Dear all, as part of my studies I would like to implement a simple finite volume CFD solver (following the textbook by Ferziger) on an unstructured, distributed mesh. It seems like the DMPlex class with its DMPlex*FVM methods has prepared much of what is needed for such a CFD solver. Unfortunately I couldn't find any examples how all the great solutions can be used that appear to be already implemented in PETSc. Are some basic tutorials available, for example how to solve a simple poisson equation on a DMPlex using PETSc's FVM methods, so that I don't have to reinvent the wheel?
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