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Forum: CFX

June 9, 2010, 18:35

Replies: 6

Forward facing step simulaiton

Views: 2,667

Posted By ghorrocks

Try a smaller physical time step to start things...

Try a smaller physical time step to start things off. Or you may need Local Timescale factor to start it going.

Also try using the previous simulations as initial guesses. That will help a lot.

Forum: CFX

June 9, 2010, 07:52

Replies: 6

Forward facing step simulaiton

Views: 2,667

Posted By ghorrocks

OK, thanks. Here's some suggestions: - don't...

OK, thanks. Here's some suggestions:
- don't smooth the grid in ICEM. for a forward facing step you should get a perfectly orthogonal grid with no smoothing.
- If it blows up in the first time step...

Forum: CFX

June 9, 2010, 06:23

Replies: 6

Forward facing step simulaiton

Views: 2,667

Posted By ghorrocks

You should be able to make a very high quality...

You should be able to make a very high quality hex grid for this simulation. Not only will that improve accuracy, speed the simulation and use less memory, but it will also make obtaining convergence...

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