    : (0.2068839 0.1798336 0.08224967)
    source box          : (0.003686016 -0.0002872496 0) (0.167533 0.1667256 0.08645282)
    target box          : (0.07743542 -0.006471181 0) (0.2843193 0.1733624 0.08224967)
    inflated target box : (0.0631258 -0.0207808 -0.01430962) (0.2986289 0.187672 0.09655929)


--> FOAM FATAL ERROR:
Unable to set source and target faces

    From function void Foam::faceAreaWeightAMI<SourcePatch, TargetPatch>::setNextFaces(Foam::label&, Foam::label&, Foam::label&, const boolList&, Foam::labelList&, const Foam::DynamicList<int>&, bool) const [with SourcePatch = Foam::PrimitivePatch<Foam::face, Foam::SubList, const Foam::Field<Foam::Vector<double> >&>; TargetPatch = Foam::PrimitivePatch<Foam::face, Foam::SubList, const Foam::Field<Foam::Vector<double> >&>; Foam::label = int; Foam::boolList = Foam::List<bool>; Foam::labelList = Foam::List<int>]
    in file lnInclude/faceAreaWeightAMI.C at line 287.

FOAM aborting


How does this AMI work and what are the changes need to be made.? For reference, I have attached the surface image, where the left patch contains the dirichlet boundary condition and right patch is the one where the interpolation from dirichlet boundary condition showed happen.

Image source: https://drive.google.com/file/d/1kLj...ew?usp=sharing

Is there a possibility of interpolating one surface patch to another for a static mesh? Open to give the case files.

Thanks and regards,
Sunag R A.

Gavin Tall August 7, 2022 10:06

Did you solve this problem please? I seem to have the same problem now
I have spent a lot of time on this issue and sincerely ask for your help


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