はく離領域にてヒービング運動する弾性翼後縁の弾性変形とその非定常揚力

抄録

The flow field around an unsteady airfoil is a common type of unsteady flow, and many researchers have experimentally and numerically investigated unsteady flows around moving airfoils. In recent years, the flow field around moving airfoils capable of flexible elastic deformation has become a focus of attention. The flow field around an elastically deforming airfoil may be understood as a fluid-structure interaction (FSI) problem, and the motion and deformation of elastic airfoils, as well as the associated dynamic behavior of the vortices, are complicated. In this study, the dynamic behavior of the vortices rolled up from the leading edge of a heaving elastic airfoil in a separation region through FSI simulation using ANSYS 16.1/ANSYS CFX 16.1. In particular, the FSI simulation of the flow field on a heaving elastic airfoil at an angle of attack of 16°, which is in the separation region under stationary conditions, and the dynamic behavior of both the leading edge vortex and the vorticity in the vicinity of the suction surface were clarified.