Pickup (critical) velocity of particles

Haim Kalman, Andrei Satran, Dikla Meir, Evgeny Rabinovich

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

This work presents experimental results on pickup velocity (critical velocity) measurements for a variety of particulate solids. The present experiments together with previously published experiments of a number of researchers encompass about 100 measurements of 24 materials for a wide range of particle sizes, shapes and densities. Based on the experimental results, three zones are defined by establishing simple relationships between the Reynolds and Archimedes numbers. The empirical relationships were further modified by taking into account the pipe diameter and particle shape (sphericity). The three-zone model was shown to reasonably correlate to Geldart's classification groups.

Original languageEnglish
Pages (from-to)103-113
Number of pages11
JournalPowder Technology
Volume160
Issue number2
DOIs
StatePublished - 6 Dec 2005

Keywords

  • Critical velocity
  • Particle shape
  • Pickup velocity
  • Pneumatic conveying

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