隅切を有する正方形角柱の空力特性に与える溝深さの影響

概要

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In this paper, we describe the drag reduction of square cylinders with corner cuttings and with grooves, such as riblets, on the surface. We carried out wind-tunnel tests for the measurements of the drag coefficient and the surface pressure acting on a square section of the cylinders with chamfered corners and with grooves. In addition, the flow visualization by spark tracing was carried out. From the results, the drag coefficient decreased as the depth of grooves increased. Compared with the square cylinder without grooves, the drag reduction of the square cylinder with grooves of 10% depth is about 10%, the drag reduction of the square cylinder with chamfered corners is about 30%, and the drag reduction of the square cylinder with chamfered corners and with grooves of 10% depth is about 35%.
東海大学の論文