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duct flow using SIMPLE

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Old   January 22, 2003, 22:18
Default duct flow using SIMPLE
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I have to solve a variable density flow in a pipe along with the energy equation (let's say constant pipe wall temperature and fixed inlet temperature). I obseve lots of unstability for the transient part. Does anyone know why? Anybody with a similar code so I can verify my code?

Thanks a lot
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