Why does a 3D wing's CL keep increasing even after 50° AOA in XFLR5? Can you please tell why my 3D wing in XFLR5 keeps increasing it's lift even after 50 degree AOA, while it's 2D profile stalls after about 10 degrees ?

More details on simulation setup:


Airspeed is 15 m/s (Re is about 20000-25000)
Wing chord length is 3 cm
Wing span is 12 cm
Wing is straight
Airfoil is symmetric (NACA-0009)
XFLR5 is not made for this kind of calculation. Do not trust the results.
Stall is not the end of lift. See below for 2D wind tunnel data collected by S. Hörner in his book Fluid Dynamic Lift. 3D results would look similar, but with a less steep gradient around 0° and lower peaks.




180° polar for several airfoils