Simulation of the effect of viscosity on jet penetration into a single cavitating bubble
(2009) Journal of Applied Physics — Vol. 106, n° 8 (2009)
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- Abstract
- The dynamics of a cavitating bubble in a viscous liquid near a solid surface is numerically calculated. In the model, the two dimensional axisymmetric Navier-Stokes equations are solved for both the compressible gas phase and the incompressible liquid phase on a fixed Cartesian grid. The bubble-liquid interface is tracked by the Volume Of Fluid method. Our numerical model, which explicitly takes into account the liquid viscosity, is first validated against available experimental data from the literature on single laser-induced bubble collapse near a solid surface. Next, the time evolution of the jet front velocity of penetrating jets has been calculated for different values of the viscosity as a function of the so-called stand-off parameter gamma, the latter being characteristic of the distance separating the initial bubble center from the solid surface. Finally, from these data, the maximum jet front velocity has been calculated. Good agreement was obtained with experimental data. Our numerical calculations further predict a maximum in the evolution of the maximum jet front velocity as a function of gamma, the magnitude and position of which decrease with increasing liquid viscosity. Before the maximum, increasing the viscosity gives rise to a strongly diverging maximum jet front velocity with decreasing gamma. (C) 2009 American Institute of Physics. [doi:10.1063/1.3243288]
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Minsier, V., De Wilde, J., & Proost, J. (2009). Simulation of the effect of viscosity on jet penetration into a single cavitating bubble. Journal of Applied Physics, 106(8). https://doi.org/10.1063/1.3243288 (Original work published 2009)