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TECHNICAL PAPERS: Porous Media, Particles, and Droplets

Computation of Flow and Heat Transfer in Two-Pass Channels With 60 deg Ribs

[+] Author and Article Information
Yong-Jun Jang

Turbine Heat Transfer Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123

Hamn-Ching Chen

Ocean Engineering Program, Department of Civil Engineering, Texas A&M University, College Station, TX 77843-3136

Je-Chin Han

Turbine Heat Transfer Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123

J. Heat Transfer 123(3), 563-575 (Feb 01, 2001) (13 pages) doi:10.1115/1.1371931 History: Received March 02, 2000; Revised February 01, 2001
Copyright © 2001 by ASME
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References

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Figures

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Geometry and numerical grid
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Streamwise velocity vector midway between the top and bottom surface: (a) smooth duct; and (b) 60 deg angled ribbed duct.
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Streamwise velocity and temperature fields midway between the inner and outer surfaces for 60 deg angled ribbed duct
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Secondary flows and temperature fields (θ=(T−To)/(Tw−To)) for smooth duct
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Secondary flow and temperature fields (θ=(T−To)/(Tw−To)) for 60 deg angled ribbed duct: (a) secondary flow; (b) temperature.
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Reynolds stress components at selected cross section for smooth duct: (a) uu/Wb2; (b) vv/Wb2; and (c) ww/Wb2
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Reynolds stress components midway between the inner and outer surface for 60 deg angled ribbed duct: (a) uu/Wb2; (b) vv/Wb2; and (c) ww/Wb2.
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Reynolds stress components at selected cross section for 60 deg angled ribbed duct: (a) uu/Wb2; (b) vv/Wb2; and (c) ww/Wb2.
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Detailed Nusselt number ratio distributions for smooth duct: (a) two-layer model (k-ε); (b) second-moment model; and (c) Ekkad and Han 1.
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Detailed Nusselt number ratio distributions for 60 deg angled ribbed duct: (a) two-layer model (k-ε); (b) second-moment model; and (c) Ekkad and Han 1.
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Enlarged view of detailed Nusselt number ratio distributions for 60 deg angled ribbed duct
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Calculated and measured Nusselt number ratios: (a) smooth duct; and (b) 60 deg angled ribbed duct.

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