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Drag Coefficient of Cylinder coming out completely wrong I think!

Question asked by Tom Lloyd on Feb 21, 2016
Latest reply on Feb 22, 2016 by Tom Lloyd

I am currently trying to calculate drag coefficient on a cylinder using "Normal force x" and plugging that value into the equation for drag coefficient,




The coefficient calculated is coming out as 0.52 when i know it should be double that, could someone give me some pointers on where i might be going wrong?


I am completing the simulation in 2D. I am using the time dependent condition, the computational domain is as large as required, the mesh size is 7 and i have specified the cylinder as a real wall. Also initial conditions are set to 20m/s in x direction for velocity. I have also tried tutorial 7 and I am still coming to the incorrect value.


Any help is greatly appreciated, thank you.