Bio-Inspired Flapping Wing Aerodynamics for Propulsion and Power Generation

Dear Colleagues,

Aquatic organisms, insects, and avian species employ a distinct kinetic mechanism for locomotion, characterized by oscillatory motions involving fins or wings, as opposed to conventional rotational propellers. This unconventional approach yields highly efficient propulsion and maneuvering capabilities. Notably, species such as tuna, dolphins, and sharks showcase exemplary hydrodynamic performance, characterized by elevated cruising speeds, superior efficiency, and minimal noise generation, achieved through the flapping motion of their caudal fins. Additionally, these oscillatory motions present opportunities for harnessing energy from incoming vortices or unsteady flows. Both applications necessitate a nuanced understanding of intricate physical mechanisms, encompassing fluid–structure interactions, leading-edge flow separation, and stall delay. Recently, there has been a discernible surge in research focused on unraveling the dynamics of flapping foils, evident in the escalating volume of publications dedicated to this subject.

This Special Issue aims to encapsulate novel conceptual designs for biomimetic propulsion or power generation employing flapping foils. Furthermore, it encompasses fundamental investigations that shed light on the underlying physics of flapping foil hydrodynamics. Researchers and engineers across diverse fluid mechanics and biomimetic design domains are cordially invited to contribute their cutting-edge research to this issue.

Prof. Dr. Jian Deng
Guest Editor

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