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TECHNICAL PAPERS: Heat Transfer Enhancement

Heat Transfer Enhancement to the Drag-Reducing Flow of Surfactant Solution in Two-Dimensional Channel With Mesh-Screen Inserts at the Inlet

[+] Author and Article Information
Peiwen Li

Mechanical Engineering Laboratory AIST, MITI, Japan The Energy Conservation Center, Japan

Yasuo Kawaguchi

Mechanical Engineering Laboratory AIST, MITI, Japan Namiki 1-2, Tsukuba, Ibaraki, Japane-mail: m4050@mel.go.jp

Hisashi Daisaka, Masanobu Maeda

Keio University, Japan

Akira Yabe

Mechanical Engineering Laboratory AIST, MITI, Japan

Koichi Hishida

Keio University, Japan

J. Heat Transfer 123(4), 779-789 (Nov 20, 2000) (11 pages) doi:10.1115/1.1370518 History: Received October 26, 1999; Revised November 20, 2000
Copyright © 2001 by ASME
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References

Figures

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Mean Nusselt number versus Reynolds number using different types of plug (Tin=30°C;Cm=30 ppm)
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Enhanced local Nusselt number with 5 sheets of A type mesh included in a plug (Tin=30°C;Cm=40 ppm)
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Enhanced local Nusselt number with 5 sheets of A type mesh included in a plug (Tin=30°C;Cm=60 ppm)
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Turbulent quantities of drag-reducing isothermal flow downstream of plug with 5 sheets of A-type mesh included (Tb=30°C;Re=2.2×104)
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Equivalent length of pressure loss resulted by mesh plug (Tin=30°C;Cm=30 ppm)
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Heat transfer enhancement versus pressure drop using mesh plug (Tin=30°C;Cm=30 ppm)
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Enhanced local Nusselt number with number of mesh sheet included in a plug (Tin=30°C;Cm=30 ppm)
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Schematic of experiment facility (Notations: 1-2Dchannel; 2-mesh plug; 3-Optical window for LDV laser shoot; 4-Pressure transducer; 5-Filter; 6-Contractor; 7-Deffuser; 8-Flow meter; 9-Tank; 10-Agitator; 11-Cooling coil; 12-Heater; 13-Thermometer; 14-Thermostat; 15-Pump; 16-Valve)
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Two-dimensional channel and mesh plug (unit:mm)
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Friction factors versus Reynolds number in smooth channel (Tb=30°C)
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Critical wall shear stress versus concentration of surfactant in smooth channel (Tb=30°C) (region I (Re<Rec1)—DR flow; region II (Rec1<Re<Rec2)—post DR flow; region III (Re>Rec2)—turbulent flow)
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Mean Nusselt number versus Reynolds number in smooth channel (Tin=30°C)
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Local Nusselt number of water and surfactant solution in smooth channel (Tin=30°C)
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Local Nusselt number of water flow downstream of mesh (Tin=30°C)
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Enhanced local Nusselt number by different types of mesh (Tin=30°C;Cm=30 ppm)

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