Pressure Drop in a Vapor-Droplets System due to Vapor Condensation on the Surface of Droplets

摘要

Introduction In this study, the process of phase transition that occurs at the interface during the injection of liquid droplets into a vapor medium is considered, as applied to operational analysis of sprinkler systems that inject droplets into a vapor under conditions of an abnormal pressure increase. The process is considered using the cellular model, i.e., for a "sample" droplet surrounded by a spherical cell [1]. Non-steady-state growth and evaporation of droplets in a gas medium were discussed in [2]. The evaporation of a single droplet of a liquefied gas that is located at the center of a vapor bubble is considered in [3]. The objective of this study is to derive an analytical relationship for the rate of pressure drop during the injection of cold droplets into a vapor due to vapor condensation on droplets.