Navier-Stokes solver convergence issues
Posted: 11 Jan 2016, 08:52
Hello,
I am having some problems with the Navier-Stokes solver. I would like to perform a simple diagnostic test to apply pressure to the top of a cube of ice and get the stresses as an output. I have modified the ForceToStress test case to create a simple example. However, if I replace the ForceToStress solver with the Navier-Stokes solver it won't run. I keep getting this error - ERROR:: IterSolve: Failed convergence tolerances.
I have tried increasing the convergence tolerance but if I make it too large the answers won't mean anything and I don't think tight tolerances are the cause of the problem.
I have been trying to do essentially the same thing in a few different ways with different .sif files and different meshes but I keep hitting this problem. What am I missing?
I am having some problems with the Navier-Stokes solver. I would like to perform a simple diagnostic test to apply pressure to the top of a cube of ice and get the stresses as an output. I have modified the ForceToStress test case to create a simple example. However, if I replace the ForceToStress solver with the Navier-Stokes solver it won't run. I keep getting this error - ERROR:: IterSolve: Failed convergence tolerances.
I have tried increasing the convergence tolerance but if I make it too large the answers won't mean anything and I don't think tight tolerances are the cause of the problem.
I have been trying to do essentially the same thing in a few different ways with different .sif files and different meshes but I keep hitting this problem. What am I missing?