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PETSc Error When Increased mesh size "Rank deficient least squares fit" #285

@salamlobad

Description

@salamlobad

Error occurs when increasing mesh size in input file attached below which used the following cad model of the peregrine motor combustion chamber.

The error is copy pasted below:

[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[0]PETSC ERROR: Rank deficient least squares fit, indicates an isolated cell with two colinear points
[0]PETSC ERROR: See https://petsc.org/release/faq/ for trouble shooting.
[0]PETSC ERROR: Petsc Development GIT revision: v3.17.1-249-g89669be4d2 GIT Date: 2022-05-02 13:41:30 +0000
[0]PETSC ERROR: /home/salaml/ablate/cmake-build-opt-ablate/default/ablate on a arch-ablate-opt named DESKTOP-89VT3N5 by salaml Mon Jun 13 14:48:40 2022
[0]PETSC ERROR: Configure options PETSC_ARCH=arch-ablate-opt --download-mpich --download-fblaslapack --download-ctetgen --download-egads --download-fftw --download-hdf5 --download-metis --download-ml --download-mumps --download-netcdf --download-p4est --download-parmetis --download-pnetcdf --download-scalapack --download-slepc --download-suitesparse --download-superlu_dist --download-triangle --with-slepc --download-zlib --with-libpng --download-tchem --download-opencascade --with-debugging=0
[0]PETSC ERROR: #1 PetscFVLeastSquaresPseudoInverseSVD_Static() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2023
[0]PETSC ERROR: #2 PetscFVComputeGradient_LeastSquares() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2090
[0]PETSC ERROR: #3 PetscFVComputeGradient() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:1658
[0]PETSC ERROR: #4 PetscFVLeastSquaresPseudoInverseSVD_Static() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2023
[0]PETSC ERROR: #5 PetscFVComputeGradient_LeastSquares() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2090
[0]PETSC ERROR: #6 PetscFVComputeGradient() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:1658
[0]PETSC ERROR: #7 PetscFVLeastSquaresPseudoInverseSVD_Static() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2023
[0]PETSC ERROR: #8 PetscFVComputeGradient_LeastSquares() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2090
[0]PETSC ERROR: #9 PetscFVComputeGradient() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:1658
[0]PETSC ERROR: #10 PetscFVLeastSquaresPseudoInverseSVD_Static() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2023
[0]PETSC ERROR: #11 PetscFVComputeGradient_LeastSquares() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2090
[0]PETSC ERROR: #12 PetscFVComputeGradient() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:1658
[0]PETSC ERROR: #13 PetscFVLeastSquaresPseudoInverseSVD_Static() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2023
[0]PETSC ERROR: #14 PetscFVComputeGradient_LeastSquares() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2090
[0]PETSC ERROR: #15 PetscFVComputeGradient() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:1658
[0]PETSC ERROR: #16 PetscFVLeastSquaresPseudoInverseSVD_Static() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2023
[0]PETSC ERROR: #17 PetscFVComputeGradient_LeastSquares() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2090
[0]PETSC ERROR: #18 PetscFVComputeGradient() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:1658
[0]PETSC ERROR: #19 PetscFVLeastSquaresPseudoInverseSVD_Static() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2023
[0]PETSC ERROR: #20 PetscFVComputeGradient_LeastSquares() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:2090
[0]PETSC ERROR: #21 PetscFVComputeGradient() at /home/salaml/petsc/src/dm/dt/fv/interface/fv.c:1658

CombustionChamberV2Input.zip

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