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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Печать: 1065-3090
ISSN Онлайн: 1940-4336

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Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v17.i2.50
pages 145-153

FLUID-SURFACE INTERACTION BETWEEN A PAIR OF RECTANGULAR CYLINDERS AND EFFECT OF GAP SPACE ON THEIR INTERACTION

Shuichi Torii
Kumamoto University, Kumamoto, Japan
Wen-Jei Yang
Department of Mechanical Engineering and Applied Mechanics University of Michigan, Ann Arbor, Michigan 48109-2125, U.S.A.

Краткое описание

Numerical study is performed on fluid-surface interaction between rectangular cylinders in lower Reynolds number flows. A pair of rectangular cylinders is placed with their longer side walls in either parallel or perpendicular direction to the flow stream, referred to as parallel or perpendicular arrangement, respectively. The Reynolds number is varied together with the ratio of the frontal width, d, of each cylinder to the cylinder spacing, 8, to determine the effects of surface configuration and flow velocity on the flow behavior. Both arrangement cases are treated and compared. It is found that (i) for the case of two cylinders in the absence of a gap, the flow, which behaves as in the case of a single cylinder, appears in the downstream direction, (ii) although the flow at d/δ = 0.4 occurs in the downstream direction around each cylinder, respectively, the corresponding thermal diffusion effect is suppressed due to a narrow gap, and (iii) thermal diffusion at d/δ = 1.0 yields from each cylinder and the behavior is not affected by the presence of a cylinder.