<正> A Free-Lagrange CFD code is used to model in axisymmetric form the near-field interactions between a lithotripter shock wave and a single spherical air bubble near a rigid boundary in water. The asymmetric collapse of the bubble is induced by the relatively strong incident lithotripter shock wave, and influenced by the presence of the rigid boundary in the vicinity of the bubble. These two factors are contributory elements to a full description of the bubble collapse processes. The bubble collapses and undergoes jetting, which consequently generates a blast wave into the surrounding water owing to a liquid-liquid impact. Following impact, the bubble attains a toroidal shape and undergoes subsequent expansion. A detailed description of the shock/bubble interaction event is given, which includes the primary collapse and pressure-time histories on the rigid boundary.
wave;Shock/bubble interaction near a rigid boundary in shock wave lithotripsy;
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