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flow past a missle: how to solve divergence?

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Old   September 9, 2007, 22:53
Default flow past a missle: how to solve divergence?
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I am now using Spalart almarmas + 2nd order upwind to do simulations in FLUENT. but it is very fast to diverge after just a few steps of iterations. My mach number is around 2 and Reynolds number in order of 105. So how to solve the divergence problem? How can i get some reasonable initiation field for the iterations to continue?

Thank you very much in advance!
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