k-epsilon modell for Ahmed Body -- CFD Online Discussion Forums

September 21, 2017, 12:36	k-epsilon modell for Ahmed Body	#1
Friendly Member Join Date: Jun 2017 Posts: 73 Rep Power: 8	Hi guys, I am trying to run a simulation of an Ahmed Body with the k-epsilon modell. I have a problem how to determine the initial values of k and epsilon and have not found an answer in papers concerning the Ahmed Body. Just the Information, that the turbulent intensity is about 0.2%. I have found some equations here: https://www.cfd-online.com/Wiki/Turb...ary_conditions With this Information I can calculate k=3/2(iu)² with i=0.002 But how am I supposed to calculate epsilon? I am missing the Information of the turbulent length and I dont know how to get it. The wiki offers no usable informations either. I hope u can help me! Greetings, Friendly

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