Dispersed multiphase flows: advances in measuring, simulation and modeling

Abstract

Dispersed multiphase flows are commonly encountered in a wide variety of natural and industrial applications, from sedimentation in rivers and plankton surfacing in oceanic flows to fluidized bed in chemical reactors and pneumatic conveying systems. In these flows, a dispersed phase (consisting of particles, droplets and/or bubbles) is transported by a carrier phase. The interaction between the phases results in complex dynamics (e.g., transport, spatial clustering, and deformation or break-up) that is rich in physics and poses a wide spectrum of theoretical, computational, and experimental challenges. These challenges are at the very core of the research efforts made by the multiphase flow community over the past decades.Our motivation to publish a special issue focused on some of the recent advances in the measuring, simulation, and modeling of dispersed multiphase flows, arose during the 1st BICTAM-CISM Symposium "Dispersed Multiphase Flows: from Measuring to Modeling", which was co-organized by Beijing International Center for Theoretical and Applied Mechanics (BICTAM) and International Centre for Mechanical Sciences (CISM) in 2021. Due to the restrictions imposed by the Covid-19 pandemic, the symposium was held as a virtual event from March 2, 2021 to March 5, 2021. More than 70 experts and scholars from 12 countries,

Advances of Phase-Field Model in the Numerical Simulation of Multiphase Flows: A Review

“…Taking into account the double-sided model with equal diffusivity in liquid and solid phases, It should be noted that, actually, the phenomena and applications of multiphase flow systems are complex. There are also other simulation methods that are widely used, such as the family of discrete particle methods [106][107][108] for dense particle systems, the methods with point particle approximation [109,110] for dispersed multiphase flows, etc. In this paper, we only mainly focused on the PFM.…”