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Old   August 7, 2003, 03:42
Default Free surface
Jennifer Haque
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I am trying to use the free surface model available in CFX5.5.1. Has anyone used it and can they give me any advice on using the model. I am experiencing divergence problems. If anyone has any suggestions, please get back to me.

Regards Jennifer
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Old   August 7, 2003, 03:47
Default Re: Free surface
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Hi Jennifer,

What timesteps are you using?

You tend to have to use small timesteps for free-surface problems.

Are you running steady-state?

It is a good idea to use the timestep for VF as 1/10 of the timesteps for everything else.

Try, dt=1/f and dt=1/10f for VF, f being revolution time for your mixing vessel.
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