Please could you help me with this error?
I am doing a RANS simulation, with k-w SST model and no wall function, in the compressible module, using v7.1-alpha with GUI. The case is about rotating flow in a rotating cavity.
After about 30000 iterations, the solution crashed with an error. The crash was because negative values of internal energy detected in several cells. I tried to decrease timestep, the case seems to go on running for some iterations, but soon ended with the same error.
The error message in run_solver.log is shown below. The XML, mesh, run_solver.log file are attached.
How could I deal with this error and go on calculating? Thank you very much for checking!
/home/ruonanwang/code_saturne_master_git/code_saturne-master/src/cfbl/cs_cf_thermo.c:248: Fatal error.
Error in thermodynamics computations for compressible flows
Negative values of the internal energy were encountered in 4 cells.
1: 0x7f88d222aa23 <cs_cf_check_internal_energy+0x2e3> (libsaturne-7.1.so)
2: 0x7f88d22202ac <cfener_+0x1391> (libsaturne-7.1.so)
3: 0x7f88d1d558e0 <scalai_+0x633> (libsaturne-7.1.so)
4: 0x7f88d1d60217 <tridim_+0x435b> (libsaturne-7.1.so)
5: 0x7f88d1bd12ef <caltri_+0x1d0c> (libsaturne-7.1.so)
6: 0x7f88d2cbb9aa <main+0x6fa> (libcs_solver-7.1.so)
7: 0x7f88d0fc9b97 <__libc_start_main+0xe7> (libc.so.6)
8: 0x564f9f3ead7a <_start+0x2a> (cs_solver)
End of stack