publication . Article . 1985

Flow patterns and hydraulic losses in quasi-coil pipes : The effects of configuration of bend cross section, curvature ratio and bend angle

Shimizu, Yukimaru; Sugino, Koichi; Yasui, Masaji; Hayakawa, Yukitaka; Kuzuhara, Sadao;
Open Access English
  • Published: 01 Jul 1985 Journal: Bulletin of JSME, volume 28, issue 241, pages 1,379-1,386 (issn: 0021-3764, Copyright policy)
  • Publisher: Japan Society of Mechanical Engineers
Abstract
Pipes with bend combinations are much used in the heat exchangers, since the curved path in the bends promotes the mixing in flow for active heat transfer. In the present paper, one of the pipes with bend combinations, namely, quasi-coiled pipes composed of many bend elements are investigated, and the relationships between the hydraulic loss and the secondary flow are studied experimentally. The configurations of the cross sections, the bent angles and the curvature ratios of the bend elements of the quasi-coiled pipes are changed in the experiment. The effects of these factors are investigated in detail. As the result, it is found that the secondary flow become...
Subjects
Medical Subject Headings: education
free text keywords: Turbulence, Quasi-coiled Pipe, Hydraulic Loss, Secondary Flow, Curvature Ratio, Circular Section, Square Section, Rectangular Sections, Aspect Ratio
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Article . 1985
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