Aerodynamic Performance of Bio-inspired 3D Corrugated Wings Learned from the Ladybird BeetleHindwing

Beetle hindwings have two specific features: the deployable hindwing and corrugation wing. In the low Reynolds numbers environment, the corrugated wing structure of insect wings proves to be essential for improving aerodynamics.In order to explore further whether flexible corrugated structure has a significant effect on aerodynamic effects. Two 3D corrugated wing models (3D-CW models) were designed with rigid and flexible properties, respectively. In this paper, based on ANSYS Fluent, the fluid-structure interaction method is used to solve the Navier-Stokes equations numerically. At a series of angles of attack, the flexible wing has better aerodynamics at angles of attack larger than 10°; the deformed leading edge can induce a stronger Leading edge vortex (LEV) than found at the rigid wing.