[TG777]

Hello every one,

I am new in this forum, before posting this thread, i have done some research to look for answers in various forums on the above title but could not find this peculiar issue.

I am conducting Large eddy simulation on pitching airfoil using Openfoam v. 2.3.0.

I ran LES simulation of static airfoil and imposed periodic boundary condition (cyclicAMI) at the lateral sides of the airfoil in parallel computation, the speed of the simulation is similar to, as in the case of static airfoil with symmetry boundary condition, which indicates that my periodic boundary conditions setting is correct.

But when i ran a dynamic case (Pitching airfoil) with periodic boundary condition (cyclicAMI) at the lateral sides of the airfoil in parallel computation, the simulation speed was extremely slow (approximately 15 times slower) when compared with a pitching airfoil case of symmetry boundary condition at the lateral side of the airfoil.

Please, have anyone experienced the-same issue explained above or could someone help to give an insight why the extreme slowest or how to improve the speed of the pitching airfoil case imposed with periodic boundary condition (cyclicAMI)?

Thanks for your help.

[MNoCeZ]

Hi,


i have the same problem, could you solve it?


Best Regards
Mark