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How can I modify config(controlDict, fvSolution, ... etc) to use AmgXWrapper?

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Old   July 25, 2023, 04:56
Question How can I modify config(controlDict, fvSolution, ... etc) to use AmgXWrapper?
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STK
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Seungtae Kim
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Hellow foamers,

I'm seeking the way to solve CHT(conjugate heat transfer) with GPU acceleration.

My first attempt is using RapidCFD. But chtMultiRegionFoam(originally commented out) in RapidCFD cannot handle compressible::turbulentTemperatureCoupledBaffleMix ed; boundary condition (which is used in OpenFOAM-2.3.x chtMultiRegionFoam tutorial)

And other thread said cudasolver in foam-extended also suffers lack of coupled temperature BC

Thus I try OpenFOAM-PETSc4FOAM-AmgXWrapper as shown in slide 4 following link: https://wiki.openfoam.com/images/a/a..._Martineau.pdf

I can successfully call petsc thanks to the tutorial in PETSc4FOAM source. But I have absolutely no idea how to call AmgX using AmgXWrapper.

Usage page in AmgXWrapper repository gives several command to call AmgXWrapper in PETSc application(https://github.com/barbagroup/AmgXWr...r/doc/usage.md) but I'm not sure where to put those lines like "AmgXSolver solver;" maybe under the petsc dictionary in fvSolution?
Should I add libs (libamgxwrapper); in controlDict to call it?

Is there any test case such that I can check proper configurations?
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amgx, amgxwrapper, gpu, openfoamv2306, petsc4foam

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