Review of models for predicting the discharge rates of bulk particulates from silos and bins

Ariza-Zafra, K., Berry, Rob and Bradley, Michael S.A. (2008) Review of models for predicting the discharge rates of bulk particulates from silos and bins. In: Proceedings of the International Symposium Reliable Flow of Particulate Solids IV (RELPOWFLO IV) (Tromso, Norway 10-12 June, 2008). Telemark University College, Telemark, pp. 484-492. ISBN 9788272062896

Abstract

Various models for predicting discharge rates have been developed over the last four decades by many research workers (notably Beverloo [1], Johanson [2], Brown [3], Carleton [4], Crewdson [5], Nedderman [6], Gu [7].). In many cases these models offer comparable approaches
to the prediction of discharge rates of bulk particulates from storage equipment when solely gravity
is acting to initiate flow (since they invariably consider the use of mass-flow design equipment).
The models that have been developed consider a wide range of bulk particulates (coarse,incompressible, fine, cohesive) and most contemporary works have incorporated validation against test programmes. Research currently underway at The Wolfson Centre for Bulk Solids Handling Technology,University of Greenwich, has considered the relative performance of these models with respect to a range of bulk properties and with particular focus upon the flexibility of the models to cater for
different geometrical factors for vessels

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