Wake Measurements behind an Oscillating Airfoil in Dynamic Stall Conditions

Figure 4

Streamwise velocity profiles for 𝛼=5^∘+10^∘sin(𝜔𝑡)  and  𝑘=0.1 (Re = 6×10⁵ and Ma = 0.09).

(a) 𝛼=−4^∘

(b) 𝛼=0^∘

(c) 𝛼=4^∘

(d) 𝛼=8^∘

(e) 𝛼=12^∘

(f) 𝛼=14^∘