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December 26, 2005, 10:49 |
IC and BC for slug flow
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#1 |
Guest
Posts: n/a
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Dear all,
To simulate the flow of a slug through a mini channel, I have adpoted the VOF model with a constant surface tension. I have also assumed the flow to be laminar For BC: I have specified a velocity inlet, a outflow and non-slip wall condition. For IC: I have patch a gas bubbles cylindrical in shape in the channel (volume fraction 1) Square channel of size 2 x 2 X 50 mm grid size of 26 X 26 X 635 I will get an error message of "Too many sub time step. The velocity field is probably diverging....... Reduce time step" when im interating. May i know what is the problem? I have tried to reduce the under-relaxation factors but was unable to get satisfactory results. Any suggestions will be appreciated Thanks in advance. |
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