Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Optimal Conditions of Aerosol Flow Generation for High-density and Uniform Fog Screen

고밀도 균일 안개스크린을 위한 에어로졸 유동의 최적 생성조건

  • 신동수 (한국항공대학교 대학원) ;
  • 송우석 (한국항공대학교 대학원) ;
  • 김진원 ((주)아트닉스) ;
  • 김우진 (초당대학교 항공정비학과) ;
  • 구자예 (한국항공대학교 항공우주 및 기계공학부)
  • Received : 2016.12.30
  • Accepted : 2017.03.14
  • Published : 2017.03.31
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Abstract

The fog screen is a device projecting the media to the aerosol flow field. As major parameters to generate dense and steady fog screen, shear stress, optical blockage ratio and SMD were obtained result through experiment. The micro droplet was generated by the piezo oscillation element, and the aerosol flow mixed with an air flow was sprayed into the vertical direction from the top of the fog screen through the 280 mm slot. For produce a dense, uniform fog screen, the shear effect, optical blockage ratio and SMD between aerosol and air curtain were measured. The minimum and maximum shear stress conditions were selected and it was confirmed that the optical transmission deviation of the aerosol flow field was small when the aerosol and air curtain flow rates were changed. When the aerosol and air curtain flow power were 18 V (1.51 m/s) and 24 V (2.55 m/s), respectively, under the condition of the minimum shear stress and laminar flow, the optical blockage ratios with the spray length were small, and it produced a most stable and high density uniform fog screen by injecting a constant of $10{\mu}m$ or less.

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