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Fig. 2. Comparison of the calculated and measured lift (CL) and drag (Cd) coefficients. The experimental data are reproduced from fig. 3C,D of Sane and Dickinson (2001). (A,B) The midstroke angle of attack {alpha}m is 50° and stroke amplitude {phi}h is 60°. (C,D) The midstroke angle of attack {alpha}m is 50° and stroke amplitude {phi}h is 180°. {tau}, non-dimensional time; {tau}c, non-dimensional period of one flapping cycle.





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