IC and BC for slug flow
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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