I am an aeronautical student who is currently exploring the flapping airfoil problem and the associated phenomena. For that effect, I’m using ANSYS Fluent to numerically simulate the problem and for a faster computation, the parallel processing is activated. However, when extracting the aerodynamic coefficients (lift, drag and moment) the data comes with random (numerical) noise that has no physical meaning. When using the serial computation option, the problem is not seen.
What should I do regarding this problem?