Flow regime chart for pneumatic conveying

Haim Kalman, Anubhav Rawat

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Dense phase pneumatic conveying is preferred by industry over dilute phase flow due to its advantages. Models enabling to calculate pressure drop are worthless for a designer if he is unable to predict in advance the mode of conveying. Therefore, this research is focused on developing a new flow regime chart. Based on hundreds of experiments all required threshold velocities are defined by Reynolds number as a simple power function of Archimedes number. This work, revealed two new kind of plugs unknown before. Using the threshold functions a new flow regime chart was plotted By comparing the results to previously published models characterizing only the material properties revealed that the feeder is probably have a major role controlling the final mode of flow. Taking into account the findings in this paper, one might have ideas of how to improve the feeders in order to fully fulfill the flow potential.

Original languageEnglish
Article number115256
JournalChemical Engineering Science
StatePublished - 16 Jan 2020


  • Dilute phase flow
  • Dune flow
  • Flow regime chart
  • Plug flow
  • Pneumatic conveying

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering


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