Experimental study of occlusion break surge volume in 3 different phacoemulsification systems.

Purpose: To evaluate surge volume after occlusion breaks in 3 different phacoemulsification systems.

Setting: Alcon Research LLC, Lake Forest, California.

Design: Experimental study.

Acoustic streaming of a sharp edge.

Anomalous acoustic streaming is observed emanating from sharp edges of solid bodies that are vibrating in fluids. The streaming velocities can be orders of magnitude higher than expected from the Rayleigh streaming at similar amplitudes of vibration. Acoustic velocity of fluid relative to a solid body diverges at a sharp edge, giving rise to a localized time-independent body force acting on the fluid.