Dynamics of a laser-induced buoyant bubble near a vertical rigid boundary

Abstract

In engineering where cavitation occurs, pressure around the cavitation bubble is usually distributed nonuniformly. We focus on the intermediate jet formed during nonspherical collapse of a buoyant cavitation bubble near a rigid vertical boundary, where pressure gradients due to gravity and the rigid boundary are mutually perpendicular. A series of jets with different directions and intensities are obtained from experiment. Jet directions and scaling laws of the dimensionless jet velocity versus combinations of pressure anisotropy parameters are found. The results provide additional information on nonspherical cavitation bubble dynamics under the simultaneous influence of multiple factors.

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