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-   -   Model solver reliability (http://www.cfd-online.com/Forums/fluent/80027-model-solver-reliability.html)

Nicolas Freuville September 13, 2010 09:49

Model solver reliability
 
Hi everyone,
I'm a newbie with Fluent and I've to simulate a flow in a chamber with compressive gas and slow motion (a few mm/s).
I made a simulation with the "pressure based" model and another with the "density based" model. I see some velocity difference (~5%) between the 2 models.How can I minimize this difference; which parameters should I use for the discretization in the panel Solve/controls/solution for the pressure, the density ...
I know that the convergence with the pressure based model is much more quickly, but I want to be sure that I can use these results.


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