Toward constitutive models for momentum, species, and energy transport in gas-particle flows

Sankaran Sundaresan, Ali Ozel, Jari Kolehmainen

Research output: Contribution to journalArticlepeer-review

143 Scopus citations


As multiscale structures are inherent in multiphase flows, constitutive models employed in conjunction with transport equations for momentum, species, and energy are scale dependent. We suggest that this scale dependency can be better quantified through deep learning techniques and formulation of transport equations for additional quantities such as drift velocity and analogies for species, energy, and momentum transfer. How one should incorporate interparticle forces, which arise through van der Waals interaction, dynamic liquid bridges between wet particles, and tribocharging, in multiscale models warrants further study. Development of multiscale models that account for all the known interactions would improve confidence in the use of simulations to explore design options, decrease the number of pilot-scale experiments, and accelerate commercialization of new technologies.

Original languageEnglish (US)
Pages (from-to)61-81
Number of pages21
JournalAnnual Review of Chemical and Biomolecular Engineering
StatePublished - 2018

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering


  • Coarse-graining
  • Fluidization
  • Gas-particle flow
  • Triboelectrification
  • multiscale modeling


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