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-   -   overflow problem (http://www.cfd-online.com/Forums/cfx/23327-overflow-problem.html)

bruno November 24, 2006 08:11

overflow problem
 
i'm having problems with overflow in solver cfx!

my simulation is transient and i set many times the boundary conditions and initial conditions to try to get goos results.

my turbulence model is LES and my simulation is an atmospheric dispersion aroun a bulding.

who knows about problems like this in transient simulations?

is this problem with bad mesh, or the conditions???

thanks a lot

bruno


Johnny November 24, 2006 11:23

Re: overflow problem
 
Yes, your problem is probably a bad mesh and/or an inadequate timestep. There's no way to know for sure with the information you provided.

Glenn Horrocks November 26, 2006 17:28

Re: overflow problem
 
Hi,

Doing a LES simulation when you have not got the basics under control is a bad idea. I recommend you switch to a RANS turbulence model (SST or k-epsilon).

Glenn Horrocks


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