Publication: Numerical Modeling of Evaporation and Combustion of Isolated Liquid Fuel Droplets: a Review
Date
01-03-2019
Authors
Raghavan, Vasudevan
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Understanding the transport processes during evaporation and combustion of isolated liquid fuel droplet is highly important in several applications involving sprays. Comprehensive numerical models assist in carrying out simulations involving interlinked transport processes in liquid and gas phases using proper interface coupling conditions. The predictions from such numerical models reveal flow, temperature and species fields, with which the evaporation, as well as combustion characteristics, can be thoroughly analyzed. In this article, a detailed review of numerical models used to simulate evaporation of isolated droplets under several operating conditions is presented. This includes evaporation in high-pressure conditions, where real gas effects and solubility of ambient gas into the liquid droplet, come into play. Subsequently, a review of droplet combustion models, which are comprehensive enough to reveal the burning characteristics of an isolated droplet, is presented. Importance of liquid phase motion on evaporation and combustion behavior and water absorption in the case of alcohol droplets are reported. This review also includes modeling concepts applied to multi-component droplets.
Description
Keywords
Ambient gas solubility, Evaporation and combustion, High-pressure evaporation model, Interface coupling, Isolated droplet, Liquid-phase motion, Marangoni convection