Review on condensation heat transfer and pressure fluctuation characteristics of gas-liquid two-phase jet flow

Abstract

Vapor jet condensation in fluids is frequently encountered in nature and has extensive applications in aerospace rocket engines, nuclear engineering, and power production. Jet condensation results in severe transient characteristics, including multiscale interfaces and highly turbulent flows. Obtaining an accurate description of the micro-mechanisms of the interface evolution and pressure oscillation and acoustic wave generation is difficult because of the transient characteristics. In this study, the spatiotemporal evolution of gas-liquid multiscale interfaces was systematically reviewed, focusing on the condensation regime map, interfacial behavior, and jet penetration length. Then, the mechanisms regulating vortex structures and their interactions with the multiscale liquid-vapor interface were introduced. Finally, the physical mechanisms of the heat and mass transfer and the resulting pressure oscillation due to the evolution of the multiscale liquid-vapor interface were reviewed. This review summarizes the development of steam jet condensation in pools and pipes and shows values and possible directions for future research, thereby offering a guide for the research and applications of steam jet condensation.