International Journal of Aeronautical and Space Sciences

  • 제18권1호
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  • Pages.38-47
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  • 2017
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  • 2093-274X(pISSN)
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  • 2093-2480(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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Experimental Study of Time-Dependent Evolution of Water Droplet Breakup in High-Speed Air Flows

  • 투고 : 2016.09.13
  • 심사 : 2017.03.26
  • 발행 : 2017.03.30
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초록

This paper presents experimental data on water droplet breakup in high-speed air flows. Exact-time-dependent evolution of wave and droplet interaction as well as breakup processes were optically visualized using a shadowgraph technique. Droplet experiments were conducted in a shock tube. Five flow conditions were used with an incident shock wave Mach number from 1.40 to 2.19 with Weber number based on the droplet initial diameter from 2300 to 38000, respectively. This corresponds to post-shock flow speeds varying from subsonic to supersonic. The considered droplet diameters were 2.0 mm to 3.6 mm. Some interesting wave patterns in the near wake were found. The present data shows that with an increase in the Weber number the droplet acceleration coefficient decreases and the level of decrease was weaker for the case of higher Mach numbers. This state of affair is different to the existing data in literature. Possible reasons are discussed.

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참고문헌

  1. Engel, O. G., "Fragmentation of Waterdrops in the Zone Behind an Air Shock", Journal of Research of the National Bureau of Standards, Vol. 60, No 3, 1958, pp. 245-280. https://doi.org/10.6028/jres.060.029
  2. Hanson, A. R., Domich, E. G. and Adams, H. S., "Shock Tube Investigation of the Breakup of Drops by Air Blasts", Physics of Fluids, Vol. 6, 1963, pp. 1070-1080. https://doi.org/10.1063/1.1706864
  3. Ranger, A. A. and Nicholls, J. A., "Aerodynamic Shattering of Liquid Drops", AIAA Journal, Vol. 7, No. 2, 1969, pp. 285-290. https://doi.org/10.2514/3.5087
  4. Waldman, G. D., Reinecke, W. G. and Glenn, D. C., "Raindrop Breakup in the Shock Layer of a High-Speed Vehicle", AIAA Journal, Vol. 10, No. 9, 1972, pp. 1200-1204. https://doi.org/10.2514/3.50350
  5. Gel'fand, B. E., Gubin, S. A., Kogarko, S. M. and Komar, S. P., "Breakup of Liquid in a Flow Behind Shock Waves with a Triangular Gas-Velocity Profile", Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, Vol. 8, No. 5, 1973, pp. 54- 60.
  6. Gel'fand, B. E., Gubin, S. A. and Kogarko, S. M., "Various Forms of Drop Fractionation in Shock Waves and Their Special Characteristics", Inzhenerno-Fizicheskii Zhurnal, Vol. 27, No. 1, 1974, pp. 119-126.
  7. Reinecke, W. G. and Waldman, G. D., "Shock Layer Shattering of Cloud Drops in Reentry Flight", 1975, AIAA Paper 75-152.
  8. Krzeczkowski, S. A., "Measurement of Liquid Droplet Disintegration Mechanisms", International Journal of Multiphase Flow, Vol. 6, 1980, pp. 227-239. https://doi.org/10.1016/0301-9322(80)90013-0
  9. Wierzba, A. and Takayama, K., "Experimental Investigation of the Aerodynamic Breakup of Liquid Drops", AIAA Journal, Vol. 26, No. 11, 1988, pp. 1329-1335. https://doi.org/10.2514/3.10044
  10. Wierzba, A., "Deformation and Breakup of Liquid Drops in a Gas Stream at Nearly Critical Weber Number", Experiments in Fluids, Vol. 9, 1990, pp. 59-64. https://doi.org/10.1007/BF00575336
  11. Hirahara, H. and Kawahashi, M., "Experimental Investigation of Viscous Effects upon a Breakup of Droplets in High-Speed Air Flow", Experiments in Fluids, Vol. 13, 1992, pp. 423-428. https://doi.org/10.1007/BF00223250
  12. Hsiang, L. P. and Faeth, G. M., "Near-Limit Drop Deformation and Secondary Breakup", International Journal of Multiphase Flow, Vol. 18, 1992, pp. 635-652. https://doi.org/10.1016/0301-9322(92)90036-G
  13. Hsiang, L. P. and Faeth, G. M., "Drop Deformation and Breakup due to Shock Wave and Steady Disturbances", International Journal of Multiphase Flow, Vol. 21, No. 4, 1995, pp. 545-560. https://doi.org/10.1016/0301-9322(94)00095-2
  14. Gel'fand, B. E., "Droplet Breakup Phenomena in Flows with Velocity Lag", Progress in Energy and Combustion Science, Vol. 22, 1996, pp. 201-265. https://doi.org/10.1016/S0360-1285(96)00005-6
  15. Chou, W. H., Hsiang, L. P. and Faeth, G. M., "Temporal Properties of Drop Breakup in the Shear Breakup Regime", International Journal of Multiphase Flow, Vol. 23, No. 4, 1997, pp. 651-669. https://doi.org/10.1016/S0301-9322(97)00006-2
  16. Joseph, D. D., Belanger, J. and Beavers, G. S., "Breakup of a Liquid Drop Suddenly Exposed to a High-Speed Airstream", International Journal of Multiphase Flow, Vol. 25, 1999, pp. 1263-1303. https://doi.org/10.1016/S0301-9322(99)00043-9
  17. Dai, Z. and Faeth, G. M., "Temporal Properties of Secondary Drop Breakup in the Multimode Breakup Regime", International Journal of Multiphase Flow, Vol. 27, 2001, pp. 217-236. https://doi.org/10.1016/S0301-9322(00)00015-X
  18. Igra, D. and Takayama, K., "Experimental Investigation of Two Cylindrical Water Columns Subjected to Planar Shock Wave Loading", Journal of Fluids Engineering, Vol. 125, 2003, pp. 325-331. https://doi.org/10.1115/1.1538628
  19. Theofanous, T. G., Li, G. J. and Dinh, T. N., "Aerobreakup in Rarefied Supersonic Gas Flows", Journal of Fluids Engineering, Vol. 126, 2004, pp. 516-527. https://doi.org/10.1115/1.1777234
  20. Theofanous, T. G. and Li, G. J., "On the Physics of Aerobreakup", Physics of Fluids, Vol. 20, 2008, 052103. https://doi.org/10.1063/1.2907989
  21. Theofanous, T. G., Mitkin, V. V., Ng, C. L., Chang, C. H., Deng, X. and Sushchikh, S., "The Physics of Aerobreakup. II. Viscous Liquids", Physics of Fluids, Vol. 24, 2012, 022104. https://doi.org/10.1063/1.3680867
  22. Hassler, G., "Breakup of Large Water Drops Under the Influence of Aerodynamic Forces in a Steady Stream of Steam at Subsonic Velocities", Proceedings of the 3rd International Conference on Rain Erosion and Related Phenomena, Hartley Whitney, Hampshire, England, 1970.
  23. Reinecke, W. G. and McKay, W. L., "Experiments on Water Drop Breakup Behind Mach 3 to 12 Shocks", Avco Corp., AVATD-0172-69-RR, 1969.
  24. Nicholson, J., "Drop Breakup by Airstream Impact", Published in Rain Erosion and Associated Phenomena, RAE Report N68-19401-427, Farnborough, England, 1967.
  25. Meng, J. C. and Colonius, T., "Numerical Simulations of the Early Stages of High-Speed Droplet Breakup", Shock Waves, Vol. 25, 2015, pp. 399-414. https://doi.org/10.1007/s00193-014-0546-z
  26. Chen, H., "Two-Dimensional Simulation of Stripping Breakup of a Water Droplet", AIAA Journal, Vol. 46, No. 5, 2008, pp. 1135-1143. https://doi.org/10.2514/1.31286
  27. Adler, W. F., Botke, J. C. and James, T. W., "Response of Infrared-Transparent Materials to Raindrop Impacts", AFMLTR- 79-4151, 1979.
  28. Adler, W. F. and Mihora, D. J., "Infrared-Transmitting Window Survivability in Hydrometeor Environments", SPIE, Window and Dome Technologies and Materials III, Vol. 1760, 1992, pp. 291-302.
  29. Seward, C. R., Pickles, C. S. J., Coad, E. J., Watt, M. and Field, J. E., "Studies of Rain Erosion Mechanisms in a Range of IR Transmitting Ceramics - Including Coated Samples", Contract SPC-92-4032, 1994.
  30. Obara, T., Bourne, N. K. and Field, J. E., "Liquid-Jet Impact on Liquid and Solid Surfaces", Wear, Vol. 186-187, 1995, pp. 388-394. https://doi.org/10.1016/0043-1648(95)07187-3
  31. Park. C. and Brown, J. D., "Fragmentation and Spreading of a Meteor-Like Object", The Astronomical Journal, Vol. 144, No. 6, 2012, pp. 1-11. https://doi.org/10.1088/0004-6256/144/1/1
  32. Evans, S., Finchum, A. and Hubbs, W., "Marshall Space Flight Center's Impact Testing Facility Capabilities", NASA, Document ID-20080013546, 2008.
  33. Gas dynamics calculator, http://silver.neep.wisc.edu/-shock/tools/gdcalc.html, Wisconsin Shock Tube Laboratory (WiSTL), retrieved on July 25, 2016.
  34. Pilch, M. and Erdman, C., "Use of Breakup Time Data and Velocity History Data to Predict the Maximum Size of Stable Fragments for Acceleration-Induced Breakup of a Liquid Drop", International Journal of Multiphase Flow, Vol. 13, No. 6, 1987, pp. 741-757. https://doi.org/10.1016/0301-9322(87)90063-2