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Random Perturbations

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Old   November 10, 2004, 18:48
Default Random Perturbations
  #1
Steve
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Hi all,

Does anyone know how to add random perturbations/fluctuations to a fluid domain? I've tried using the rand() function in a UDF with no success. I'm trying to do this in order to start a LES simulation from a converged k-e solution.

Thanks in advance,

Steve
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Old   December 4, 2004, 10:15
Default Re: Random Perturbations
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Helper
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If you can wait a bit more, FLUENT 6.2 has a simple built-in TUI command that superimpose quasi-random velocity components on top of the mean velocity field, based on the k-epsilon fields.
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