[rietuk]

Hi,

I am simulating nozzle flow.
Initially I used a polyhedral mesh and the solution converged but the mesh was not aligned with the flow. I then used a trimmer mesh, firstly with volumetric control to increase the resolution along the jet centreline but the solution diverged. This is with the same boundary conditions and initial solution based on the polyhedral mesh and a further simulation starting from no solution.
I thought it was an issue with the volumetric control therefore started again, used a trimmer mesh, refined by field function. The mesh looked good but again the solution diverged.
Are there any obvious reasons why a refinement of trimmer mesh would cause the solution to diverge? Is there another way to refine my mesh along the jet centreline?
Thanks for your help