Author(s)

Xingjian Lin¹, Guoyi He¹, Xinyi He², Qi Wang¹, Longsheng Chen¹

¹The School of Aircraft Engineering, Nanchang Hangkong University, Nanchang, China.
²The School of Software, Nanchang Hangkong University, Nanchang, China.

The vortex formation and organization are the key to understand the intrinsic mechanism in flying and swimming in nature. The vortex wake of dual-flapping foils is numerically investigated using the immersed boundary method. Beside the deflection of the reversed von-Kármán vortex street, an interesting phenomenon, the deflection of the von-Kármán vortex street, is observed behind the dual-flapping foils. The deflected direction is not according to the initial direction of biplane’s flapping motion. And the deflection angle is related to the difference between upward and downward deflecting velocities.

Vortex Formation, Deflection, Dual-Flapping Foils, Immersed Boundary Method

Lin, X. , He, G. , He, X. , Wang, Q. and Chen, L. (2017) Numerical Study of Mechanisms of the Vortex Formation in the Wake of Dual-Flapping Foils. Journal of Applied Mathematics and Physics, 5, 1431-1439. doi: 10.4236/jamp.2017.57118.