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February 21, 2011, 14:47 |
How small to choose the timestep?
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#1 |
New Member
Kristin Kerst
Join Date: Jan 2011
Posts: 11
Rep Power: 15 |
Hello everyone,
I try to simulate a static mixer. The timestep, I calculated following: Co = 0.01 u = 0.0062 delta x = 0.00025 m Co = (u * delta t)/ delta x --> delta t = 0.0004 s With "simpleFoam" everything was ok, but I would like to use the solver "icoFoam". With icoFoam I took delta t = 0.00001 s, but still was not ok. I run it on a cluster, because on my notebook it lasted 8 hours to do the first 0,5 seconds. I choosed the endTime 12. Maybe it also could be another adjustment in icoFoam. If somebody has experience with this solver, it would be great. My blockMeshDic: |
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