RNG-k-epsilon with realisable contraint

idrama · October 26, 2010, 13:15

Hello Everybody,

does anybody know if the RNG-k-e model has a realizable constraint? If not, then I am wondering if it even need one, i.e. are there a other properties which makes the need for readability redundant?

Cheers in advance

harishg · October 26, 2010, 22:17

Realizability constraint is a constraint on the normal Reynolds stresses that the model must satisfy for it to be realizable. See here http://www.cfd-online.com/Wiki/Realisability_and_Schwarz%27_inequality

Check the Reynolds normal stresses from RNG k-e simulation to check if the model is realizable.

October 26, 2010, 13:15	RNG-k-epsilon with realisable contraint	#1
idrama Senior Member Claus Meister Join Date: Aug 2009 Location: Wiesbaden, Germany Posts: 241 Rep Power: 17	Hello Everybody, does anybody know if the RNG-k-e model has a realizable constraint? If not, then I am wondering if it even need one, i.e. are there a other properties which makes the need for readability redundant? Cheers in advance

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October 26, 2010, 22:17		#2
harishg Senior Member N/A Join Date: Mar 2009 Posts: 189 Rep Power: 17	Realizability constraint is a constraint on the normal Reynolds stresses that the model must satisfy for it to be realizable. See here http://www.cfd-online.com/Wiki/Realisability_and_Schwarz%27_inequality Check the Reynolds normal stresses from RNG k-e simulation to check if the model is realizable.