I thought this was interesting:
Don't worry too much about the spoiler portion. Instead, watch how the boundary layer develops as the solver converges, and then he triggers the spoiler function. Looks like a von Karman wake field (flying Pepsi cans) even at zero AOA and before the spoiler was engaged.
I didn't do any verification of his method or setup parameters, so take this for what it is--an individual's design calculations without peer review.
Dave