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Simulation of the shock-induced dynamics of bubble arrays

Shukla, Ratnesh and Zhao, Hong and Pantano, Carlos and Austin, Joanna and Freund, Jonathan (2008) Simulation of the shock-induced dynamics of bubble arrays. Bulletin of the American Physical Society, 53 (15). ISSN 0003-0503.

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Simulation of shock-induced collapse of air bubbles in a stiff medium, such as water, poses a significant challenge to conventional shock-capturing schemes. Previous studies have often been limited to relatively low density and pressure ratios along with simplified equations of state, due to the spurious oscillations which develop at the bubble medium interface. We present results utilizing a high-fidelity shock capturing multi-material compressible-flow solver, which combines the features of a level-set method and a moving mesh technique. We demonstrate application of our numerical methodology to the collapse of arrays of bubbles after they are impulsively accelerated by a planar shock. The role of the strength of the incident shock and initial bubble configuration in the subsequent motion and merger of the bubbles is investigated. Comparison of the full compressible solutions with a vortex-sheet model initialized with the baroclinic vorticity deposited during the interface-shock interaction show good agreement with respect to the motion of the bubbles.

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Additional Information:© 2008 American Physical Society. Date submitted: 28 Jul 2008. Abstract ID: BAPS.2008.DFD.MF.7.
Issue or Number:15
Record Number:CaltechAUTHORS:20141007-134718535
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50238
Deposited By: Tony Diaz
Deposited On:07 Oct 2014 23:35
Last Modified:03 Oct 2019 07:21

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