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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40503

Title: The effects of cross-sectional area and aspect ratio of beams on a laminar channel flow
Authors: Hai-ping Hu;Rong-Hua Yeh
Contributors: 國立臺灣海洋大學:輪機工程學系
Date: 2010-04
Issue Date: 2017-01-19T06:19:59Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract:The study analyzed the fully developed laminar flow in a channel with longitudinal rectangular beams arrayed along the channel width. The governing equations describing the fluid which flows along the direction of the beam length are ex-pressed with double Poisson equations and are solved by ei-genfunction-expansion and point-match method. The effects of cross-sectional area and aspect ratio of the beams are in-vestigated. Dimensionless velocity profile, mean velocity, and friction factor multiplied by Reynolds number in the channel are presented for analysis. Initially, a comparison of fRe for a special case is made. It is found that the predicted fRe of this work tends to approach that of a parallel-plate channel case for smaller A and a r . A further study shows that increasing the cross-sectional area of the beams will lead to a decrease both in the mean velocity and fRe values. For a fixed cross-section area of the beam, as the beam height increases, an increase in the mean velocity and volumetric flow rate of the fluid but a decrease in the fRe is obtained.
Relation: 18(2), pp.181-188
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40503
Appears in Collections:[輪機工程學系] 期刊論文

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