Hydrodynamics of an inelastic gas with implications for sonochemistry

Details Hydrodynamics of an inelastic gas with implications for sonochemistry Hydrodynamics of an inelastic gas with implications for sonochemistry

2005-10-09

arxiv.org/abs/cond-mat/0510219v1

J. Chem. Phys. 125, 164319 (2006)

Physics

Condensed Matter

Soft Condensed Matter

35 pages, 9 figures

Scientific paper

10.1063/1.2357150

The hydrodynamics for a gas of hard-spheres which sometimes experience inelastic collisions resulting in the loss of a fixed, velocity-independent, amount of energy $\Delta $ is investigated with the goal of understanding the coupling between hydrodynamics and endothermic chemistry. The homogeneous cooling state of a uniform system and the modified Navier-Stokes equations are discussed and explicit expressions given for the pressure, cooling rates and all transport coefficients for D-dimensions. The Navier-Stokes equations are solved numerically for the case of a two-dimensional gas subject to a circular piston so as to illustrate the effects of the enegy loss on the structure of shocks found in cavitating bubbles. It is found that the maximal temperature achieved is a sensitive function of $\Delta $ with a minimum occuring near the physically important value of $\Delta \sim 12,000K \sim 1eV$

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