Thermal Feature Analysis of a New Hot-Air Anti-Icing Structure

  • LIANG Jiuli ,
  • XUAN Yimin ,
  • LIAN Wenlei
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  • 1. School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016, China
    2. Key Laboratory of Thermal Management and Energy Utilization of Aviation Vehicles, Ministry of Industry and Information Technology, Nanjing 210016, China

Online published: 2023-11-20

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2022

Abstract

Ice accretion on surfaces of the aircraft and engine is a serious threat to the flight safety. In this paper, a novel hot air anti-icing method is proposed based on the porous foam. Taking the NACA0012 airfoil as an example, the traditional thermal protection structure is proved to exist the deficiency in balancing the heat exchange caused by route loss of the heat. By dividing the hot chamber into multiple regions to fill with various foam metal, flow resistance characteristics and heat transfer characteristics for this protection mode are analyzed in order to derive the maximized benefit in anti-icing process. The calculation results reveal that, under the same condition, the region filled with foamed copper not only improves the temperature uniformity on the anti-icing area, but also achieves a better protection effect for enhancing heat transfer between the tube and the hot gas, averagely above 20°C higher than it without porous foam filling in surface temperature. Additionally, the minimum mass flow rate of the protection hot air is reduced by 16.7%. The gratifying efficiency of the porous filler in fortifying heat transfer confirms the potential of replacing the efficient but complex heat transfer design with simple structure filled with foam metal.

Cite this article

LIANG Jiuli , XUAN Yimin , LIAN Wenlei . Thermal Feature Analysis of a New Hot-Air Anti-Icing Structure[J]. Journal of Thermal Science, 2023 , 32(3) : 911 -921 . DOI: 10.1007/s11630-023-1752-8

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