Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on the Reduction of Pulsations in a 3/4 Open Jet Wind Tunnel

3/4 Open Jet 실차풍동에서의 Pulsation 감소에 관한 연구

  • 김무상 (현대자동차 남양연구소) ;
  • 기정도 (현대자동차 남양연구소) ;
  • 이정호 (현대자동차 남양연구소) ;
  • 장진혁 (현대자동차 남양연구소)
  • Published : 2002.08.01
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Abstract

Some open jet wind tunnels have been operating under limitations due to large pressure fluctuations at some wind tunnel speeds. The Hyundai Aero-acoustic full scale Wind Tunnel (HAWT), which was completed in 1999, shows that most of the specifications were fulfilled but wind tunnel pulsations at some wind speeds were observed. Hyundai Motor Company started the wind tunnel modification in order to solve this problem in 2001. After the modification work the amplitude of pressure fluctuation was reduced and below required level over full wind speed range. Aero-acoustic performance, e.g. background noise, as well as aerodynamic performance were improved after this work.

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