Abstract
The process of breakup of a single bubble passing through an orifice and the mechanism of sound generation during the process are described in this paper. A micro jet grows in the downstream direction in a bubble after the bubble passes through the orifice. The bubble then breaks into small bubbles because the micro jet hits the opposite side of the bubble. The sound was found to be generated when the bubble broke. The relationships of breakup position with diameter of a bubble, free stream velocity, pressure difference and a growth rate of the micro jet in a bubble are discussed.
