Dynamics of a spherical cavity under various conditions

We study the influence of the initial radius of the cavity, the time of energy input, and the distance to a solid wall on the parameters of a spherical cavity during electrical discharge in a liquid. The motion of the liquid was studied in gas-dynamic formulation. The solution is given by various finite-difference methods. To compute prolonged processes in large volumes we developed special adaptable mobile grids whose step was determined by the current radius of the cavity and the distance from the cell to the center. The results of the computation are in good agreement with experimental data obtained by other authors. Four figures. Bibliography: 7 titles. Translated fromTeoreticheskaya i Prikladnaya Mekhanika, No. 28, 1998, pp. 146–151.