Do we need sub-grid scale corrections for both continuum and discrete gas-particle flow models?

Sofiane Benyahia, Sankaran Sundaresan

Research output: Contribution to journalArticle

61 Scopus citations

Abstract

Continuum and discrete multi-phase particle-in-cell (MP-PIC) simulation results of gas-particle flow in a 2D periodic domain are presented. Grid refinement revealed heterogeneous flow structures that increase the domain-averaged gas-particle slip velocity to about 2.5-3 times to that for homogeneous flow. Similar need for grid refinement was demonstrated for both continuum and discrete approaches. Both approaches yielded nearly identical results. If coarse grids are used in simulations, both approaches should therefore employ corrections to account for the effects of sub-grid scale structures.

Original languageEnglish (US)
Pages (from-to)2-6
Number of pages5
JournalPowder Technology
Volume220
DOIs
StatePublished - Apr 1 2012

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Keywords

  • Continuum-based models
  • Discrete particle models
  • Gas-solid flows
  • Multi-phase particle-in-cell
  • Sub-grid scale corrections

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