Highly Accurate Solution of Limit Cycle Oscillation of an Airfoil in Subsonic Flow

Figure 6

Residues of (6) (𝑈^∗=1.5𝑈^∗𝐿) with HAM solutions attained with 𝜆=−1, (a): 𝑁=40; (b): 𝑁=80; (c): 𝑁=120, where the real and dash lines denote the residues of the first and the second equations, respectively.

(a)

(b)

(c)