[sandrobrad]

Currently I am doing a research about dynamic stall in the following conditions : Re 1.35e5, k 0.15 and mach 0.1. Then I've used the SA and komegasst turbulence models. Therefore I just obtained the attached plots.

My question is that I am not able to justify the differences between the SA and komegasst, specifically in the upstroke and downstroke. It has to do with the boundary layer behaviour, or the way that the models are defined, the transient behaviour of the flow in this conditions?. I was looking for papers trying to justify it but still has no clue. Should you have any idea, please let me know. Thanks in advance.