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-   -   FLuent CAvitation Model requires Turbulence? (http://www.cfd-online.com/Forums/fluent/43228-fluent-cavitation-model-requires-turbulence.html)

CFDtoy January 2, 2007 18:32

FLuent CAvitation Model requires Turbulence?
 
Hello

Can fluent's mixture model be used without turbulence..if so ..please check the rate of evaporation and condensation rates where Characteristic velocity = sqrt(turbulent kinetic energy)..if TKE =0 (no turbulence considered) source terms are zero ?!

If I use laminar flow, how is the source computed?

Thanks

CFDtoy

mateus January 12, 2007 02:57

Re: FLuent CAvitation Model requires Turbulence?
 
I guess you should consider turbulent flow...I don't remember seeing laminar flow with cavitation, yet.

MAteus

CFDtoy January 12, 2007 11:27

Re: FLuent CAvitation Model requires Turbulence?
 
Thanks for your reply MA

If I do cavitation with no turbulence..it still works ! i dont knw how they manage to get the evaporation and condensation working without the "k" in their equation sounds interesting..

Many of the works in cav actually use a lam assumption since the cavitation effective viscosity >> turbulent effects...so ..kinda neglected.

But, anyways, I was wondering about fluent's ability...now with lam i can see it works but ..jus cant find how !

CFDtoy


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