Effect Of Particle Shape On Hopper Discharge Rate
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Effect of Particle Shape on Hopper Discharge Rate
ABSTRACT: The discharge rates for granular materials of various shapes and sizes from a rectangular flat-bottomed hopper with a rectangular orifice at the base were measured and compared to those predicted by the correlations in the literature. The predicted discharge rates by modified Beverloo's correlation and Fowler and Glastonbury's correlation differed from the measured values for most spherical materials by less than 10%. Harmens's correlation predicted discharge rates in good agreement with the measured values for spherical materials larger than 1000 ... Modified Beverloo's correlation predicted discharge rates deviating by a maximum of 10% from the measured rates for non-spherical materials with an aspect ratio around unity and/or high roundness. However, the correlation significantly overestimated the actual discharge rates for materials with a high aspect ratio and/or low roundness and/or angular surface. Harmens's correlation also failed to accurately predict discharge rates for such materials, though it gave better predictions when compared to modified Beverloo's correlation.
Computational Mechanics of Arbitrarily Shaped Granular Materials
This book focuses on discrete element methods for arbitrarily shaped granular materials, including super-quadric models, spherical harmonic functions and level set methods, and numerical analysis of the flow characteristics of non-spherical granular materials. This book is used as a reference book for scientific researchers engaged in dynamic analysis of granular materials and optimal design of equipment structures in the fields of engineering mechanics, applied physics, mechanical engineering, and chemical engineering, as well as for graduate students or senior undergraduates of related majors in institutions of higher education.
Proceedings of the 7th International Conference on Discrete Element Methods
This book presents the latest advances in Discrete Element Methods (DEM) and technology. It is the proceeding of 7th International Conference on DEM which was held at Dalian University of Technology on August 1 - 4, 2016. The subject of this book are the DEM and related computational techniques such as DDA, FEM/DEM, molecular dynamics, SPH, Meshless methods, etc., which are the main computational methods for modeling discontinua. In comparison to continua which have been already studied for a long time, the research of discontinua is relatively new, but increases dramatically in recent years and has already become an important field. This book will benefit researchers and scientists from the academic fields of physics, engineering and applied mathematics, as well as from industry and national laboratories who are interested in the DEM.