Study of sheet flutter with large deformation in passage flow

Abstract

This study reports about the numerical simulation of the sheet flutter in passage flow with large deformation and vortex shedding from trailing-edge. The equation of motion for flexible sheet has the Kelvin-Voigt-type material damping. Discrete vortices are shed to satisfy the regularity condition of flow at trailing-edge. At first, our numerical model under the uniform flow was compared with the preceding study to verify this model. Using the validated simulation model, we investigated the relationship among the material damping, width of passage and behavior of flutter. We clarified that material damping and passage width affect the flutter behavior and the efficiency of energy harvest due to flutter.