So far for my problem I have been successful in getting the Umax and the inflow\outflow flux. I am using Solving PDEs in Python - <br> The FEniCS Tutorial Volume I as a framework to solve the problem. My last step is to obtain the drag and lift values, and as of now printing them in this way seen be…

Those forms are integrals, which you can compute using DOLFIN’s assemble() function. Something like print(f"drag: {assemble(D)}")

How to Get Drag and Lift Coefficients for Flow Around a Cylinder

nate June 30, 2021, 4:06pm 4

Make sure you’re computing the lift and drag of the solution function. Not a trial or test function. It’s difficult to debug without a MWE.

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