Simulating air injecting to water in a tank?

March 12, 2009, 14:54

Can STAR-CD simulate air injecting thru. a tube to water in a tank? I believe this is a problem of fluid interaction or fluid mixing, not multiphase flow.

If connot, which CFD code can handle this?

Thanks, HW

March 12, 2009, 19:15

since you have 2 phases: air & water, it is a multiphase flow problem

ping · March 15, 2009, 23:44

The standard VOF model in either STAR-CD or STAR-CCM+ will handle this case - you need to keep the cell sizes down in the order of the tube size and resulting bubbles to capture the bubbles well. Otherwise try the Eulerian-Eulerina model.

March 12, 2009, 14:54	Simulating air injecting to water in a tank?	#1
Howard Wang Guest Posts: n/a	Can STAR-CD simulate air injecting thru. a tube to water in a tank? I believe this is a problem of fluid interaction or fluid mixing, not multiphase flow. If connot, which CFD code can handle this? Thanks, HW

March 12, 2009, 19:15	Re: Simulating air injecting to water in a tank?	#2
Roger Moore Guest Posts: n/a	since you have 2 phases: air & water, it is a multiphase flow problem

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March 15, 2009, 23:44		#3
ping Senior Member Ping Join Date: Mar 2009 Posts: 556 Rep Power: 20	The standard VOF model in either STAR-CD or STAR-CCM+ will handle this case - you need to keep the cell sizes down in the order of the tube size and resulting bubbles to capture the bubbles well. Otherwise try the Eulerian-Eulerina model.