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The surface structure and the active layer depth of the irregular sand particles in a continuously avalanching flow

Lookup NU author(s): Dr Vladimir Zivkovic



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


In this paper, flow velocity distributions of irregular glass sand particles in rolling regime were measured using spatial filtering velocimetry technique. The results show that there is a significant difference in free-surface velocity distribution both in streamwise direction and axial direction in comparison with models developed for the spherical particles. The central velocity decreases dramatically due to particle accumulation in the middle of the free-surface. Furthermore, the free-surface does not show S-shaped at high rotation speed, and the deepest region at the midpoint of the flowing layer corresponds to low streamwise velocity in contrast to regular particles systems results.

Publication metadata

Author(s): Qiang ZD, Li R, Chen Q, Zheng G, Zivkovic V, Yang H

Publication type: Article

Publication status: Published

Journal: Powder Technology

Year: 2020

Volume: 360

Pages: 1037-1046

Print publication date: 15/01/2020

Online publication date: 06/11/2019

Acceptance date: 04/11/2019

Date deposited: 05/11/2019

ISSN (print): 0032-5910

ISSN (electronic): 1873-328X

Publisher: Elseiver


DOI: 10.1016/j.powtec.2019.11.010


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