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- W1479975141 abstract "Cavitation occurs in a variety of non-Newtonian fluids and viscoelastic materials. The large-amplitude volumetric oscillations of cavitation bubbles give rise to high temperatures and pressures at collapse, as well as induce large and rapid deformation of the surroundings. In this work, we develop a comprehensive numerical framework for spherical bubble dynamics in isotropic media obeying a wide range of viscoelastic constitutive relationships. Our numerical approach solves the compressible Keller-Miksis equation with full thermal effects (inside and outside the bubble) when coupled to a highly generalized constitutive relationship (which allows Newtonian, Kelvin-Voigt, Zener, linear Maxwell, upper-convected Maxwell, Jeffreys, Oldroyd-B, Giesekus, and Phan-Thien-Tanner models). For the latter two models, partial differential equations (PDEs) must be solved in the surrounding medium; for the remaining models, we show that the PDEs can be reduced to ordinary differential equations. To solve the general constitutive PDEs, we present a Chebyshev spectral collocation method, which is robust even for violent collapse. Combining this numerical approach with theoretical analysis, we simulate bubble dynamics in various viscoelastic media to determine the impact of relaxation time, a constitutive parameter, on the associated physics. Relaxation time is found to increase bubble growth and permit rebounds driven purely by residual stresses in the surroundings. Different regimes of oscillations occur depending on the relaxation time." @default.
- W1479975141 created "2016-06-24" @default.
- W1479975141 creator A5048683261 @default.
- W1479975141 creator A5081692041 @default.
- W1479975141 date "2015-06-01" @default.
- W1479975141 modified "2023-10-03" @default.
- W1479975141 title "Numerical modeling of bubble dynamics in viscoelastic media with relaxation" @default.
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- W1479975141 doi "https://doi.org/10.1063/1.4922598" @default.
- W1479975141 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4474959" @default.
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- W1479975141 hasPublicationYear "2015" @default.
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