turbulence modeling error at a stagnation point
hi
I'm studying external aerodynamics of Ahmed Body car geometry. I have used realizable keps, SST komega and RSM models. in terms of drag coefficient I got similar values with all models. but all of them calculated nearly 1.52 times drag at the front of the body (comparing with the original experiments. Realizable kepsilon has the highest drag on the front. why does this happen? would you please help me about investigating the greater pressures at the front caused by turbulence modeling? I have to write a discussion about it. this is really important. thanks for you time. Erdem 
Re: turbulence modeling error at a stagnation poin
If I answered your question & you used my answer, you might get penalized for cheating. So I will do you a favor & refrain from answering. :) So Google on....

Re: turbulence modeling error at a stagnation poin
why cheating? you or google? whats makes the difference?

Re: turbulence modeling error at a stagnation poin
You sound like a student looking for an easy answer. If you use google at least you are doing the research.

Re: turbulence modeling error at a stagnation poin
Durbin, P. A. (1996), "On the kepsilon Stagnation Point Anomaly"", International Journal of Heat and Fluid Flow, 1996, Vol. 17, pp. 8990.

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