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The effect of ambient pressure on ejecta sheets from free-surface ablation

  • J. O. Marston
  • M. M. Mansoor
  • S. T. Thoroddsen
  • T. T. Truscott
Research Article

Abstract

We present observations from an experimental study of the ablation of a free liquid surface promoted by a focused laser pulse, causing a rapid discharge of liquid in the form of a very thin conical-shaped sheet. In order to capture the dynamics, we employ a state-of-the-art ultra-high-speed video camera capable of capturing events at \(5 \times 10^{6}\) fps with shutter speeds down to 20 ns, whereby we were able to capture not only the ejecta sheet, but also the shock wave, emerging at speeds of up to 1.75 km/s, which is thus found to be hypersonic (Mach 5). Experiments were performed at a range of ambient pressures in order to study the effect of air drag on the evolution of the sheet, which was always observed to dome over, even at pressures as low as 3.8 kPa. At reduced pressures, the extended sheet evolution led to the formation of interference fringe patterns from which, by comparison with the opening speed of rupture, we were able to determine the ejecta thickness.

Keywords

Ambient Pressure Sheet Thickness Fringe Pattern Suction Pressure Water Entry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The research was partially funded by KAUST Office of Competitive Research Funds. The authors thank Jesse Belden for assistance with the interferometry calculations.

Supplementary material

348_2016_2141_MOESM1_ESM.wmv (21.6 mb)
Supplementary material 1 (wmv 22114 KB)
348_2016_2141_MOESM2_ESM.wmv (25.2 mb)
Supplementary material 2 (wmv 25786 KB)

References

  1. Apitz I, Vogel A (2005) Material ejection in nanosecond Er:YAG laser ablation of water, liver, and skin. Appl Phys A 81:329–338CrossRefGoogle Scholar
  2. Aristoff JM, Bush JWM (2009) Water entry of small hydrophobic spheres. J Fluid Mech 619:45–78MathSciNetCrossRefzbMATHGoogle Scholar
  3. Armstrong RL (1984) Aerosol heating and vaporization by pulsed light beams. Appl Opt 23:148–155CrossRefGoogle Scholar
  4. Bird JC, de Ruiter R, Courbin L, Stone HA (2010) Daughter bubble cascades produced by folding of ruptured thin films. Nature 465:759–762CrossRefGoogle Scholar
  5. Carls JC, Brock JR (1988) Propagation of laser breakdown and detonation waves in transparent droplets. Opt Lett 13:273–275CrossRefGoogle Scholar
  6. Chen RCC, Yu YT, Su KW, Chen JF, Chen YF (2013) Exploration of water jet generated by Q-switched laser induced water breakdown with different depths beneath a flat free surface. Opt Express 21:445–453CrossRefGoogle Scholar
  7. Chitanvis SM (1986) Explosion of water droplets. Appl Opt 25:1837–1839CrossRefGoogle Scholar
  8. Choo YJ, Kang BS (2001) Parametric study on impinging-jet liquid sheet thickness distribution using an interferometric method. Exp Fluids 31:56–62CrossRefGoogle Scholar
  9. de Ruiter J, MUgele F, van den Ende D (2015) Air cushioning in droplet impact I. Dynamics of thin films studied by dual wavelength reflection interference microscopy. Phys Fluids 27:012104CrossRefGoogle Scholar
  10. de Ruiter J, MUgele F, van den Ende D (2015) Air cushioning in droplet impact II. Experimental characterization of the air film evolution. Phys Fluids 27:012105CrossRefGoogle Scholar
  11. Eickmans JH, Hsieh W-F, Chang RK (1987) Laser-induced explosion of H2O droplets: spatially resolved spectra. Opt Lett 12:22–24CrossRefGoogle Scholar
  12. Gillbarg D, Anderson R (1948) Influence of atmospheric pressure on the phenomena accompanying the entry of spheres into water. J Appl Phys 19:127–139CrossRefGoogle Scholar
  13. Heijnen L, Quinto-Su PA, Zhao X, Ohl C-D (2009) Cavitation within a droplet. Phys Fluids 21:091102CrossRefzbMATHGoogle Scholar
  14. Hsieh W-F, Zheng J-B, Wood CF, Chu BT, Chang RK (1987) Propagation velocity of laser-induced plasma inside and outside a transparent droplet. Opt Lett 12:576–578CrossRefGoogle Scholar
  15. Kafalas P, Herrmann J (1973) Dynamics and energetics of the explosive vaporization of fog droplets by a 10.6-μm laser pulse. Appl Opt 12:772–775CrossRefGoogle Scholar
  16. Lee M, Longoria RG, Wilson DE (1997) Cavity dynamics in high-speed water entry. Phys Fluids 9:540–550MathSciNetCrossRefzbMATHGoogle Scholar
  17. Lhuissier H, Villermaux E (2012) Bursting bubble aerosols. J Fluid Mech 696:5–44CrossRefzbMATHGoogle Scholar
  18. Lindinger A, Hagen J, Socaciu LD, Bernhardt TM, Woste L, Duft D, Leisner T (2004) Time-resolved explosion dynamics of H2O droplets induced by femtosecond laser pulses. Appl Opt 43:5263CrossRefGoogle Scholar
  19. Marston JO, Thoroddsen ST (2015) 2015 Laser-induced micro-jetting from armored droplets. Exp Fluids 56:140CrossRefGoogle Scholar
  20. Marston JO, Mansoor MM, Truscott TT, Thoroddsen ST (2015) Buckling instability of crown sealing. Phys Fluids 27:091112CrossRefGoogle Scholar
  21. May A (1952) Vertical entry of missiles into water. J Appl Phys 22:1362–1372CrossRefGoogle Scholar
  22. Savva N, Bush JWM (2009) Viscous sheet retraction. J Fluid Mech 626:211–240MathSciNetCrossRefzbMATHGoogle Scholar
  23. Tagawa Y, Oudalov N, Visser CW, Peters IR, van der Meer D, Sun C, Prosperetti A, Lohse D (2012) Highly focused supersonic microjets. Phys Rev X 2:031002zbMATHGoogle Scholar
  24. Thoraval M-J, Takehara K, Etoh TG, Popinet S, Ray P, Josserand C, Zaleski S, Thoroddsen ST (2012) von Karman vortex street within an impacting drop. Phys Rev Lett 108:264506CrossRefGoogle Scholar
  25. Thoroddsen ST, Takehara K, Etoh TG, Ohl C-D (2009) Spray and microjets produced by focusing a laser pulse into a hemispherical drop. Phys Fluids 21:112101CrossRefzbMATHGoogle Scholar
  26. Thoroddsen ST, Thoraval M-J, Takehara K, Etoh TG (2011) Droplet splashing by a slingshot mechanism. Phys Rev Lett 106:034501CrossRefGoogle Scholar
  27. Villermaux E (2007) Fragmentation. Annu Rev Fluid Mech 39:419–446MathSciNetCrossRefzbMATHGoogle Scholar
  28. Zhiyuan Z, Hua G, Zhenjun F, Jie X (2014) Characteristics of droplets ejected from liquid propellants ablated by laser pulses in laser plasma propulsion. Plasma Sci Technol 16:251–254CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • J. O. Marston
    • 1
  • M. M. Mansoor
    • 2
  • S. T. Thoroddsen
    • 2
  • T. T. Truscott
    • 3
  1. 1.Department of Chemical EngineeringTexas Tech UniversityLubbock USA
  2. 2.Division of Physical Sciences and EngineeringKing Abdullah University of Science and TechnologyThuwalSaudi Arabia
  3. 3.Department of Mechanical and Aerospace EngineeringUtah State UniversityLogan USA

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