Experimental Study of the Jet Engine Exhaust Flow Field of Aircraft and Blast Fences

  • Haifu Wang Air Force Engineering University
  • Liangcai Cai Air Force Engineering University
  • Xiaolei Chong Air Force Engineering University
  • Hao Geng Air Force Engineering University
Keywords: jet flow, blast fence, experimental research, dynamic pressure, temperature,

Abstract

A combined blast fence is introduced in this paper to improve the solid blast fences and louvered ones. Experiments of the jet engine exhaust flow (hereinafter jet flow for short) field and tests of three kinds of blast fences in two positions were carried out. The results show that the pressure and temperature at the centre of the jet flow decrease gradually as the flow moves farther away from the nozzle. The pressure falls fast with the maximum rate of 41.7%. The dynamic pressure 150 m away from the nozzle could reach 58.8 Pa, with a corresponding wind velocity of 10 m/s. The temperature affected range of 40°C is 113.5×20 m. The combined blast fence not only reduces the pressure of the flow in front of it but also solves the problems that the turbulence is too strong behind the solid blast fences and the pressure is too high behind the louvered blast fences. And the pressure behind combined blast fence is less than 10 Pa. The height of the fence is related to the distance from the jet nozzle. The nearer the fence is to the nozzle, the higher it is. When it is farther from the nozzle, its height can be lowered.

Author Biographies

Haifu Wang, Air Force Engineering University
department of airport engineering
Liangcai Cai, Air Force Engineering University
department of airport engineering
Xiaolei Chong, Air Force Engineering University
department of airport engineering
Hao Geng, Air Force Engineering University
department of airport engineering

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Published
2015-04-24
How to Cite
1.
Wang H, Cai L, Chong X, Geng H. Experimental Study of the Jet Engine Exhaust Flow Field of Aircraft and Blast Fences. Promet [Internet]. 2015Apr.24 [cited 2023Feb.5];27(2):181-90. Available from: https://traffic.fpz.hr/index.php/PROMTT/article/view/1545
Section
Articles