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-   -   2nd order equations not solving well (http://www.cfd-online.com/Forums/fluent/48248-2nd-order-equations-not-solving-well.html)

Paul May 15, 2008 15:56

2nd order equations not solving well
 
Does anybody have any tips for getting 2nd order equations to converge? I'm modeling cyclones and from what I see the data appears to be better than the first order, but it won't actually converge.

I've been running on both RSM and KE steady state models. I started iterating after the first order equations converged.

Any tips?

red lemon May 16, 2008 17:52

Re: 2nd order equations not solving well
 
run rsm and presto or bfw for pressure and also try double precision solver. also ramp up flow rate gradually.


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