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

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

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