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Droplet Breakup in High-Speed Gas Flows

Meng, Jomela C. and Colonius, Tim (2013) Droplet Breakup in High-Speed Gas Flows. In: 8th International Conference on Multiphase Flow (ICMF 2013), May 26–31, 2013, Jeju, Korea.

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Numerical simulations are performed to study the breakup of water cylinders in the flow behind normal shocks. The computational setup is similar to previous experiments (Igra and Takayama, 2001, 2003). We examine the qualitative features of the so-called stripping breakup observed in the numerical results. Two interesting flow features are discussed: the existence of recirculation regions and an upstream jet in the wake. Various integral quantities associated with the cylinder’s deformation and acceleration are computed and compared with the experimental results, with generally good agreement. Furthermore, calculations of the velocity and acceleration of the cylinder’s center of mass provide an estimate of the unsteady drag coefficient which is approximately constant over the initial breakup period.

Item Type:Conference or Workshop Item (Paper)
Meng, Jomela C.0000-0002-8966-2291
Colonius, Tim0000-0003-0326-3909
Additional Information:Presented at the "8th International Conference on Multiphase Flow, ICMF 2013, Jeju, Korea, May 26–31, 2013. #2013-488. Acknowledgments: We are grateful to Vedran Coralic who developed the flow solver and graciously shared the source code with us. Also, thanks to Guillaume Blanquart for his insight and guidance in many useful discussions.
Subject Keywords:breakup, deformation, droplet, shock-cylinder interaction, stripping, unsteady drag coefficient
Record Number:CaltechAUTHORS:20160526-114025207
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67395
Deposited By: Katherine Johnson
Deposited On:26 May 2016 18:48
Last Modified:09 Mar 2020 13:19

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