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May 15, 2007, 09:23
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Do RANS simulation overpredict maximum Cp?
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Guest
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Hi,
I have an important doubt about the correctness of a RANS simulation and I really need your help. Given an inviscid flow of a perfect gas with freestream Mach number M_inf, the maximum possible value of Cp is reached at a stagnation point and it is: Cp_stagnation = 2/(gamma*M_inf^2)*((1+((gamma-1)/2)*M_inf^2)^(gamma/(gamma-1))-1) I have a RANS simulation which predicts a slightly higher Cp_stagnation. Is it possible? I think that viscosity should decrease the pressure recovery. What do you think? Best regards, Sergio |
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