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流动显示和图像处理期刊
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN 打印: 1065-3090
ISSN 在线: 1940-4336

流动显示和图像处理期刊

DOI: 10.1615/JFlowVisImageProc.v6.i3.50
pages 205-219

FLOW VISUALIZATION ON THE LEEWARD SIDE OF THE UPSTREAM JUNCTURE OF A YAWED CIRCULAR CYLINDER

Yutaka Hara
Department of Mechanical and Aerospace Engineering, Department of Applied Mathematics and Physics, Tottori University, 4-101 Koyama-cho, Tottori 680-0945, Japan
Hiroshi Higuchi
Department of Mechanical, Aerospace and Manufacturing Engineering, Syracuse University, Syracuse, New York 13244-1240, USA
Tsutomu Hayashi
Department of Applied Mathematics and Physics, Tottori University, 4-101 Koyama-cho, Tottori 680-0945, Japan

ABSTRACT

Flow on the leeward side of the upstream juncture of a yawed circular cylinder placed between two flat plates with yaw angle 60° was investigated with a dye flow visualization technique and particle image velocimetry (PIV). Strong three-dimensionality of the wake flow is observed behind the juncture part, including steady wake vortices along the cylinder and pairs of horseshoe and trailing vortices on the plate. A three-dimensional singular point was identified on the symmetry plane behind the upstream juncture and its effect on the vortex system and the wake flow is described.


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