Direction of the microjet produced by the collapse of a cavitation bubble located in a corner of a wall and a free surface

A cavitation bubble is harmful to machines as it issues a fast microjet when it collapses near the boundary. This work focusses on a bubble located in a corner of a wall and a free surface, where both boundaries alter the jet direction. We present a simplified model to describe the jet direction as a function of the bubble location, which agrees with that measured in high-speed observation. This may give some insight for avoiding cavitation-induced damage in practical designs.