Arching phenomena in a vibrated granular bed

S. S. Hsiau, M. H. Wu, C. H. Chen

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The motions of granular materials in a vertical shaker are complicated. According to the levels of the amplitude of the vibration acceleration, the particle motion phenomena may include the following convective types: heaping; fluidization; segregation; surface wave; and arching. This paper studied the arching phenomena of granular materials in a vertical shaker. The arching motions were investigated by high speed photography and image processing technology. The velocity fields of the granular materials during vibration were calculated from the recorded images. The ensemble average velocities in the horizontal and vertical directions were close to 0. The velocity fluctuations were also measured. The ensemble average granular temperature increases with the amplitude of the vibration acceleration, however, the variation of granular temperature with the acceleration in the horizontal direction is not as significant due to the existing side walls.

Original languageEnglish
Pages (from-to)185-193
Number of pages9
JournalPowder Technology
Volume99
Issue number2
DOIs
StatePublished - 15 Sep 1998

Keywords

  • Arching
  • Convection
  • Granular material
  • Granular temperature
  • Vibrated bed

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