Large Eddy Simulation for the prediction of aerodynamic sound generated from a separation-reattachment type of 2D rectangular cylinder

Abstract

Numerical prediction of aerodynamic sound is required to reproduce with sufficient accuracy to the fluctuating component of a flow field and a pressure field. In this research, LES was applied to the flow field around a two dimensional rectangular cylinder and compare with upwind finite difference method. The flow field were reproduced with high precision and the parameters which governs aerodynamic sound were evaluated. Consequently, the usefulness of LES was shown from the point of the correlativity of pressure of the spanwise direction.