Experimental determination of length-dependent saltation velocity in dilute flows

M. Hubert, H. Kalman

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Determination of saltation velocity is one of the key design parameters in pneumatic conveying systems. The aim of this work is to study the mechanism of saltation. Experimental results of measurements of saltation velocity in wind tunnel with very dilute flow are presented. Experiments were carried out with alumina spheres, glass beads, metal balls, sand, potassium sulphate and potash. The relationship between saltation velocity and the maximum conveying length (saltation length) is shown. The boundary saltation velocity was defined as the saltation velocity at which particulate solids can be conveyed for significant (long) distances. The influence of the feeding method (forced or gravitational feeding) and conditions on saltation velocity and length was investigated.

Original languageEnglish
Pages (from-to)156-166
Number of pages11
JournalPowder Technology
Volume134
Issue number1-2
DOIs
StatePublished - 5 Aug 2003

Keywords

  • Boundary saltation velocity
  • Dilute flow
  • First contact length
  • Gas-solid flow
  • Saltation length
  • Saltation velocity

ASJC Scopus subject areas

  • General Chemical Engineering

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