Suggestion for correct multiphase model

Dave_88 · January 12, 2016, 17:19

Hello everyone.
I am currently facing a CFD-simulation and I have still uncertainties concerning the correct mixture modelling.

As a geometry I have a gas mixer with a venturi shape. In the smallest area (in the middle of the geometry in axial direction) are drillings, which allow gas to enter the system. At the venturi inlet I have simple air sucked. I want to create a gas-air-mixture.

I want to simulate the flow with the two different fluids (subsonic, Ma,max approximately 0.3-0.5) but am unsure about the correct multiphase model. I tried "mixture"-model, but that forbids the use of multiple (>1) compressible fluids.

Do you have any recommondations on this topic?

Any comment is much appreciated. Thank you in advance.

Regards Dave

Dave_88 · January 16, 2016, 04:53

Nobody? Any help is much appreciated.

January 12, 2016, 17:19	Suggestion for correct multiphase model	#1
Dave_88 New Member Dave M. Join Date: Aug 2014 Location: Koblenz, Germany Posts: 14 Rep Power: 12	Hello everyone. I am currently facing a CFD-simulation and I have still uncertainties concerning the correct mixture modelling. As a geometry I have a gas mixer with a venturi shape. In the smallest area (in the middle of the geometry in axial direction) are drillings, which allow gas to enter the system. At the venturi inlet I have simple air sucked. I want to create a gas-air-mixture. I want to simulate the flow with the two different fluids (subsonic, Ma,max approximately 0.3-0.5) but am unsure about the correct multiphase model. I tried "mixture"-model, but that forbids the use of multiple (>1) compressible fluids. Do you have any recommondations on this topic? Any comment is much appreciated. Thank you in advance. Regards Dave

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January 16, 2016, 04:53		#2
Dave_88 New Member Dave M. Join Date: Aug 2014 Location: Koblenz, Germany Posts: 14 Rep Power: 12	Nobody? Any help is much appreciated.