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Effects of Centrifugal Buoyancy and Reynolds Number on Turbulent Heat Transfer in a Two-Pass Angled-RIB-Roughened Channel with Sharp 180∘ Turns Investigated by Using Large Eddy Simulation
Joint Authors
Murata, Akira
Mochizuki, Sadanari
Source
International Journal of Rotating Machinery
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-12-04
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
The effects of the centrifugal buoyancy and the Reynolds number on heat transfer in a rotating two-pass rib-roughened channel with 180∘ sharp turns were numerically investigated by using the large eddy simulation.
The effect of the Reynolds number was seen in the finer flow structure.
The effect of the aiding/opposing buoyancy contributions was seen more vigorously on the pressure surface than that on the suction surface, though the details depended on the Reynolds number, the rotation number, and the existence of the ribs.
As the buoyancy increased, the friction factor dominated by the pressure loss of the sharp turn decreased, and the decreasing rate is smaller for the higher rotation speed case.
The Colburn's j factor stayed almost constant irrespective of the rotation speed.
As a result, the heat transfer efficiency index slightly increased by the buoyancy, and it became smaller for the higher rotation speed and higher Reynolds number cases.
American Psychological Association (APA)
Murata, Akira& Mochizuki, Sadanari. 2008. Effects of Centrifugal Buoyancy and Reynolds Number on Turbulent Heat Transfer in a Two-Pass Angled-RIB-Roughened Channel with Sharp 180∘ Turns Investigated by Using Large Eddy Simulation. International Journal of Rotating Machinery،Vol. 2008, no. 2008, pp.1-14.
https://search.emarefa.net/detail/BIM-497009
Modern Language Association (MLA)
Murata, Akira& Mochizuki, Sadanari. Effects of Centrifugal Buoyancy and Reynolds Number on Turbulent Heat Transfer in a Two-Pass Angled-RIB-Roughened Channel with Sharp 180∘ Turns Investigated by Using Large Eddy Simulation. International Journal of Rotating Machinery No. 2008 (2008), pp.1-14.
https://search.emarefa.net/detail/BIM-497009
American Medical Association (AMA)
Murata, Akira& Mochizuki, Sadanari. Effects of Centrifugal Buoyancy and Reynolds Number on Turbulent Heat Transfer in a Two-Pass Angled-RIB-Roughened Channel with Sharp 180∘ Turns Investigated by Using Large Eddy Simulation. International Journal of Rotating Machinery. 2008. Vol. 2008, no. 2008, pp.1-14.
https://search.emarefa.net/detail/BIM-497009
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-497009