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why velocity keeps rising??

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Old   July 1, 2008, 13:50
Default why velocity keeps rising??
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arkuk
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Hi

I am running LES simulation with periodic boundaries. I am monitoring velocity at a point in my domain. I observe steady increase in my velocity. Why is that?? Any input will be welcome.

Thank you
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Old   July 3, 2008, 18:57
Default Re: why velocity keeps rising??
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agg
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If your scheme is not energy conserving, instabilities could cause one component say u-velocity to rise and then to satisfy divergence the other two components also increase. And the downhill begins.

You can look up papers on "energy conserving schemes" for more information.
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