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

Table 1

Comparisons of the amplitudes and frequencies obtained by the HAM (𝜆=−1) with numerical solutions.

𝑈^∗	𝑈^∗=1.5𝑈^∗𝐿			𝑈^∗=2𝑈^∗𝐿
HAM	Frequency	Pitch	Plunge	Frequency	Pitch	Plunge
𝑁=40	0.077563656128	0.13738145786	0.356858	0.0658609	0.2184836	0.6945022
𝑁=80	0.077563606476	0.13738151172	0.35685814	0.0657867	0.2185646	0.6964279
𝑁=120	0.07756360647090	0.13738151173	0.35685815	0.0657833	0.2185685	0.6965209
Numerical	0.0775635	0.1373816	0.3568590	0.0657829	0.2185689	0.6965298