Multiphase Simulation giving wrong results

niazaliahmed · June 16, 2011, 04:34

I have a 2 D Rectangle. The geometry has been attached. Hexane flows inside the volume from Inlet and has a volume fraction of 1. Air is present initially inside the volume having volume fraction 1.

The following optional modules have been selected

Segregated Isothermal

Gravity

Required Result
The actual result should be hexane liquid reaching the bottom and filling up the volume from bottom.

Simulation Result
The simulation result shows that the hexane liquid is not reaching the bottom but residuals are existing everywhere in the volume.

Does anyone has any idea whats wrong?

sebastianh · June 16, 2011, 07:34

Use the vof and the surface tension model plus a very fine hexaeder mesh.
And implicit unsteady... maybe constant density for both your phases, depends on your problem.
That should do it.

niazaliahmed · June 17, 2011, 01:41

Thanks sebastianh. I would try that today.

PS : That worked. Thanks..

June 17, 2011, 01:41		#3
niazaliahmed New Member Niaz Ali Ahmed Join Date: Jun 2010 Posts: 14 Rep Power: 16	Thanks sebastianh. I would try that today. PS : That worked. Thanks.. Last edited by niazaliahmed; June 18, 2011 at 08:10. Reason: For PS

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June 16, 2011, 07:34		#2
sebastianh New Member Sebastian H. Join Date: Apr 2011 Posts: 7 Rep Power: 15	Use the vof and the surface tension model plus a very fine hexaeder mesh. And implicit unsteady... maybe constant density for both your phases, depends on your problem. That should do it.