Multiphase Simulation giving wrong results

niazaliahmed · June 16, 2011, 03:34

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, 06:34

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, 00:41

Thanks sebastianh. I would try that today.

PS : That worked. Thanks..

June 17, 2011, 00:41		#3
niazaliahmed New Member Niaz Ali Ahmed Join Date: Jun 2010 Posts: 14 Rep Power: 15	Thanks sebastianh. I would try that today. PS : That worked. Thanks.. Last edited by niazaliahmed; June 18, 2011 at 07:10. Reason: For PS

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Oscilliations in Multiphase simulation	frono	STAR-CCM+	1	April 12, 2011 22:03
Multiphase flow - simulation crashing	yschati	CFX	14	November 16, 2010 17:29
Comparison of 2D simulation results with 3D	Mohit Gupta	Main CFD Forum	0	September 29, 2008 13:04
Gravity g's influence on Simulation Results	Colin	Main CFD Forum	6	November 2, 2003 14:13
graphical handling of simulation results	yf yap	Main CFD Forum	3	February 12, 2001 19:35

June 16, 2011, 06:34		#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.