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2nd order equations not solving well

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Old   May 15, 2008, 15:56
Default 2nd order equations not solving well
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Paul
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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?
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Old   May 16, 2008, 17:52
Default Re: 2nd order equations not solving well
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red lemon
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run rsm and presto or bfw for pressure and also try double precision solver. also ramp up flow rate gradually.
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