For vertical axis wind turbines applications
I'm wondering how one would find the static stall angle of an airfoil at a given Reynold number?
Is it just the critical angle of attach (AoA) where highest lift is achieved or some value beyond that? Consider the given graph for NACA0012 (for the use of vertical axis wind turbines) at Re of $3\times 10^5$, what will be the static stall angle in this case?
I found some stuff here and there, yet, I couldn't figure out my issue. The graphed data were taken from this Ref[i].
In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack increases. This occurs when the critical angle of attack of the foil is exceeded.
[i] Sheldahl, R.E. & Klimas, P.C., Aerodynamic characteristics of seven symmetrical airfoil sections through 180-degree angle of attack for use in aerodynamic analysis of vertical axis wind turbines , Albuquergue, NM: Sandia National Laboratories, Report No.: SAND80-2114, 1980.