There is a fair chance that the modeling shown is more appropriate for our models than not. It's been accepted that the flow we experience in our models at their low Reynold's numbers is more correctly described with fluid dynamics than by other systems.

There has been a running battle (war?) within these forums about not tapering our TEs and about squaring them off in order to cure flutter problems. Seldom does that war deviate into discussing what extra drag having a square TE will cause. It'd be interesting to see that test with a rounded LE and square TE to compare with the round-round. It'd be interesting because since the war revolves around the TE, it'd be interesting to see the flows from a rounded TE versus a square TE when the flow to each is relatively uninterrupted (not pre-screwed-up so to speak).