Three-component volume of fluid method coupling with interface compression method and Eulerian–Lagrangian spray atomization surface density model for prediction of cavitating sprays

Abstract

In this work, a new three phase cavitation model with Eulerian–Lagrangian Spray Atomization (ELSA) and Interface Capturing Method (ICM) coupling is presented to allow for, in a unified approach, physical insight of the surface evolution of cavitating sprays at the Sub-Grid Scale (SGS). Phase change is accounted for in the framework via mass transfer across a liquid and corresponding vapor phase. The surface density model was validated against direct numerical simulation data of an atomizing jet with a systematic variation of mesh resolutions. The sensitivity of the adjustable parameters such as the critical Weber number was also demonstrated. Then, experimental comparisons were made with a more realistic orthogonal spray geometry within a cavitating and turbulent non-cavitating system. These comparisons include both large scale visualizations and small scale SGS quantities such as the Sauter mean diameter. To our knowledge, this is the first study that presents the performance of a three phase cavitating framework with SGS ELSA-ICM coupling.

Digital Flow in a Pool Induced by a Vertical Jet

“…This Eulerian formulation dedicated to jet atomization is a quasi-multiphase Eulerian (QME) approach and was used to simulate "salte del Angel". Recently, this model has been investigated for application in other related applications, for example, cavitating sprays by McGinn et al [29] and flash evaporation by Gratner and Kronenburg [30] .…”

Primary breakup of a jet coupled with vortex-induced string cavitation in a fuel injector nozzle

“…These advantages make it highly suitable for studies of cavitating jet breakup. 50 Therefore, the LES-VoF method, in which the in-nozzle string cavitation flow is directly coupled with the primary jet in a unified computation domain, is adopted in the present study.…”