A coupled CFD-DEM model for fluid-particle flows with free surface: Formulation and validation

L. Jing, C. Y. Kwok, Yat Fai Leung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

A coupled Computational Fluid Dynamics and Discrete Element Method (CFD-DEM) model is presented for fluid-particle flows with free fluid surface. The fluid flow is modeled by solving the locally averaged Navier-Stokes equations, and the particle motions are captured separately in the DEM. Fluid-particle interactions are taken into consideration by exchanging necessary information between the CFD and the DEM. A numerical solver, referred to as cfdemSolverVOF in this study, is developed to capture the dynamics of the free fluid surface within the CFD-DEM framework. This is achieved by applying an advection equation to solve the volume fraction of the liquid in each fluid cell, in the spirit of the Volume of Fluid (VOF) method. Different components of the developed numerical solver are verified and validated in the dam break case and sedimentation of particle tests. The numerical predictions agree well with the analytical/empirical solutions.
Original languageEnglish
Title of host publicationGeomechanics from Micro to Macro - Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
PublisherTaylor and Francis - Balkema
Pages485-490
Number of pages6
Volume1
ISBN (Print)9781138027077
Publication statusPublished - 1 Jan 2015
EventInternational Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014 - Cambridge, United Kingdom
Duration: 1 Sep 20143 Sep 2014

Conference

ConferenceInternational Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
CountryUnited Kingdom
CityCambridge
Period1/09/143/09/14

ASJC Scopus subject areas

  • Geophysics

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