Could you please help me with this error?
I am running a new case using the new feature version 7.1. But one error occurred at the first time step: Flexible Conjugate Gradient: error (divergence) solving for Pressure
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Conjugate Gradient [Pressure:coarse:10]: divergence after 142 iterations:
initial residual: 8.3927e+00; current residual: 1.0299e+05
Flexible Conjugate Gradient [Pressure]: divergence after 205 iterations:
initial residual: 2.9481e-04; current residual: 1.3534e+02
Flexible Conjugate Gradient [Pressure]: divergence
fallback from Multigrid to Jacobi (diagonal) preconditioning
for re-try and subsequent solves.
Flexible Conjugate Gradient [Pressure]: divergence after 656 iterations:
initial residual: 2.9481e-04; current residual: 1.0228e+02
/home/ruonanwang/code_saturne_7.1.0/code_saturne-7.1.0/src/alge/cs_sles_it.c:4874: Fatal error.
Flexible Conjugate Gradient: error (divergence) solving for Pressure
I tried all 4 different "Gradient reconstruction type", I also tried to initialize with the inlet velocity and temperature, but all ended up with this same error.
I wonder if you know what might cause this error and the possible solutions?
The log, xml and subroutines used are attached. The mesh is too large to upload but here is a link to download it. Thank you very much!
https://drive.google.com/file/d/10fPEZg ... sp=sharing
Best regards,
Ruonan