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TECHNICAL PAPERS

Heat Transfer, Fluid Flow, and Pressure Measurements Inside a Rotating Two-Pass Duct With Detached 90-Deg Ribs

[+] Author and Article Information
Tong-Miin Liou

College of Engineering, Feng Chia University, Taichung, Taiwan, ROCe-mail: tmliou@pme.nthu.edu.tw

Meng-Yu Chen, Yu-Ming Wang

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

J. Turbomach 125(3), 565-574 (Aug 27, 2003) (10 pages) doi:10.1115/1.1565086 History: Received January 17, 2002; Online August 27, 2003
Copyright © 2003 by ASME
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References

Figures

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Sketch of configuration, coordinate system, and dimensions of test section
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Schematic drawing of LDV and TLCT facility
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Detailed local Nusselt number ratio distributions for the detached rib case at Ro=0.15 and Re=1×104 on (a) leading wall, and (b) trailing wall
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Variation of regional averaged Nusselt number ratio NumH/Nu0 versus rib index N with step-increased region size
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Regional averaged Nusselt number ratio distributions measured by different researchers on (a) leading wall, and (b) trailing wall
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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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Variation of streamwise mean velocity and turbulence intensity profiles with rotation number at X*=10 in between N=1 and N=2 rib pairs of the first pass in Z*=−0.5 plane
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Mean velocity vector plots around the turn for Ro=0.15 and Re=1.0×104 in (a) first pass, and (b) second pass
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Variation of the transverse mean velocity component with X/H: (a) immediately before the turn and near the trailing wall (Y*=1), and (b) immediately behind the turn and near the leading wall (Y*=−1)
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Relations between mean velocity components, turbulent kinetic energy and surface heat transfer coefficient inside the turn on the leading and trailing walls in (a) Z*=−0.5 plane, and (b) Z*=+0.5 plane for C/H=0.38 and Re=1.0×104
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Variation of dimensionless wall static pressure with X/DH in detached and attached ribbed duct flows at various rotation number (+: measured along the outer and inner side walls of the first and second pass, respectively)
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Variation of dimensionless wall static pressure with X/DH for orthogonal (present study) and parallel 22 rotations
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Friction factor versus rotation number

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