Characteristics of Wind Forces and Pressures acting on Yawed Circular Cylinders with Small Aspect Ratio

Part 1 Mean Wind Forces and Mean Wind Pressures at Middle Span of Model

Abstract

Study of mean wind pressures and forces acting on yawed circular cylinders with small aspect ratio are examined by wind tunnel tests. In this report, mean drag force coefficients, mean lift force coefficients and mean pressure coefficients at middle span of the model with yawed angle are described, and Reynolds number effects on these value are discussed.
The mean drag force coefficients decrease near Re=300000 regardless with yawed angles. The mean lift force coefficients occur at these Reynolds number ranges except a yaw angle 45 degrees.
The mean lift coefficients are caused by differences of the wind pressure between sides of model.