The Error when running the simulation
Posted: Mon Sep 28, 2015 11:39 am
Hello Users,
When I wan trying to run the simulation withe very thin viscous layer. K-omega-sst model was chosen and the inner cirulation was set at the inlet.
I came across the following error:
/home/martian/APP.SRC/code_saturne-4.0.2/src/alge/cs_multigrid.c:2780: Fatal error.
algebraic multigrid [Pressure]: divergence after 21 cycles:
initial residual: 2.5793e-03; current residual: 1.3719e+02.
The mesh is generated by using the Salome 7.6.0. The total height of the viscouse layer is 0.0005m, containing 15 layers with the expansion ratio as 1.2.
I did not come across the similar error when the total height of visocus layer is thicker than 0.001m. However the simualtion diverges as the yplus is higher than 1.
I would like to understand what the error is about. It si related to my mesh quality or the setting in the simualtion or both.
The listing log is attached.
Waiting for your reply.
Thanks in advance,
Yu.
When I wan trying to run the simulation withe very thin viscous layer. K-omega-sst model was chosen and the inner cirulation was set at the inlet.
I came across the following error:
/home/martian/APP.SRC/code_saturne-4.0.2/src/alge/cs_multigrid.c:2780: Fatal error.
algebraic multigrid [Pressure]: divergence after 21 cycles:
initial residual: 2.5793e-03; current residual: 1.3719e+02.
The mesh is generated by using the Salome 7.6.0. The total height of the viscouse layer is 0.0005m, containing 15 layers with the expansion ratio as 1.2.
I did not come across the similar error when the total height of visocus layer is thicker than 0.001m. However the simualtion diverges as the yplus is higher than 1.
I would like to understand what the error is about. It si related to my mesh quality or the setting in the simualtion or both.
The listing log is attached.
Waiting for your reply.
Thanks in advance,
Yu.