On Spatially Correlated Structure Of Surface Pressure on B/D=5 Rectangular Cross Section in Sinusoidal Flow

Abstract

The aim of this study is to clarify the generation mechanism of gust force due to fluctuating flow.In order to discuss the reason why the span-wise coherence of fluctuating pressures on two-dimensional bluffsections is larger than that of fluctuating wind velocities,the surface pressure around 2-D model with rectangular section of B/D=5were measured in the artificially generated 3-D fluctuating flow.In conclusion,it is considered that unsteady characteristics of the separation bubble influences on spatial structures of the surface pressure.