平板上の直立円柱後流 : 第2報,後流の簡潔表示

概要

論文の詳細を見る
To understand the transport process on a rough flat plate, an experimental investigation was carried out concerning a single circular cylinder which was set upright on a flat plate. From a flow visualization experiment, horseshoeshaped three-dimensional vortices were observed over a fairly long range downstream of the cylinder. Using the experimental results of the three-dimensional velocity distribution around the vortices, the velocity was expressed as the sum of the time-averaged and the fluctuation components. The structure of the fluctuating flow was obtained and it was clarified that the fluctuating component is composed of a row of boomerang-shaped or hairpin-shaped vortices which are much different from the horseshoe-shaped vortices. This vortices were clarified theoretically to induce Reynolds stress effectively in all directions.
一般社団法人日本機械学会の論文
1987-10-25