Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Breakup Lengths of Circular and Elliptical Liquid Jets in a Crossflow

횡단류 유동 내 원형 및 타원형 액체제트의 분열길이

  • 송윤호 (충북대학교 기계공학부) ;
  • 안규복 (충북대학교 기계공학부)
  • Received : 2017.10.30
  • Accepted : 2017.12.08
  • Published : 2018.03.31
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Abstract

Breakup lengths of circular and elliptical liquid jets in a subsonic crossflow were experimentally studied. Two circular-shaped and four elliptical-shaped plain-orifice injectors, which had different aspect ratios and orifice length to diameter ratios, were used to provide various liquid jet conditions such as steady, cavitation, and hydraulic flip. By varying the injection pressure drop from 1 bar to 6 bar, spray images were taken using a shadowgraph technique. Breakup lengths were measured and analyzed. As the aspect ratio in orifices increased, liquid column breakup lengths normalized by the equivalent diameter were reduced irrespectively of the switching of the major or minor axis to the crossflow. It was also found that when hydraulic flip developed inside the orifice, x-directional breakup lengths more decreased for both circular and elliptical liquid jets.

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References

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