The present work is concerned with experimental investigation of the convective heat transfer in a radially rotating four-pass serpentine channel. Two types of staggered half-V rib turbulators are considered to examine their effects on heat transfer enhancement. The coolant air is pressurized and pre-cooled to compensate for the low rotating rate and low temperature or density difference in key parameters of thermal and flow characteristics. The geometric dimensions are fixed, whereas the ranges of the thermal and flow parameters in the present measurements are and The present results disclose the effects of the pressurized flow, rib arrangement, channel rotation, and centrifugal buoyancy on the local heat transfer in each passage of the channel. Finally, the present data are fitted on correlation equations for evaluation of local heat transfer in the rotating four-pass ribbed channel configurations considered.
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Heat Transfer in a Radially Rotating Four-Pass Serpentine Channel With Staggered Half-V Rib Turbulators
G. J. Hwang, Professor, Fellow ASME,
G. J. Hwang, Professor, Fellow ASME
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
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S. C. Tzeng,
S. C. Tzeng
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
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C. P. Mao,
C. P. Mao
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
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C. Y. Soong, Professor, Mem. ASME
C. Y. Soong, Professor, Mem. ASME
Department of Aeronautical Engineering, Chung Cheng Institute of Technology, Tahsi, Taoyuan, Taiwan 33509, Republic of China
Search for other works by this author on:
G. J. Hwang, Professor, Fellow ASME
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
S. C. Tzeng
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
C. P. Mao
Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China
C. Y. Soong, Professor, Mem. ASME
Department of Aeronautical Engineering, Chung Cheng Institute of Technology, Tahsi, Taoyuan, Taiwan 33509, Republic of China
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division March 20, 1999; revision received, July 21, 2000. Associate Editor: J. Han.
J. Heat Transfer. Feb 2001, 123(1): 39-50 (12 pages)
Published Online: July 21, 2000
Article history
Received:
March 20, 1999
Revised:
July 21, 2000
Citation
Hwang, G. J., Tzeng , S. C., Mao, C. P., and Soong, C. Y. (July 21, 2000). "Heat Transfer in a Radially Rotating Four-Pass Serpentine Channel With Staggered Half-V Rib Turbulators ." ASME. J. Heat Transfer. February 2001; 123(1): 39–50. https://doi.org/10.1115/1.1338130
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