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A Look into the bubble interior by molecular dynamics simulation

Lauterborn, Werner and Kurz, Thomas and Schanz, Daniel (2012) A Look into the bubble interior by molecular dynamics simulation. 8th International Symposium on Cavitation, 14. - 16. Aug. 2012, Singapore. DOI: 10.3850/978-981-07-2826-7 062. ISBN 978-981-07-2826-7.

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Official URL: http://www.cav2012.sg/index.html

Abstract

The interior dynamics of a collapsing and rebounding cavitation bubble is investigated by means of molecular dynamics (MD) simulations. A hard sphere model for the species inside the bubble is adopted. The dynamics of the surrounding liquid (water) is modeled by a Rayleigh-Plesset (RP) type equation coupled to the bubble interior by the gas pressure at the wall obtained from the MD calculations. Water vapor and vapor chemistry are included in the hybrid RP-MD model as well as mass and energy transfer through the bubble wall. Calculations are done for bubbles at conditions typical for single bubble sonoluminescence and for small bubbles driven atMHz frequencies to determine the evolution of temperature, density and pressure within a bubble and to predict how the particle numbers and densities of different vapor dissociation and reaction products in the bubble develop in space and time. Among the parameters varied are the bubble size, the sound pressure amplitude of the driving sound field, the frequency of the sound field and the noble gas mixture in the bubble.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:A Look into the bubble interior by molecular dynamics simulation
Authors:
AuthorsInstitution or Email of Authors
Lauterborn, WernerDrittes Physikalisches Institut, Universität Göttingen
Kurz, ThomasDrittes Physikalisches Institut, Universität Göttingen
Schanz, DanielUNSPECIFIED
Date:2012
Refereed publication:No
In Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
DOI:10.3850/978-981-07-2826-7 062
Page Range:pp. 778-783
Series Name:Proceedings of the Eighth International Symposium on Cavitation (CAV 2012)
ISBN:978-981-07-2826-7
Status:Published
Keywords: molecular dynamics (MD) simulations, surrounding liquid (water), single bubble sonoluminescence
Event Title:8th International Symposium on Cavitation
Event Location:Singapore
Event Type:international Conference
Event Dates:14. - 16. Aug. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:21 Sep 2012 15:29
Last Modified:09 Oct 2012 15:05

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