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The fluid force on a sphere with dimples has been investigated in Reynolds number range from 0.4×10 5 to 1.7×10 5. Two spheres of diameter 42.6 and 100mm were studied with 328 dimples on their surface. In the present study, the dimples in the form of three types (arc, cone and trapezoid type) were used. And more, the depth ratio of arc type dimple (k/d) (k(More)
The purpose of this study is to investigate the characteristics of the flow through the Jonangu channel which is used for ceremonial game called as 'Kyokusui-no-En' in Japanese. The geometry of the channel is measured, a visualization technique is used to measure the actual flow characteristics, and then a numerical flow model is used to represent the flow(More)
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