Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core

B. H. Bang, C. S. Ahn, D. Y. Kim, J. G. Lee, H. M. Kim, J. T. Jeong, W. S. Yoon, S. S. Al-Deyab, J. H. Yoo, Suk Goo Yoon, Alexander Yarin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Basic understanding and theoretical description of the expansion and breakup of cylindrical specimens of Newtonian viscous liquid after an explosion of an explosive material in the core are aimed in this work along with the experimental investigation of the discovered phenomena. The unperturbed motion is considered first, and then supplemented by the perturbation growth pattern in the linear approximation. It is shown that a special non-trivial case of the Rayleigh-Taylor instability sets in being triggered by the gas pressure differential between the inner and outer surfaces of the specimens. The spectrum of the growing perturbation waves is established, as well as the growth rate found, and the debris sizes evaluated. An experimental study is undertaken and both the numerical and analytical solutions developed are compared with the experimental data. A good agreement between the theory and experiment is revealed. It is shown that the debris size λ, the parameter most important practically, scales with the explosion energy E as λ ~ E-1/2. Another practically important parameter, the number of fingers N measured in the experiments was within 6%-9% from the values predicted numerically. Moreover, N in the experiments and numerical predictions followed the scaling law predicted theoretically, N ~ m1/2 e, with me being the explosive mass.

Original languageEnglish
Article number094105
JournalPhysics of Fluids
Volume28
Issue number9
DOIs
Publication statusPublished - 2016 Sep 1

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Drop breakup
debris
Explosions
explosions
Debris
perturbation
Taylor instability
Liquids
liquids
scaling laws
gas pressure
Scaling laws
Experiments
expansion
predictions
approximation
Gases
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Bang, B. H., Ahn, C. S., Kim, D. Y., Lee, J. G., Kim, H. M., Jeong, J. T., ... Yarin, A. (2016). Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core. Physics of Fluids, 28(9), [094105]. https://doi.org/10.1063/1.4962409

Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core. / Bang, B. H.; Ahn, C. S.; Kim, D. Y.; Lee, J. G.; Kim, H. M.; Jeong, J. T.; Yoon, W. S.; Al-Deyab, S. S.; Yoo, J. H.; Yoon, Suk Goo; Yarin, Alexander.

In: Physics of Fluids, Vol. 28, No. 9, 094105, 01.09.2016.

Research output: Contribution to journalArticle

Bang, BH, Ahn, CS, Kim, DY, Lee, JG, Kim, HM, Jeong, JT, Yoon, WS, Al-Deyab, SS, Yoo, JH, Yoon, SG & Yarin, A 2016, 'Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core', Physics of Fluids, vol. 28, no. 9, 094105. https://doi.org/10.1063/1.4962409
Bang, B. H. ; Ahn, C. S. ; Kim, D. Y. ; Lee, J. G. ; Kim, H. M. ; Jeong, J. T. ; Yoon, W. S. ; Al-Deyab, S. S. ; Yoo, J. H. ; Yoon, Suk Goo ; Yarin, Alexander. / Breakup process of cylindrical viscous liquid specimens after a strong explosion in the core. In: Physics of Fluids. 2016 ; Vol. 28, No. 9.
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