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Realizable k-e

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Old   May 12, 2017, 19:34
Default Realizable k-e
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yardena jodeck
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Hi everyone,

I would like to know when the demoninator in the e equation vanishes or becomes smaller than zero, and why the standard k-e uses wall functions.
Are this things related?

The realizable k-e changes the demonnator "k" by "k+sqrt(nu*epsilon])" in the e equation


Thanks
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