Comparison of kinetic theory evaporation models for liquid thin-films. (July 2019)

• Record Type: Journal Article
• Authors: Aursand, Eskil; Ytrehus, Tor
• Is Part Of: International journal of multiphase flow. Volume 116(2019)
• Page Start: 67
• Page End: 79
• Publication Date: 2019-07
• Subjects: Evaporation -- Thin-film -- Non-equilibrium -- Kinetic theory -- Moment method; Multiphase flow -- Periodicals; Écoulement polyphasique -- Périodiques; Multiphase flow; Periodicals; 620.1064
• DOI: 10.1016/j.ijmultiphaseflow.2019.04.007
• Languages: English
• ISSNs: 0301-9322

Abstract

Highlights: Kinetic-theory evaporation models may describe non-equilibrium evaporation. Liquid films on the micrometer scale require non-equilibrium models. The Moment Method is able to predict the interface temperature jump. Linearized evaporation models are sufficient in thin film evaporation. Abstract: We summarize the background and derivation of non-equilibrium evaporation models from kinetic theory, and demonstrate how they may be applied in the context of fluid mechanics and heat transfer problems. We find that the linearized Boltzmann-equation Moment Method is a good trade-off between complexity and accuracy for practical purposes, and that the use of non-equilibrium evaporation models in general has significant quantitative and qualitative impact on the results.