Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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A Study on the Thickness Characteristics of the Liquid Sheet Formed by an Impinging Jet Onto a Wall

벽 충돌 제트로 생성되는 액막의 두께 분포 특성 연구

  • J. S. Lee ;
  • T. Y. Lee ;
  • J. M. Jo ;
  • B. S. Kang
  • 이진성 (전남대학교 기계공학부) ;
  • 이태영 (전남대학교 기계공학부) ;
  • 조정민 (전남대학교 기계공학부) ;
  • 강보선 (전남대학교 기계공학부)
  • Received : 2023.04.27
  • Accepted : 2023.05.30
  • Published : 2023.06.30
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Abstract

In this study, the thickness of the liquid sheet formed by a low speed impinging jet onto a wall was measured by the direct contact method. The spatial distribution characteristics of the sheet thickness in the radial and circumferential directions, and the effects of jet velocity and liquid viscosity were analyzed. The measurement results were compared with the theoretical predictions for two impinging jets. The wavy surface was observed for low viscosity water, but not for high viscosity glycerol solutions. The sheet thickness decreased as the circumferential angle or the distance from the impinging point increased. The sheet thickness increased as the liquid viscosity increased. Comparison with the theoretical predictions showed some differences from the measurement results.

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References

  1. W. E. Ranz, "Some experiments on the dynamics of liquid films," J. of Applied Physics, Vol. 30, 1959, pp. 1950~1955. https://doi.org/10.1063/1.1735095
  2. K. D. Miller, "Distribution of spray from impinging liquid jets," J. of Applied Physics, Vol. 31, 1960, pp. 1132~1133. https://doi.org/10.1063/1.1735772
  3. D. Hasson and R. E. Peck, "Thickness distribution in a sheet formed by impinging jets," A.I.Ch.E. J., Vol. 10, 1964, pp. 752~754. https://doi.org/10.1002/aic.690100533
  4. E. A. Ibrahim and A. J. Przekwas, "Impinging jets atomization," Phys. Fluids, Vol. 3, 1991, pp. 2981~2987. https://doi.org/10.1063/1.857840
  5. R. Li and N. Ashgriz, "Characteristics of liquid sheets formed by two impinging jets," Phys. Fluids, Vol. 18, 2006, 087104.
  6. F. R. S. Taylor, "Formation of thin flat sheets of water," Proc. Roy. Soc. of London, Vol. 259, 1960, pp. 1~17. https://doi.org/10.1098/rspa.1960.0207
  7. Y. B. Shen and D. Poulikakos, "Thickness variation of liquid sheet formed by two impinging jets using holographic interferometry," J. Fluids Eng., Vol. 120, 1998, pp. 482~487. https://doi.org/10.1115/1.2820688
  8. Y. J. Choo and B. S. Kang, "Parametric study on impinging-jet liquid sheet thickness distribution using an interferometric method," Exp. in Fluids, Vol. 31, 2001, pp. 56~62. https://doi.org/10.1007/s003480000258
  9. 한명준, 전영우, 서태원, 강보선, "저속 충돌 제트로 생성되는 액막의 두께 분포 특성 연구", 한국분무공학회지, 제26권 제1호, 2021, pp. 26~32.
  10. M. Ahmed, A. Amighi and N. Ashgriz, "Characteristics of liquid sheets formed by splash plate nozzles," Exp. in Fluids, Vol. 44, 2008, pp. 125~136. https://doi.org/10.1007/s00348-007-0381-4
  11. T. Inamura and H. Yanaoka, "Prediction of mean droplet size of sprays issued from wall impingement injector," AIAA J., Vol. 42, 2004, pp. 614~621. https://doi.org/10.2514/1.9112
  12. A. Sarchami and N. Ashgriz, "An atomization model for splash plate nozzles," AIChE J., Vol. 56, 2010, pp. 849~857. https://doi.org/10.1002/aic.12033
  13. 김민석, 오진형, 정회민, 강보선, "평판 충돌 제트로 생성되는 액막의 두께 분포 특성 연구," 한국분무공학회지, 제27권 제2호, 2022, pp. 77~83.