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Volume 42 Issue 1
Jan.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(1): 72-78.
BU Xueqin, PENG Long, LIN Guiping, et al. Chordwise attenuation of heat transfer performance on inner surface of hot-air anti-icing system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(1): 72-78. doi: 10.13700/j.bh.1001-5965.2015.0065(in Chinese)
Citation: BU Xueqin, PENG Long, LIN Guiping, et al. Chordwise attenuation of heat transfer performance on inner surface of hot-air anti-icing system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(1): 72-78. doi: 10.13700/j.bh.1001-5965.2015.0065(in Chinese)
shu

Chordwise attenuation of heat transfer performance on inner surface of hot-air anti-icing system

doi: 10.13700/j.bh.1001-5965.2015.0065
  • 1.

    School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • 2. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China

Funds:  National Natural Science Foundation of China(51206008)
  • Received Date: 30 Jan 2015
  • Publish Date: 20 Jan 2016
    Abstract
  • The local heat transfer performance on the inner surface of the airfoil leading in jet impingement hot-air anti-icing system is experimentally studied through inverse flux technique using a piccolo which has 3 rows of orifices chordwisely, among which the middle orifice is exactly facing the stagnation point. The jet Reynolds number, Rej, the relative piccolo tube to surface distance, Zn/d, and the relative chordwise arc length in the jet impingement zone, r/d, are studied as the factors of local jet impingement heat transfer performance. The range of Rej, Zn/d and r/d are 2.5×104-1×105, 1.736-27.5, 13.21-61.5, respectively. The local heat transfer performance curve looks like a bell, meaning it is high around the stagnation point and decreases as the position goes aside. This curve consists of 3 parts: the stable zone, the decline zone and the ending zone.Stable zone is only dependent on r/d. All of Rej, Zn/d and r/d significantly affect the declining rate of decline zone. However, the amount of decrease is nearly independent of r/d. The experimental correlation equation of the heat transfer performance attenuation under the circumstances of applying this kind of piccolo structure is developed, which would be helpful for future design of anti-icing system and evaluation of its thermal performance.

     

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