円柱で構成される正方二面格子の表面圧力分布と抗力係数

抄録

There are two types of square lattice structure, biplane grid and woven screen, in order to control various industrial flow fields. In particular, the square biplane grid which consists of several cylinders arrayed at right angle is often used to make turbulence. In addition, it is proposed to apply the heat transfer enhancement effect to heat exchanger. Accordingly, it is important to reveal the flow characteristics around circular cylinders forming biplane grid. However, the flow characteristics around circular cylinders forming square biplane grid has not been fully examined. Therefore, the aim of this study is to clarify the three-dimensional flow field around the circular cylinder members forming the square biplane grid by means of the measurement of surface pressure distributions, the estimation of local drag coefficients. It was found from this result that the difference in open area ratio affected the flow structure around square biplane grid forming by upstream and downstream circular cylinders.