Analysis of aerodynamic characteristics of tandem cylinders using LES

Abstract

The aerodynamic response characteristics of a pair of cylinders arranged in tandem are strongly affected by the aspect ratio and the spacing of the cylinders. The complicated flow field around tandem cylinders has been simulated using LES, in order to investigate the mechanism of vibration that originates from the flow field. Calculations have been conducted for two cases with different spacing ratios. The complex interactions between vortices shed from the upstream cylinder and the downstream one have been reproduced in detail.