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Title :流路内熱伝達促進におよぼす乱流促進体形状の影響
Title alternative :Effect on Heat Transfer Augmentation by Some Geometric Shapes of a Turbulence Promoter in a Rectangular Duct
Authors :親川, 兼勇
新里, 隆男
馬渕, 幾夫
Authors alternative :Oyakawa, Kenyu
Shinzato, Takao
Mabuchi, Ikuo
Issue Date :25-Feb-1986
Abstract :This paper investigates how the local heat transfer coefficient is affected by geometric shape and the clearance "C", when turbulence promoters of various types (blockage ratio D/2H=0.22) are set in staggered arrangement in a rectangular duct in order to augment heat transfer from the wall. The distribution of local heat transfer coefficients depend son the clearance "C", which can be further differentiated by the presence or absence of the Karman vortex shedding. The degree of augmentation is also analysed, taking account of the pressure loss. It was found that the performance ratio η(the ratio of average pumping power) is larger than unity for all types, when the range of clearance "C" is smaller than 3 mm.
Type Local :雑誌掲載論文
ISSN :03875016
Publisher :日本機械学会
URI :http://hdl.handle.net/20.500.12000/198
Citation :日本機械学会論文集. B編 = Transactions of the Japan Society of Mechanical Engineers. B Vol.52 no.474 p.860 -865
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Engineering)

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