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Cfd simulation on a smooth cylinder (drag coefficient) |
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October 12, 2016, 20:03 |
Cfd simulation on a smooth cylinder (drag coefficient)
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New Member
Simone
Join Date: Oct 2016
Posts: 11
Rep Power: 9 |
Hi to everyone!
Now I will explain my problem: -Software: STARCM+ -Goal: find the right value of drag coefficient on my cilinder -Details: u=45.9 m/s, D=1 m, Re=2.9*10^6 - 2D Domain: 10D over the cylinder, 10D belowe the cylinder, 10D at the left of the cylinder, 20D to the right od the cylinder -Boundary conditions: top and bottom planes are symmetry planes, the right plane is pressure outlet, the left plane is velocity inlet I can't find the right value of the drag coefficient on my cylinder!! I am getting crazy since the beginning of Semptember! I have tried both (steady) k-epsilon and k-omega model, but nothing, I have always oscillations (small or large) on the drag coefficients, around 0.4 (that is the right value if I would have a Reynolds of 1*10^6), but I need a value around 0.7 , 0.8 ... Can anyone help me, please?! |
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Tags |
cfd, cylinder, drag coefficient |
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