[dennis722]

hello,
i have some weird results when simulating a multipart and multistory airfoil in 2D. In 2D i always get a stall in the wing in the second floor. But in 3D everything is right.

I dont know what could be wrong here, i also have read the userbook.

I used the polyhedralmesher and the realizable k-epsilon model.

The firstpicture shows the 3D simulation with no stall.
The second picture shows the 2D simulation where the wing in the second floor has differente angle of attacks and positions.

Does somebody know what could be wrong? Does the turbulence modell assumptions things because its a simulation in 2D?