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-   -   help: which VOF model (http://www.cfd-online.com/Forums/fluent/30271-help-vof-model.html)

mystic_cfd September 5, 2002 10:28

help: which VOF model
 
hi there

i am doing stirred tank simulations and need to take the liquid surface into account. i don't require sophisticated surface tracking, just something which is robust and will work on a (coarse) grid with sliding mesh.

any experience or recommendations would be very welcome.

thanx

Laika September 5, 2002 10:49

Re: help: which VOF model
 
this should be no problem. My experience is that sliding mesh + vof takes very very very long to converge to a physical meaningful solution. Solution: run a moving reference frame model in steady state, and, if necessary, switch tot sliding mesh after convergence.

good luck,

Laika, back in orbit

alain September 6, 2002 05:41

Re: help: which VOF model
 
hi,

In my experience, VOF isn't very robust and won't works on a too coarse grid (results may be completly unphysical).

If you need to take into account that there is a free surface but it's deformation is small enought to don't interfere with flow field near the agitator you can use a free slip wall.

Best regards


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