Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8473
Type: Artigo
Title: Non-spherical multi-oscillations of a bubble in a compressible liquid
Author(s)/Inventor(s): Wang, Qian-Xi
Yang, Yuan-Xiang
Tan, Danielle Sweimann
Su, Jian
Tan, Soon Keat
Abstract: Indisponível.
Abstract: Bubble dynamics are associated with wide and important applications in cavitation erosion in many industrial systems, medical ultrasonics and underwater explosions. Two recent developments to this classical problem are reviewed in this paper. Firstly, computational studies on the problem have commonly been based on an incompressible fluid model. However, a bubble usually undergoes significantly damped oscillation due to the compressible effects. We model this phenomenon using weakly compressible theory and a modified boundary integral method. This model considers the energy loss due to shock waves emitted at minimum bubble volumes. Secondly, the computational studies so far have largely been concerned with the first-cycle of oscillation. However, a bubble usually oscillates for a few cycles before it breaks into much smaller ones. We model both the first- and second-cycles of oscillationand predict damped oscillations. Our computations correlate well with the experimental data.
Keywords: Compressible bubble dynamics
Weakly compressible theory
Boundary integral method
Subject CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Department : Núcleo Interdisciplinar de Dinâmica dos Fluidos
Publisher: Springer Verlag
In: Journal of Hydrodynamics
Volume: 26
Issue: 6
Issue Date: 15-Dec-2014
DOI: 10.1016/S1001-6058(14)60093-7
Publisher country: Brasil
Language: eng
Right access: Acesso Aberto
ISSN: 1001-6058
Appears in Collections:Engenharias

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