Endwall heat transfer measurements for a radially rotating rectangular pin-fin channel with the width-to-height ratio (aspect ratio) of 8 are performed at the parametric conditions of , , and . Centerline heat transfer levels along the leading and trailing endwalls of the rotating pin-fin channel are, respectively, raised to 1.77–3.72 and 3.06–5.2 times of the Dittus–Boelter values. No previous attempt has examined the heat transfer performances for the pin-fin channel at such high rotation numbers. A selection of experimental data illustrates the individual and interactive Re, , and buoyancy number effects on heat transfer. Spanwise heat transfer variations between two adjoining pin rows are detected with the averaged Nusselt numbers (Nu) determined. A set of empirical equations that calculates Nu values over leading and trailing endwalls in the developed flow region is derived to correlate all the heat transfer data generated by this study and permits the evaluation of interactive and individual effects of Re, , and on Nu. With the aid of the Nu correlations derived, the operating conditions with the worst heat transfer scenarios for this rotating pin-fin channel are identified.
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e-mail: swchang@mail.nkmu.edu.tw
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April 2010
Research Papers
Heat Transfer in Radially Rotating Pin-Fin Channel at High Rotation Numbers
Shyy Woei Chang,
Shyy Woei Chang
Professor
Department of Marine Engineering, Thermal Fluids Laboratory,
e-mail: swchang@mail.nkmu.edu.tw
National Kaohsiung Marine University
, No. 142, Haijhuan Road, Nanzih District, Kaohsiung 811, Taiwan, R.O.C.
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Tong-Miin Liou,
Tong-Miin Liou
Professor
Department of Power Mechanical Engineering,
National Tsing Hua University
, 300 Hsinchu, Taiwan, R.O.C.
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Tsun Lirng Yang,
Tsun Lirng Yang
Associate Professor
National Kaohsiung Marine University
, No. 142, Haijhuan Road, Nanzih District, Kaohsiung City 81143, Taiwan, R.O.C.
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Guo Fang Hong
Guo Fang Hong
Marine Engineering,
National Kaohsiung Marine University
, No. 142, Haijhuan Road, Nanzih District, Kaohsiung City 81143, Taiwan, R.O.C.
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Shyy Woei Chang
Professor
Department of Marine Engineering, Thermal Fluids Laboratory,
National Kaohsiung Marine University
, No. 142, Haijhuan Road, Nanzih District, Kaohsiung 811, Taiwan, R.O.C.e-mail: swchang@mail.nkmu.edu.tw
Tong-Miin Liou
Professor
Department of Power Mechanical Engineering,
National Tsing Hua University
, 300 Hsinchu, Taiwan, R.O.C.
Tsun Lirng Yang
Associate Professor
National Kaohsiung Marine University
, No. 142, Haijhuan Road, Nanzih District, Kaohsiung City 81143, Taiwan, R.O.C.
Guo Fang Hong
Marine Engineering,
National Kaohsiung Marine University
, No. 142, Haijhuan Road, Nanzih District, Kaohsiung City 81143, Taiwan, R.O.C.J. Turbomach. Apr 2010, 132(2): 021019 (12 pages)
Published Online: January 21, 2010
Article history
Received:
August 20, 2008
Revised:
August 31, 2008
Online:
January 21, 2010
Published:
January 21, 2010
Citation
Chang, S. W., Liou, T., Yang, T. L., and Hong, G. F. (January 21, 2010). "Heat Transfer in Radially Rotating Pin-Fin Channel at High Rotation Numbers." ASME. J. Turbomach. April 2010; 132(2): 021019. https://doi.org/10.1115/1.3147103
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