Abstract
In recent years, the flow field around moving elastic airfoil has attracted significant attentions. A flow around an elastic body is treated as a coupled problem of a fluid and a structure and it has been studied mainly by numerical analyses so far. The purpose of the present study is to perform the fluid-structure interaction analysis using ANSYS 11.0 and ANSYS CFX 11.0 and is to clarify the wake structure and characteristics of dynamic thrust. The clear thrust producing vortex street is formed in the wake of the heaving airfoils. The dynamic thrusts acting on heaving airfoils are strongly dependent on the Strouhal number based on the trailing edge amplitude regardless of elastic deformations.
