In nature, insects with their forewings and hindwings undergoing small-gap flapping motion
experience strong aerodynamic interaction. Conventional studies mainly focus on the …

Wave-assisted propulsion (WAP) systems directly convert wave energy into thrust using
elastically mounted hydrofoils. The wave conditions as well as the design of the hydrofoil …

Dragonflies can independently control the movement of their forewing and hindwing to
achieve the desired flight. In comparison with previous studies that mostly considered the …

Dragonfly-like flapping wings and foils take an in-line arrangement and their performance is
strongly affected by the wing–wing interaction. In this study of tandem pitching-plunging foils …

We report direct numerical simulations of the flow around a spanwise-flexible wing in
forward flight. The simulations were performed at but different aspect ratio have the same …

Numerical simulations of the flow around spanwise-flexible flapping wings in tandem are
reported, focusing on a thrust-generating configuration. Wings of aspect ratio 2 and 4 in …

A numerical investigation is conducted on the propulsive performance and acoustic
characteristics of two flapping foils in tandem at Re= 200 in uniform flow using the lattice …

The flow interaction between the front and rear wings in tandem configuration can lead to
superior aerodynamic performance in insects and micro air vehicles. Previous studies have …

There are flapping wing-style systems being developed by various institutions around the
world. However, despite there being many systems that superficially appear robust, there is …

In this study, the interaction of vortices generated from an oscillating airfoil with a hindfoil
placed downstream of the oscillating forefoil at low-Reynolds-number flow was investigated …