Abstract

Inspired by the biological characteristics of manta ray underwater gliding, flexible follow-up flaps are added to the traditional rigid wing to improve the lift-drag effect of hydrofoil gliding. Using computational fluid dynamics, two-way fluid-structure interaction method and dynamic mesh technology, the hydrodynamic of flexible follow-up flaps are studied. The hydrodynamic performance between pure rigid wing and hydrofoil with flexible follow-up flaps are compared. Taking the material stiffness of the flexible flap, and the length of the flexible flap as the design parameters, the influence of different design parameters on the lift-drag effect of the flexible follow-up flap is analyzed.

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