Kinetics of compressibility in two-phase fluid flows. Final report

A linearized model for transmission of a plane wave through a single component two-phase bubbly mixture was developed. Data from assessment of the compressibility of a single bubble under a pressure pulse were used in a scattering model to predict the speed of sound, and resulting in the determination of the speed of sound as a function of frequency. The results clearly demonstrate the effects of phase change and heat transfer at low frequencies with resonance and cut-off at higher frequencies