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-   -   CAVITATION(what turbulence model is better) (http://www.cfd-online.com/Forums/fluent/31926-cavitation-what-turbulence-model-better.html)

ROOZBEH August 2, 2003 03:52

CAVITATION(what turbulence model is better)
 
Hi; What turbulence model is better for cavitation modelling? Dose has anyone an experience with K-w model?

ccc August 3, 2003 10:29

Re: CAVITATION(what turbulence model is better)
 
hi, roozbeh

I have a little experience on cavitation simulation. One of my labmates did these by using fluent and i by StarCD. The results are similar and however, the size of cavotatopm is much smaller than the one observed in the experiments.

mateus August 4, 2003 08:37

Re: CAVITATION(what turbulence model is better)
 
Hi!

I'm back from vacation:) So: - turbulence model...usually k-epsilon model with some modifications is used (the plain one does not predict reentrant jet and consequently cavitation cloud separation). - bubble number density....as i said before, nobady really knows that one (It seems that the number 10^7 to 10^9 and bubble radius 3*10^-5 should be ok) - literature...just put cavitation and modellind in google.....you'll get many good papers out...

REGARDS

mateus

ROOZBEH August 9, 2003 10:04

Re: CAVITATION(what turbulence model is better)
 
Hi; I am very happy to see your response. I have many problems and I want to ask you about them. Can I connect you by e-mail(or in this site if you want)? Can you check your mail box please!

mateus August 9, 2003 12:59

Re: CAVITATION(what turbulence model is better)
 
Hi!

No problem - contact me by e-mail....Hope I will be able to help you....

MATEUS

fredrikw August 12, 2003 03:18

Re: CAVITATION(what turbulence model is better)
 
Hi!

As I'm also simulating cavitation I would be interested in knowing what turbulence model to use etc. Please share your knowledge!

/Fred


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