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-   -   governing equations for liquid mixing with free surface? (https://www.cfd-online.com/Forums/main/68702-governing-equations-liquid-mixing-free-surface.html)

 phsieh2005 September 29, 2009 12:07

governing equations for liquid mixing with free surface?

Dear CFD experts,

I would like to model mixing of two liquids with free surface, ie, two liquids + air. The free surface will be modeled by VOF.

I know how to derive single liquid + air using VOF, but, how to derive the governing equation with two liquids (two VOF?) mixing with air presents?

Is there any literatures in this area?

It will be appreciated if someone can shed some light on this.

Pei

 Figd84 October 5, 2009 09:14

Did you actually did the 2 VOF calculation?? is it inner channel flow?? or open channel?? I´m working on an vacuum valve instaled on a water pipeline, and haver some problems solving it with VOF.

 CFDtoy October 6, 2009 11:58

literature ..

Here you go

Simulation of Multiphase Flows in Complex Geometry Using a Hybrid Method Combining the Multi-Fluid and the Volume-of-Fluid (VOF) Approaches, Alajbegovic, A., Han. J., FEDSM2002-31153, Montreal, Quebec, 2002.

hope this helps :)

Quote:
 Originally Posted by phsieh2005 (Post 230859) Dear CFD experts, I would like to model mixing of two liquids with free surface, ie, two liquids + air. The free surface will be modeled by VOF. I know how to derive single liquid + air using VOF, but, how to derive the governing equation with two liquids (two VOF?) mixing with air presents? Is there any literatures in this area? It will be appreciated if someone can shed some light on this. Pei

 phsieh2005 October 6, 2009 20:37

Thanks again CFDtoy!

HI, Figd84,

I have liquid A inside a cup, then, a liquid jet (liquid B) shoot into the cup. I am interested in mixing of the two liquids.

I am not quite sure how to derive the governing equations.

Pei

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