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TECHNICAL PAPERS: Forced Convection

A Numerical Study of Flow and Heat Transfer in Rotating Rectangular Channels (AR=4) With 45 deg Rib Turbulators by Reynolds Stress Turbulence Model

[+] Author and Article Information
Mohammad Al-Qahtani, Je-Chin Han

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

Hamn-Ching Chen

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

J. Heat Transfer 125(1), 19-26 (Jan 29, 2003) (8 pages) doi:10.1115/1.1527907 History: Received April 10, 2002; Revised September 10, 2002; Online January 29, 2003
Copyright © 2003 by ASME
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References

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Han,  J. C., Zhang,  Y. M., and Lee,  C. P., 1991, “Augmented Heat Transfer in Square Channels with Parallel, Crossed, and V-Shaped Angled Ribs,” ASME J. Heat Transfer, 113, pp. 590–596.
Ekkad,  S. V., and Han,  J. C., 1997, “Detailed Heat Transfer Distributions in Two-Pass Square Channels With Rib Turbulators,” Int. J. Heat Mass Transf., 40(11), pp. 2525–2537.
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Dutta,  S., and Han,  J. C., 1996, “Local Heat Transfer in Rotating Smooth and Ribbed Two-Pass Square Channels With Three Channel Orientations,” ASME J. Heat Transfer, 118(3), pp. 578–584.
Soong,  C. Y., Lin,  S. T., and Hwang,  G. J., 1991, “An Experimental Study of Convective Heat Transfer in Radially Rotating Rectangular Ducts,” ASME J. Heat Transfer, 113, pp. 604–611.
Azad,  G. M. S., Uddin,  M. J., Han,  J. C., Moon,  H. K., and Glezer,  B., 2002, “Heat Transfer in a Two-Pass Rectangular Rotating Channel with 45 deg Angled Rib Turbulators,” ASME J. Turbomach., 124(2), pp. 251–259.
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Johnson,  B. V., Wagner,  J. H., Steuber,  G. D., and Yeh,  F. C., 1994, “Heat Transfer in Rotating Serpentine Passage With Trips Skewed to the Flow,” ASME J. Turbomach., 116, pp. 113–123.
Johnson,  B. V., Wagner,  J. H., Steuber,  G. D., and Yeh,  F. C., 1994, “Heat Transfer in Rotating serpentine Passage With Selected Model Orientations for Smooth or Skewed Trip Walls,” ASME J. Turbomach., 116, pp. 738–744.
Parsons,  J. A., Han,  J. C., and Zhang,  Y. M., 1995, “Effects of Model Orientation and Wall Heating Condition on Local Heat Transfer in a Rotating Two-Pass Square Channel with Rib Turbulators,” Int. J. Heat Mass Transf., 38(7), pp. 1151–1159.
Zhang,  Y. M., Han,  J. C., Parsons,  J. A., and Lee,  C. P., 1995, “Surface Heating Effect on Local Heat Transfer in a Rotating Two-pass Square Channel with 60 deg Angled Rib Turbulators,” ASME J. Turbomach., 117, pp. 272–280.
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Jang,  Y. J., Chen,  H. C., and Han,  J. C., 2001, “Computation of Flow and Heat Transfer in Two-Pass Channels with 60 deg Ribs,” ASME J. Heat Transfer, 123(3), pp. 563–575.
Jang,  Y. J., Chen,  H. C., and Han,  J. C., 2001b, “Numerical Prediction of the Flow and Heat Transfer in a Two-Pass Square Duct with 90 deg Ribs,” Int. J. Rotating Mach., 7(3), pp. 195–208.
Jang,  Y. J., Chen,  H. C., and Han,  J. C., 2001, “Flow and Heat Transfer in a Rotating Square Channel with 45 deg Angled Ribs by Reynolds Stress Turbulence Model,” ASME J. Turbomach., 123(1), pp. 124–132.
Al-Qahtani,  M. S., Jang,  Y. J., Chen,  H. C., and Han,  J. C., 2002, “Prediction of Flow and Heat Transfer in Rotating Two-Pass Rectangular Channels with 45 deg Rib Turbulators,” ASME J. Turbomach., 124(2), pp. 242–250.
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Figures

Grahic Jump Location
Effect of rotation and density ratio on 135 deg Nusselt number ratio distribution for Re=10,000
Grahic Jump Location
Calculated and measured Nusselt number ratio distribution for rotating ribbed duct (Ro=0.14), Re=10,000
Grahic Jump Location
Calculated and measured Nusselt number ratio distribution for non-rotating ribbed duct, Re=10,000
Grahic Jump Location
Trailing surface detailed Nusselt number ratio distribution in ribbed duct
Grahic Jump Location
Leading surface detailed Nusselt number ratio distribution in ribbed duct
Grahic Jump Location
Secondary flow and temperature [θ=(T−To)/(Tw−To)] for rotating ribbed duct, Ro=0.28, Δρ/ρ=0.40 and β=135 deg
Grahic Jump Location
Secondary flow and temperature [θ=(T−To)/(Tw−To)] for rotating ribbed duct, Ro=0.14, Δρ/ρ=0.122 and β=135 deg
Grahic Jump Location
Secondary flow and temperature [θ=(T−To)/(Tw−To)] for rotating ribbed duct, Ro=0.14 and β=90 deg
Grahic Jump Location
Secondary flow and temperature [θ=(T−To)/(Tw−To)] for non-rotating ribbed duct, Ro=0.00
Grahic Jump Location
Conceptual view of the secondary flow induced by angled ribs and rotation

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