A numerical study of planar wave instabilities in liquid-fluidized beds

Jos Derksen, Sankaran Sundaresan

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations

Abstract

We present direct simulations with interface resolution of dense, fluidized solidliquid suspensions. The flow of interstitial fluid is solved by the lattice-Boltzmann method (LBM). The monodisperse, spherical particles move under the influence of gravity, hydrodynamic forces stemming from the LBM, subgrid-scale lubrication forces, and hard-sphere collisions. The cases we study have been derived from the experimental work by Duru et al. [1]. We first show that the experimentally observed waves are well represented by the simulations. Subsequently we use the detailed information contained in the simulation results to assess two-fluid closures, with a focus on the role of compaction and dilation of the particle phase.

Original languageEnglish (US)
Title of host publicationIUTAM Symposium on Computational Approaches to Multiphase Flow
PublisherKluwer Academic Publishers
Pages89-98
Number of pages10
ISBN (Print)9781402049767
DOIs
StatePublished - 2006

Publication series

NameFluid Mechanics and its Applications
Volume81
ISSN (Print)0926-5112

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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