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http://dx.doi.org/10.5293/KFMA.2009.12.1.051

Measurement of the Detailed Heat Transfer Coefficient in the Rotating Dimpled Rectangular Channel  

Park, Seoung-Duck (한국항공대학교 항공우주 및 기계공학부 대학원)
Lee, Ki-Seon (한국항공대학교 항공우주 및 기계공학부 대학원)
Jeon, Chang-Soo (한국항공대학교 항공우주 및 기계공학부)
Kwak, Jae-Su (한국항공대학교 항공우주 및 기계공학부)
Jun, Young-Min (한국항공우주연구원 KHP 개발실)
Publication Information
The KSFM Journal of Fluid Machinery / v.12, no.1, 2009 , pp. 51-56 More about this Journal
Abstract
The detailed heat transfer coefficient on a rotating dimpled channel were measured using the transient liquid crystal technique. The channel height to dimple diameter was 2, dimple center distance to dimple diameter was 1.5 and channel aspect ratio was 4. Tested Reynolds number based on the channel hydraulic diameter was varied from 15000 to 35000 and corresponding rotation number was ranged from 0.026 to 0.057. Results showed that the Coriolis force by rotation enhanced the heat transfer coefficient on the trailing surface. As the Reynolds number increased, i.e. rotation number decreased, the heat transfer coefficient increased and the thermal performance factor decreased.
Keywords
dimple; rotating channel; Transient liquid crystal technique; Thermal performance factor; Twin vortex;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Griffith, T. S., Hadhrami, L. A., Han. J. C., 2002 'Heat transfer in rotating rectangular cooling channels (AR=4) with dimple,' ASME paper GT-2002-30220
2 Shin, S. M., Jeon, C. S., Kwak, J. S., and Jung Y. W., 2007, 'Improvement of accuracy in evaluating hue change time in the hue detection based transient liquid crystals technique,' Journal of Mechanical Science and Technology, vol. 31, no. 11 pp. 918-915   과학기술학회마을   DOI   ScienceOn
3 Kwak, J. S., 2008, 'Comparison of Analytical and Superposition Solutions of the Transient Liquid Crystal Technique,' Journal of Thermophysics and Heat Transfer, vol. 22, no. 2, pp. 290-295   DOI   ScienceOn
4 F. P. Incropera and D. P. DeWitt, 2001, Heat and mass transfer, 5th edition, John Wiley & Sons, INC
5 Han, J. C., Dutta, S., and Ekkad, S. V., 2000, Gas Turbine Heat Transfer and Cooling Technology, Taylor & Francis, New York
6 Mahmood, G. I. and Ligrani, P. M., 2002, 'Heat transfer in a dimpled channel: combined influences of aspect ratio, temperature ratio, Reynolds number, and flow structure,' International journal of heat and mass transfer, pp. 2011-2020   DOI   ScienceOn
7 Moon, S. W. and Lau, S. C., 2002, 'Turbulent heat transfer measurements on a wall with concave and cylindrical dimples in a square channel,' ASME paper GT-2002-30208
8 Moon, H. K., O'Connell, T. and Glezer, B., 2000, 'Channel height effect on heat transfer and friction in a dimpled passage,' Journal of engineering for gas turbines and power, Vol. 122, pp. 307-313   DOI   ScienceOn