Hi,
I have a question:
I
Hi,
I have a question: I am trying to evaluate lift/drag from a square cylinder and I am struggling with the results I get. I read that OpenFOAM produces fairly good results for such problems - but I also read, that OpenFOAM gives best results "dimensionfree" - and therefore most of the people are using v=1 and nu = "equivalent to get wanted Re number". I need to use properties of air to be able to compare my results. so I picked Ux = 0.3 nu = 1.5e-5 and in forces/forceCoeffs(to calculate lift/drag in OF1.5) rho = 1.2 equals Re = 20000 But my results are very bad, e.g Lift more than twice as it should be. Any Ideas? What properties do you use for air ? And how do you get the right Coefficients ? Thanks |
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