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Evolution of the ejecta sheet from the impact of a drop with a deep pool

  • L. V. Zhang (a1), J. Toole (a1), K. Fezzaa (a2) and R. D. Deegan (a1)
Abstract
Abstract

We used optical and X-ray imaging to observe the formation of jets from the impact of a single drop with a deep layer of the same liquid. For high Reynolds number there are two distinct jets: the thin, fast and early-emerging ejecta; and the slow, thick and late-emerging lamella. For low Reynolds number the two jets merge into a single continuous jet, the structure of which is determined by the distinct contributions of the lamella and the ejecta. We measured the emergence time, position and speed of the ejecta sheet, and find that these scale as power laws with the impact speed and the viscosity. We identified the origin of secondary droplets with the breakup of the lamella and the ejecta jets, and show that the size of the droplets is not a good indicator of their origin.

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Corresponding author
Email address for correspondence: rddeegan@umich.edu
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1.J. Butterworth & H. A. McCartney 1991 The dispersal of bacteria from leaf surfaces by water splash. J. Appl. Bacteriol. 71 (6), 484496.

3.G. E. Cossali , M. Marengo , A. Coghe & S. Zhdanov 2004 The role of time in single drop splash on thin film. Exp. Fluids 36 (6), 888900.

4.M. R. Davidson 2002 Spreading of an inviscid drop impacting on a liquid film. Chem. Engng Sci. 57 (17), 36393647.

5.R. D. Deegan , P. Brunet & J. Eggers 2008 Complexities of splashing. Nonlinearity 21 (1), C1C11.

6.K. Fezzaa & Y. J. Wang 2008 Ultrafast X-ray phase-contrast imaging of the initial coalescence phase of two water droplets. Phys. Rev. Lett. 100 (10), 104501.

8.J. B. Keller , A. King & L. Ting 1995 Blob formation. Phys. Fluids 7 (1), 226228.

10.M. Pasandideh-Fard , S. D. Aziz , S. Chandra & J. Mostaghimi 2001 Cooling effectiveness of a water drop impinging on a hot surface. Intl J. Heat Transfer Fluid Flow 22 (2), 201210.

11.M. Rein 1993 Phenomena of liquid drop impact on solid and liquid surfaces. Fluid Dyn. Res. 12 (2), 6193.

17.S. T. Thoroddsen , M. J. Thoraval , K. Takehara & T. G. Etoh 2011 Droplet splashing by a slingshot mechanism. Phys. Rev. Lett. 106 (3), 034501.

18.R. Wanninkhof , W. E. Asher , D. T. Ho , C. Sweeney & W. R. McGillis 2009 Advances in quantifying air–sea gas exchange and environmental forcing. Annu. Rev. Marine Sci. 1, 213244.

21.A. L. Yarin 2006 Drop impact dynamics: splashing, spreading, receding, bouncing. Annu. Rev. Fluid Mech. 38, 159192.

23.L. V. Zhang , P. Brunet , J. Eggers & R. D. Deegan 2010 Wavelength selection in the crown splash. Phys. Fluids 22 (12), 122105.

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Journal of Fluid Mechanics
  • ISSN: 0022-1120
  • EISSN: 1469-7645
  • URL: /core/journals/journal-of-fluid-mechanics
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