We consider the problem of propagation high-intensity acoustic waves in a bubble layer consisting spherical bubbles identical size with uniform distribution. The mathematical model is coupled system partial differential equations for pressure and instantaneous radius wave equation Rayleigh–Plesset equation. perform an analytic analysis based on study Lie symmetries this equations, concentrating...

Two-phase flow pattern, pressure drop, and void fraction in vertical transparent pipe of x m internal diameter y length is investigated experimentally. The rig designed to achieve the measurements drop for different combinations phase superficial velocities such that regimes encountered are bubbly, slug annular, which required a wide range water air velocities.

Numerical simulations of the gas-liquid bubbly flow in a bubble column were conducted with the commercial CFD package CFX-4.4 to investigate the performance of three models (Pfleger and Becker, 2001; Sato and Sekoguchi, 1975; Troshko and Hassan, 2001) to account for the bubble-induced turbulence in the k-ε model. Furthermore, the effect of two different interfacial closure models was investigat...