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Title :縦渦による円管内伝熱促進の構造
Title alternative :Studies on Structure of Heat Transfer Enhancement in Tube with Longitudinal Vortices Being Generated
Authors :瀬名波, 出
石川, 周司
親川, 兼勇
Authors alternative :Senaha, Izuru
Ishikawa, Syuji
Oyakawa, Kenyu
Issue Date :25-Nov-2001
Abstract :As an augmentative means of forced convective heat transfer, relationships between the heat transfer and the flow behavior were experimentally investigated when the longitudinal vortex was artificially generated by single vortex generator in a pipe. The formation of vortices and then flow spiraling downstream were visualized by means of fluorescein and smoke as tracer of water and air flow, respectively. The velocity components were also measured using an inclined hot wire probe in three flow directions. The vortices rings being accompanied with longitudinal vortex as a kind of shear vortex gradually closed to the wall surface. It was found that the local heat transfer coefficients was mainly increased depending on the circumferential velocity component. Furthermore, a law of non-analogy between heat and flow was discussed about some locations taking accounts of both heat transfer coefficients and skin friction factors.
Type Local :雑誌掲載論文
ISSN :03875016
Publisher :日本機械学会
URI :http://hdl.handle.net/20.500.12000/240
Citation :日本機械学会論文集. B編 = Transactions of the Japan Society of Mechanical Engineers. B Vol.67 no.663 p.122 -129
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Engineering)

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