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Steady problem and unsteady mode

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Old   March 31, 2005, 21:55
Default Steady problem and unsteady mode
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mini
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Hi, Can I use the unsteady mode to simulate the steady problem? Thanks.
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Old   April 1, 2005, 00:07
Default Re: Steady problem and unsteady mode
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hongxiao
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sure
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Old   April 1, 2005, 02:37
Default Re: Steady problem and unsteady mode
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debs
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The accuracy of the algorithm reduces when you use the unsteady mode for a problem which looks steady.
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Old   April 1, 2005, 08:14
Default Re: Steady problem and unsteady mode
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ap
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Each steady problem can be considered as the "final" state of an unsteady problem.

So you can simulate a steady case considering its evolution in time, waiting until it reaches the steady condition and averaging on a proper time interval.

Best regards, ap
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Old   April 1, 2005, 16:22
Default Re: Steady problem and unsteady mode
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Suggestion
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You will need to be sure though that you do not have an undsteady case. i.e. a flapping jet or vortex shedding etc. In these cases you will not have a steady solution.
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Old   April 1, 2005, 18:12
Default Re: Steady problem and unsteady mode
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ap
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Well, sure.

You can simulate a steady case as unstedy. The viceversa is obviously not true.

Regards, ap
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Old   April 3, 2005, 20:28
Default Re: Steady problem and unsteady mode
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mini
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Thanks.
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