Parametric study and design procedure for planar silos and hoppers

Evgeny Rabinovich, Haim Kalman, Per F. Peterson

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


This paper presents a parametric study and a new design procedure for wedge-shaped (planar) silos. The analytical part of the study is based on a previously reported theoretical model and considers the influence of granular material properties, material height, bin and hopper geometrical dimensions, and the possible difference between the bin and hopper wall friction coefficients. This study includes new experimental results and analyses regarding the influence of various parameters. It was found that the mass–funnel flow boundaries were almost indifferent to the bin sidewall roughness. In addition, according to the new results, the mass flow mode could be achieved even for very rough hopper walls, but in that case, a stagnant layer of material exists next to the hopper walls. Finally, a new design procedure for planar silos was proposed. The new procedure should help operators and designers of silos to increase the accuracy and flexibility in the assessment of granular flow regime, and therefore it might significantly improve the process efficiency.

Original languageEnglish
Pages (from-to)333-342
Number of pages10
JournalPowder Technology
StatePublished - 1 Aug 2021


  • Design procedure
  • Funnel and mass flow
  • Granular dynamics
  • Parametric study
  • Planar silos and hoppers

ASJC Scopus subject areas

  • General Chemical Engineering


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