FLuent CAvitation Model requires Turbulence?

January 2, 2007, 18:32

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

January 12, 2007, 02:57

I guess you should consider turbulent flow...I don't remember seeing laminar flow with cavitation, yet.

MAteus

January 12, 2007, 11:27

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

January 2, 2007, 18:32	FLuent CAvitation Model requires Turbulence?	#1
CFDtoy Guest Posts: n/a	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

January 12, 2007, 02:57	Re: FLuent CAvitation Model requires Turbulence?	#2
mateus Guest Posts: n/a	I guess you should consider turbulent flow...I don't remember seeing laminar flow with cavitation, yet. MAteus

January 12, 2007, 11:27	Re: FLuent CAvitation Model requires Turbulence?	#3
CFDtoy Guest Posts: n/a	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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