Browse > Article

Effects of Orifice Internal Flow on Transverse Injection into Subsonic Crossflows  

김정훈 (서울대학교 기계항공공학부)
안규복 (서울대학교 기계항공공학부)
윤영빈 (서울대학교 기계항공공학부)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.7, no.1, 2003 , pp. 28-39 More about this Journal
Abstract
Effects of the orifice internal flow such as cavitation and hydraulic flip on transverse injection into subsonic crossflows have been studied. The liquid column breakup length and the liquid column trajectory were measured by changing the orifice diameter (d), the orifice length/orifice diameter (L/d), the injection pressure and the shapes (sharp and round) of orifice entrance, and were compared with previous results. It is found that cavitation bubbles, which occur inside the sharp-edged orifice, make the liquid jet very turbulent and especially in the orifices with L/d ＝ 5 hydraulic flip appear as cavitation bubbles are emitted from the orifice. The breakup length is shorter as cavitation bubbles grows and hydraulic flip appears. However, the liquid column trajectories normalized by the effective diameter and the effective momentum ratio have a similar tendency irrespective of cavitation and hydraulic flip.
Keywords
Transverse injection; Cavitation; Hydraulic flip; Liquid Column Breakup length; Liquid column trajectory;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Wotel, G. J., Gallagher, K. E., Caron, S. D., Rosfjord, T. J., Hautman, D. J., and Spadaccini, L. J., 'High Speed Turboramjet Combustor Technology Program,' Wright Lab., TR-91-2043, WrightPatterson AFB, OH, 1991
2 Schetz, J. A., Kush, E. A., Joshi, P. B., 'Wave Phenomena in Liquid Jet Breakup in a Supersonic Crossflow,' AIAA Journal, Vol. 18, No.7, pp. 774-778, 1980   DOI   ScienceOn
3 Wu, p. -K., Kirkendall, K. A., Fuller, R. P., and Nejad, A. S., 'Spray Structures of Liquid Jets Atomized in Subsonic Crossflows,' Journal of Propulsion and Power, Vol. 14, No.2, pp. 173-182, 1998   DOI   ScienceOn
4 Ingebo, R. D., 'Aerodynamic Effects of Combustor Inlet-Air Pressure on Fuel Jet Atomization,' AIAA Paper 84-1320, June 1984
5 Celia Soterious, Richard Andrews, and Mark Smith, 'Direct Injection Diesel Sprays and the Effect of Cavitation and Hydraulic Flip on Atomization,' SAE Paper No. 950080, 1995
6 Wu, P. -K., Kirkendall, K. A., Fuller, R. P., and Nejad, A. S., 'Breakup Processes of Liquid Jets in Subsonic Crossflows,' Journal of Propulsion and Power, Vol. 13, No.1, pp. 64-73, 1997   DOI   ScienceOn
7 N. Tamaki, M. Shimizu, K. Nishida and H. Hiroyasu, 'Effect of Cavitation and Internal Flow on Atomization of a Liquid Jet,' Atomization and Sprays, Vol. 8, pp. 179-197, 1998   ScienceOn
8 Thomas, R. H. and Schetz, J. A., 'Distribution Across the Plume of Transverse Liquid and Slurry Jets in Supersonic Airflow,' AIAA Journal, Vol. 23, No. 12, pp. 1892-1901   DOI   ScienceOn
9 Vennard, J., Elementary Fluid Mechanics, Wiley, New York, 3rd ed., pp. 216-219
10 Nurick, W. H., 'Orifice Cavitation and Its Effects on Spray Mixing', Journal of Fluid Engineering, Vol. 98, pp. 681-687, 1976 [14]Vennard, J., Elementary Fluid Mechanics, Wiley, New York, 3rd ed., pp. 216-219   DOI
11 Inamura, T. and Nagai, N., 'Spray Characteristics of Liquid Jet Traversing Subsonic Airstream,' Journal of Propulsion and Power, Vol. 13, No.2, pp. 250-256, 1997   DOI   ScienceOn
12 Chen, T. H., Smith, C. R., Schommer, D. G., and Nejad, A. S., 'Multi-Zone Behavior of Transverse Liquid Jet in High-Speed Flow,' AIAA Paper 93-0453, Jan. 1993
13 Schetz, J. A., and Padhye, A., 'Penetration and Breakup of Liquids in Subsonic Airstreams,' AIAA Journal. Vol. 15, No. 10, pp. 1385-1390, 1977   DOI   ScienceOn
14 Geery, E. L. and Margetts, M. J., 'Penetration of a high Velocity Gas Stream by a Water Jet,' Journal of Spacecraft, Vol. 6, No.1, pp. 79-81, 1969   DOI
15 Nguyen, T. T., and Karagozian, A. R. 'Liquid Fuel Jet in Subsonic Crossflow,' Journal of Propulsion and Power, Vol. 8, No.1, pp. 21-29, 1992   DOI
16 Inamura, T., Trajectory of a Liquid Jet Traversing Subsonic Airstreams,' Journal of Propulsion and Power, Vol. 16, No.1, pp. 155-157, 2000   DOI   ScienceOn
17 Nejad, A. S. and Schetz, J. A., 'Effects of Properties and Locations in the Plume on Droplet Diameter for Injection in a Supersonic Stream,' AIAA Journal, Vol. 21, No.7, pp. 956-961, 1983   DOI   ScienceOn