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3d Pipe Flow.

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Old   March 17, 2006, 14:05
Default 3d Pipe Flow.
Sean Cody
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I am modelling 3d pipe flow and the at my outflow the velocity vectors are turning around rather than flowing through the outflow face. I think it may be a problem with specifications i have set for iterating but i'm not sure. Any suggestions?

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Old   March 17, 2006, 21:43
Default Re: 3d Pipe Flow.
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extend the outlet, reversed flow is an indication of not reaching the fully developed state
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Old   March 18, 2006, 07:23
Default Re: 3d Pipe Flow.
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Yes Ahmed is correct. Make sure you have the length to be atleast 40D to obtain reasonable results if you are using an outflow BC.

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Old   March 18, 2006, 10:50
Default Re: 3d Pipe Flow.
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Did you first try a 2d flow ?
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