Liquid-liquid flow finds a number of applications in chemical petrochemical, food and pharmaceutical industries. In addition, there is a growing interest to transport heavy crude by utilizing a particular distribution of oil and water known as core annular flow. Despite the increasing applications, the literature on liquid-liquid flow is relatively scarce and the present work attempts to investigate the physics of flow through extensive experimentation and numerical analysis.

Gas-liquid-liquid flows are industrially important especially in gas and oil processing. Such flows are inherently unstable and chaotic. Classification and detection of flow patterns is the first step in developing applicable working relation between the flow system parameters - pressure drop, holdup fractions, and phase properties. The book discusses the different flow patterns encountered in gas-liquid-liquid flow through a vertical pipe. Objective identification of the flow patterns based on random signals from an optical probe and their statistical analysis is presented. It also covers analysis of the hydrodynamic parameters - pressure drop and hold up of three phase upflow