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


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
Number of pages10
ISBN (Print)9781402049767
StatePublished - 2006

Publication series

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

All Science Journal Classification (ASJC) codes

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


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