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The transitional regime between coalescing and splashing drops

Published online by Cambridge University Press:  26 April 2006

Martin Rein
Martin Rein
Affiliation:
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, 37073 Göttingen, GermanyPresent address: DLR, Institut für Strömungsmechanik, Bunsenstraße 10, 37073 Göttingen, Germany.
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Abstract

A drop that falls into a deep liquid can either coalesce with the receiving liquid and form a vortex ring or splash. Which phenomenon actually occurs depends on the impact conditions. When the impact conditions are gradually changed the transition between coalescence and splashing proceeds via a number of intermediate steps. These are studied by means of high-speed photography of the normal impact of water drops on a plane water surface. The characteristics of different flows that appear in the transitional regime and possible mechanisms causing these flows are discussed in detail. The phenomena considered include the rise of thick jets and the ejection of high-rising thin jets out of the impact crater, the entrainment of gas bubbles, crater dynamics, crown formation and the generation of splash droplets. Finally, a classification of the phenomena characteristic of the transitional regime is given.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 306 , 10 January 1996, pp. 145 - 165
Copyright
© 1996 Cambridge University Press

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References

Birkhoff, G., MacDougall, D. P., Pugh, E. M. & Taylor, G. I. 1948 Explosives with lined cavities. J. Appl. Phys. 19, 563–582.Google Scholar
Cai, Y. K. 1989 Phenomena of a liquid drop falling to a liquid surface. Exps. Fluids 7, 388–394.Google Scholar
Chapman, D. S. & Critchlow, P. R. 1967 Formation of vortex rings from falling drops. J. Fluid Mech. 29, 177–185.Google Scholar
Cresswell, R. W. & Morton, B. R. 1992 Raindrops in the sea II – Experimental studies of vortex ring generation. In Proc. 11th Australasian Fluid Mech. Conf., University of Tasmania, Hobart (ed M. R. Davis & G. J. Walker), pp. 615–618.
Cresswell, R. W. & Morton, B. R. 1995 Drop-formed vortex rings – The generation of vorticity. Phys. Fluids 7, 1363–1370.Google Scholar
Hallett, J. & Christensen, L. 1984 Splash and penetration of drops in water. J. Recherches Atmos. 18, 225–242.Google Scholar
Hobbs, P. V. & Osheroff, T. 1967 Splashing of drops on shallow liquids. Science 158, 1184–1186.Google Scholar
Hsiao, M., Lichter, S. & Quintero, L. G. 1988 The critical Weber number for vortex and jet formation for drops impinging on a liquid pool. Phys. Fluids 31, 3560–3562.Google Scholar
MacIntyre, F. 1968 Bubbles: a boundary-layer ‘microtome’ for micron-thick samples of a liquid surface. J. Phys. Chem. 72, 589–592.Google Scholar
Macklin, W. C. & Hobbs, P. V. 1969 Subsurface phenomena and the splashing of drops on shallow liquids. Science 166, 107–108.Google Scholar
Medwin, H., Kurgan, A. & Nystuen, J. A. 1990 Impact and bubble sound from raindrops at normal and oblique incidence. J. Acoust. Soc. Am. 88, 413–418.Google Scholar
Oguz, H. N. & Prosperetti, A. 1989 Surface-tension effects in the contact of liquid surfaces. J. Fluid Mech. 203, 149–171.Google Scholar
Oguz, H. N. & Prosperetti, A. 1990 Bubble entrainment by the impact of drops on liquid surfaces. J. Fluid Mech. 219, 143–179.Google Scholar
Peck, B. & Sigurdson, L. 1994 The three-dimensional vortex structure of an impacting water drop. Phys. Fluids 6, 564–576.Google Scholar
Prosperetti, A. & Oguz, H. N. 1993 The impact of drops on liquid surfaces and the underwater noise of rain. Ann. Rev. Fluid Mech. 25, 577–602.Google Scholar
Prosperetti, A., Pumphrey, H. C. & Crum, L. A. 1989 The underwater noise of rain. J. Geophys. Res. 94, 3255–3259.Google Scholar
Pumphrey, H. C. & Crum, L. A. 1988 Acoustic emissions associated with drop impacts. In Sea Surface Sound (ed.B. R. Kerman), pp. 463–483. Kluwer.
Pumphrey, H. C., Crum, L. A. & Bjørnø, L. 1989 Underwater sound produced by individual drop impacts and rainfall. J. Acoust. Soc. Am. 85, 1518–1526.Google Scholar
Pumphrey, H. C. & Elmore, P. A. 1990 The entrainment of bubbles by drop impacts. J. Fluid Mech. 220, 539–567.Google Scholar
Pumphrey, H. C. & Walton, A. J. 1988 Experimental study of the sound emitted by water drops impacting on a water surface. Eur. J. Phys. 9, 225–231.Google Scholar
Rein, M. 1993 Phenomena of liquid drop impact on solid and liquid surfaces. Fluid Dyn. Res. 12, 61–93.Google Scholar
Rein, M. 1995a Wave phenomena during droplet impact. In IUTAM Symp. on Waves in Liquid/Gas and Liquid/Vapor Two-Phase Systems (ed.S. Morioka & L. van Wijngaarden), pp. 171–190. Kluwer.
Rein, M. 1995b Maximum pressures during hypervelocity liquid-liquid impact. In IUTAM Symp. on Waves in Liquid/Gas and Liquid/Vapor Two-Phase Systems (ed.S. Morioka & L. van Wijngaarden), pp. 191–200. Kluwer.
Rodriguez, F. & Mesler, R. 1985 Some drops don't splash. J. Colloid Interface Sci. 106, 347–352.Google Scholar
Rodriguez, F. & Mesler, R. 1988 The penetration of drop-formed vortex rings into pools of liquid. J. Colloid Interface Sci. 121, 121–129.Google Scholar
Shin, J. & McMahon, T. A. 1990 The tuning of a splash. Phys. Fluids A 2, 1312–1317.Google Scholar
Stasicki, B., Hiller, W. J. & Meier, G. E. A. 1990 Light pulse generator for high speed photography using semiconductor devices as a light source. Opt. Engng 29, 821–827.Google Scholar
Taylor, G. I. 1953 Formation of a vortex ring by giving an impulse to a circular disk and then dissolving it away. J. Appl. Phys. 24, 104–105.Google Scholar
Thompson, J. J. & Newall, H. F. 1885 On the formation of vortex rings by drops falling into liquids, and some allied phenomena. Proc. R. Soc. Lond. 39, 417–436.Google Scholar
Walsh, J. M., Shreffler, R. G. & Willig, F. J. 1953 Limiting conditions for jet formation in high velocity collisions. J. Appl. Phys. 24, 349–359.Google Scholar
Worthington, A. M. 1897 Impact with a liquid surface, studied by the aid of instantaneous photography. Phil. Trans. R. Soc. Lond. A 189, 137–148.Google Scholar
Worthington, A. M. 1900 Impact with a liquid surface studied by the aid of instantaneous photography. Paper II. Phil. Trans. R. Soc. Lond. A 194, 175–199.Google Scholar
Yarin, A. L. & Weiss, D. A. 1995 Impact of drops on solid surfaces: self-similar capillary waves and splashing as a new type of kinematic discontinuity. J. Fluid Mech. 283, 141–173.Google Scholar