Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Effect of Orifice Length on Particle Distribution in Particle-laden Jet

입자 부상 제트에서 오리피스 길이가 입자 분포에 미치는 영향에 대한 연구

  • 윤정수 (서울대학교 대학원 기계항공공학부) ;
  • 백경엽 (서울대학교 항공우주신기술연구소) ;
  • 길태옥 (LIG넥스원(주) PGM연구센터) ;
  • 윤영빈 (서울대학교 기계항공공학부)
  • Received : 2012.08.10
  • Accepted : 2012.10.02
  • Published : 2012.12.01
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Abstract

As a propellant of a high speed underwater vehicle, the hydro-reactive solid metal particles using seawater as a oxidizer maximizes its specific impulse when the solid metal particles and the seawater are uniformly mixed in the combustion chamber. The purpose of this study is to investigate the effects of injector geometry on the particle distribution of similarity point of view. For the purpose of this similarity of the mean velocity and particle number density along the radial direction was measured by Particle Image Velocimetry(PIV).

추력변화를 초공동 수중운동체의 추진체로 사용되는 수반응성 금속입자와 해수는 연소챔버 내에서 균질하게 혼합될 때 비추력이 극대화 된다. 본 연구의 목적은 상사성의 관점에서 분사기 형상이 입자 분포에 미치는 영향을 알아보는 것이다. 이를 위해 PIV기법을 이용하여 반경방향의 입자 분포와 입자 평균속도의 상사성에 대하여 알아보았다.

Keywords

References

  1. Wygnanski, I. and Fielderm H., "Some measurements in the self-preserving jet," J. Fluid Mech., Vol. 38, Issue 3, 1969, pp.577-612 https://doi.org/10.1017/S0022112069000358
  2. Hussein, J. H., Steven, P. C. and William, K. G., "Velocity measurements in a high Reynolds number, momentum-conserving, axisymmetric, turbulent jet," J. Fluid Mech., Vol. 258, 1994, pp.31-75 https://doi.org/10.1017/S002211209400323X
  3. Hyung-Taek Kim, Young-Hwan Lim, Young- Shin Jeon, and Young-Don Yoo, "A study on the two phase (gas/solid) flow characteristics in the entrained coal gasifier," Energy Conversion Engineering Conference, IECEC-97, Proceedings of the 32nd Intersociety, Vol. 2, 1997, pp.927-931
  4. Timothy, F. Miller and John, D. Herr, "Green Rocket Propulsion by Reaction of Al and Mg Powders and Water," 2004, AIAA 2004-4037
  5. Panchapakesan, N. R. and Lumley, J. L., "Turbulence measurements in axisymmetric jets of air and helium. Part 1. Air jet," J. Fluid Mech., Vol. 246, 1994, pp.197-223
  6. Rhodes, Martin, J., Introduction to Particle Technology, 2nd Ed., John Wiley & Sons Inc, 2008
  7. Kim, I., and Lee, S., "A Simple Technique for Sizing and Counting Spray Drops Using Digital Image Processing," Experimental Thermal and Fluid Science, Vol. 3, No. 2, 1990, pp.214-221 https://doi.org/10.1016/0894-1777(90)90089-P
  8. Khalitov, D. A., and Longmire, E. K., "Simultaneous two-phase PIV by two-parameter phase discrimination," Experiments in Fluids, Vol. 32, No. 2, 2002, pp.252-268 https://doi.org/10.1007/s003480100356
  9. Ronald, J. Adrian., "Particle-Imaging Techniques for Experimental Fluid Mechanics," Annu Rev. Fluid Mech., Vol. 23, 1991, pp.261-304 https://doi.org/10.1146/annurev.fl.23.010191.001401
  10. Tor, G. Malmstrom., Allan, T. Kirkpatrick., Brian, Christensen., and Kevin, D. Knappmiller., "Centerline veolicty decay measurements in low-velocity axisymmetric jets," J. Fluid Mech., Vol. 246, 1997, pp.363-377
  11. Gilandt, I., Fritsching, U., and Bauckage, K., "Measurement of phase interaction in dispersed gas/particle two-phase flow," International Journal of Multiphase Flow, Vol. 27, No 8, 2001, pp.1313-1332 https://doi.org/10.1016/S0301-9322(01)00007-6
  12. Gore, R. A., Crowe, C. T., "Effect of particle size on modulating turbulent intensity," International Journal of Multiphase Flow, Vol. 15, No. 2, 1989, pp.279-285 https://doi.org/10.1016/0301-9322(89)90076-1