UDF for k-Epslon constants -- CFD Online Discussion Forums

April 9, 2008, 08:53	UDF for k-Epslon constants	#1
Kostetezer Guest Posts: n/a	I would like to change the standard k-Epslon constants to an UDF functionn and I did not find this UDF in the Manual. I want to use the LAM-Bremhorst model, a modified k-Epslon. In this model Cmu = 0.09 * FMU C1 = 1.44 * F1 C2 = 1.92 * F2 where FMU = [ 1.-EXP(-0.0165REYN) ]2 (1.+20.5/REYT) F1 = 1.+(0.05/FMU)3 F2 = 1.-EXP(-REYT2) and REYN = SQRT(KE)YN/ENUL REYT = KE**2/EP/ENUL Regards

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