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TECHNICAL PAPERS

Pressure and Flow Characteristics in a Rotating Two-Pass Square Duct With 45-Deg Angled Ribs

[+] Author and Article Information
Tong-Miin Liou

College of Engineering, Feng Chia University, Taichung, Taiwan, ROC

Guang-Yuan Dai

Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan, ROCe-mail: d853708@oz.nthu.edu.tw

J. Turbomach 126(1), 212-219 (Mar 26, 2004) (8 pages) doi:10.1115/1.1649744 History: Received December 01, 2002; Revised March 01, 2003; Online March 26, 2004
Copyright © 2004 by ASME
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References

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Cheah,  S. C., Iacovides,  H., Jackson,  D. C., Ji,  H., and Launder,  B. E., 1996, “LDA Investigation of the Flow Development Through Rotating U-Ducts,” ASME J. Turbomach., 118, pp. 590–596.
Liou,  T. M., and Chen,  C. C., 1999, “LDV Study of Developing Flows Through a Smooth Duct With 180-deg Straight-Corner Turn,” ASME J. Turbomach., 121, pp. 167–174.
Servouze, Y., 1998, “3D Laser Anemometry in a Rotating Cooling Channel,” ASME Paper 98-GT-123.
Bons,  J. P., and Kerrebrock,  J. L., 1999, “Complementary Velocity and Heat Transfer Measurements in a Rotating Cooling Passage With Smooth Walls,” ASME J. Turbomach., 121, pp. 651–662.
Liou,  T. M., Chen,  C. C., and Chen,  M. Y., 2003, “Rotating Effect on Fluid Flow in Two Smooth Ducts Connected by a 180-Degree Bend,” ASME J. Fluids Eng., 125, pp. 327–335.
Tse, G. N., and Steuber, G. D., 1997, “Flow in a Rotating Square Serpentine Coolant Passage With Skewed Trips,” ASME Paper 97-GT-529.
Liou,  T. M., Chen,  M. Y., and Tsai,  M. H., 2001, “Fluid Flow and Heat Transfer in a Rotating Two-Pass Square Duct With In-Line 90° Ribs,” ASME J. Turbomach., 177, pp. 255–264.
Schabacker, J., Bolcs, A., and Johnson, B. V., 1999, “PIV Investigation of the Flow Characteristics in an Internal Coolant Passage With 45° Rib Arrangement,” ASME Paper 99-GT-120.
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Prakash,  C., and Zerkle,  R., 1995, “Prediction of Turbulent Flow and Heat Transfer in a Ribbed Rectangular Duct With and Without Rotation,” ASME J. Turbomach., 177, pp. 255–264.
Iacovides,  H., and Raisee,  M., 1999, “Recent Progress in the Computation of Flow and Heat Transfer in Internal Cooling Passages of Turbine Blades,” Int. J. Heat Fluid Flow, 20, pp. 320–328.
Jang, Y. J., Chen, H. C., and Han, J. C., 2000, “Flow and Heat Transfer in a Rotating Square Channel With 45° Angled Ribs by Reynolds Stress Turbulence Model,” ASME Paper 2000-GT-0229.
Taslim,  M. F., Rahman,  A., and Spring,  S. D., 1991, “An Experimental Investigation of Heat Transfer Coefficients in a Spanwise Rotating Channel With Two Opposite Rib-Roughened Walls,” ASME J. Turbomach., 113, pp. 75–82.
Taslim,  M. F., Bondi,  L. A., and Kercher,  D. M., 1991, “An Experimental Investigation of Heat Transfer Coefficients in a Spanwise Rotating Channel With Two Opposite Rib-Roughened Walls,” ASME J. Turbomach., 113, pp. 75–82.
Wagner,  J. H., Johnson,  B. V., Graziani,  R. A., and Yeh,  F. C., 1992, “Heat Transfer in Rotating Serpentine Passages With Trips Normal to the Flow,” ASME J. Turbomach., 114, pp. 847–857.
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Figures

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Sketch of configuration, coordinate system, and dimension of test section
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Schematic drawing of flow system and LDV facility
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Streamwise mean velocity and turbulence intensity profiles at inlet reference station X*=11.6 (or X/H=85) of the first pass in (a) Z*=−0.5 and (b) Y*=0 planes
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Evolution of longitudinal mean velocity component in Z*=−0.5 and Z*=0.5 planes
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Mean velocity vector plots around the turn for Re=1.0×104 and Ro=0.15 in X-Y plane of the (a) first and (b) second pass
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Mean velocity plot on the midturn cross section for Re=1.0×104 and Ro=0.15
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Distributions of transverse mean velocity on the cross-sectional planes in between rib pairs N=1 and N=2 (near the entrance) and N=7 and N=8 (near the 180-deg turn) of the first ribbed passage
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Distributions of transverse mean velocity on the cross-sectional planes in between rib pairs N=11 and N=12 (near the 180-deg turn) and N=17 and N=18 (near the exit) of the second ribbed passage
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Examination of periodic fully developed flow condition by comparing U/Ub profiles at XN/H=3.5 in various pitches
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Relationships between mean velocity components, turbulent kinetic energy, and regional averaged surface heat transfer coefficient
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Variation of dimensionless wall static pressure with X/DH at various rotation numbers (+ and ×: measured along the outer and inner side walls of the first and second passage, respectively)
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Friction factor versus rotation number

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