Accession Number : AD0415796

Title :   PHYSICS OF MICROBUBBLES,

Corporate Author : VITRO LABS SILVER SPRING MD

Personal Author(s) : Turner,W. R.

Report Date : 30 AUG 1963

Pagination or Media Count : 114

Abstract : A bubble model is developed in which a compressed wall of particles supports a portio of the hydrostatic pressure, neutralizing the out-diffusion of gas and the buoyancy to produce stabilization. Other suggested effects are an increase of bubble resonant frequency, a reduction of damping, and a critical size marking a transition between a radius controlled cavitation threshold to one primary controlled by the dissolved gas pressure. The implications to cavitation and sound propagation are explored. Scattered experimental evidence suggests that microbubble concentrations occasionally exceed critical limits. (Author)

Descriptors :   (*BUBBLES, PHYSICAL PROPERTIES), (*CAVITATION, THEORY), NUCLEATION, UNDERWATER SOUND, ULTRASONIC PROPERTIES, SOUND TRANSMISSION, ATTENUATION, STABILITY, WATER

Distribution Statement : APPROVED FOR PUBLIC RELEASE