Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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A Study on the Droplet Behavior Impacting on an Orifice

오리피스와 충돌하는 액적 거동에 관한 연구

  • D.H., Seo ;
  • D.J., Lee ;
  • H.B., Lee ;
  • B.S., Kang
  • 서동현 (전남대학교 기계공학부) ;
  • 이덕진 (전남대학교 기계공학부) ;
  • 이현빈 (전남대학교 기계공학부) ;
  • 강보선 (전남대학교 기계공학부)
  • Received : 2022.11.02
  • Accepted : 2022.11.22
  • Published : 2022.12.31
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Abstract

In this study, the behavior of water droplet impacting on a thin horizontal orifice was investigated. The impact behavior modes, transition velocities and diameters of daughter droplets were analyzed by changing the droplet velocity, orifice diameter and orifice thickness. Four typical modes of impacting droplet on an orifice were observed. The single-droplet and double-droplet transition velocities increased with increasing the orifice thickness and decreased with increasing the orifice diameter. On the other hand, the multi-droplet transition velocity decreased and then increased as the orifice diameter increased. At thin orifice thickness, the single droplet diameter approximated the orifice diameter, and increasing the orifice thickness produced a droplet larger than the orifice diameter. In the case of double droplet mode, the diameter of the first droplet showed a similar tendency like the single droplet mode, but the diameter of the second droplet was smaller than that of the first droplet, and the difference between them was affected more by the orifice thickness.

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References

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