turbulence model
 

Is there any 2-equation turbulence model code in FORTRAN (preferably free) so I can implement it into my CFD code?

If anybody can help, much appreciated.

Dan

Re: turbulence model
 

See Peric's Code avaliable online. Has k-e and k-w coded in fortran.

Anindya

Re: turbulence model
 

Thanks for your help. I did a quick search and found this site:

ftp://ftp.springer.de/pub/technik/peric/

but, I couldn't find any turbulence modeling code in it.

Could you tell me where I can find it.

Appreciate it.

Dan

Re: turbulence model
 

Your question is a bit strange. A turbulence model is not an isolated bit that you stick onto your CFD code. Rather you are going to be solving an additional equation for turbulence kinetic energy (k) and, for example, dissipation rate of k (epsilon), in addition to velocity components and pressure. So they will part of your iteration cycle.

Moreover, if you have an existing code that doesn't have any turbulence model you will probably need to modify your velocity equations to the Reynolds-averaged version (RANS), i.e add the Reynolds stresses.

Maybe you need to read a little more about turbulence modeling.

Sharaf

Re: turbulence model
 

Thanks Sharaf. My code does have a turbulence model but a very simple one (0 equation). By using a more sophisticated model, say a 2-layer one, I want to get better estimations for those parameters you mentioned. I believe it is possible to replace my model with a new one. It might just take a few days to match up the parameters and then get the first run.

So, now if you or anybody else can give me better advice on this, would be a great lift. My code is based on a control volume algorithm.

Dan

Re: turbulence model
 

Sorry, I meant *Finite Volume*

Dan

Re: turbulence model
 

You have gone to the correct website. There, go to the folder 2dgt. There you will find the directories for both keps and komega codes. Both the codes there are probably called caffa.f

Hope it helps.

Anindya