Author
Haim Kalman
Bio: Haim Kalman is an academic researcher from Ben-Gurion University of the Negev. The author has contributed to research in topics: Particle & Archimedes number. The author has an hindex of 32, co-authored 127 publications receiving 2739 citations.
Topics: Particle, Archimedes number, Breakage, Pressure drop, Plug flow
Papers published on a yearly basis
Papers
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Book•
01 Jan 2001
TL;DR: In this article, the authors discuss the fundamental principles of particulate flow, including storage and mechanical conveyers, and the application of measurement techniques in the context of particle filtering and capsule conveying.
Abstract: Chapter headings. Characterization. Storage and mechanical conveyers. Fundamental of particulate flow. Pneumatic conveying. Slurry & capsule conveying. Fluidization and drying. Segregation and mixing. Size reduction and enlargement. Environmental aspects and classification. Application of measurement techniques.
104 citations
TL;DR: In this paper, the authors present experimental results on pickup velocity (critical velocity) measurements for a variety of particulate solids and define three zones by establishing simple relationships between the Reynolds and Archimedes numbers.
104 citations
TL;DR: In this article, the authors considered increasing the heat dissipation of annular fin at a denned magnitude of mass, and four different cross-section shapes were examined, including constant thickness, constant area for heat flow, triangular and parabolic fin shapes.
92 citations
TL;DR: In this paper, a number of approaches to define particle strength were considered, and strength in terms of crushing force was chosen, and particle strength was compared and found to be size independent.
88 citations
TL;DR: In this paper, a 3D numerical model was developed to accurately predict the jet-mill's behavior, and a discrete element model was used to predict particle motion while subjected to fluid forces calculated by computational fluid dynamics (CFD).
84 citations
Cited by
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TL;DR: This paper reviews the work in this area with special reference to the discrete element method and associated theoretical developments, and covers three important aspects: models for the calculation of the particle–particle and particle–fluid interaction forces, coupling of discrete elements method with computational fluid dynamics to describe particle-fluid flow, and the theories for linking discrete to continuum modelling.
1,563 citations
TL;DR: Zhu et al. as discussed by the authors provided a summary of the studies based on discrete particle simulation in the past two decades or so, with emphasis on the microdynamics including packing/flow structure and particle-particle, particle-fluid and particle wall interaction forces.
1,253 citations
Book•
20 May 2005
TL;DR: In this paper, Brownian Dynamics for the Simulation of Granular Flows is used to simulate the simulation of granular flows in a dynamical model with event-driven molecular dynamics.
Abstract: Molecular Dynamics.- Event-Driven Molecular Dynamics.- Direct Simulation Monte Carlo.- Rigid-Body Dynamics.- Cellular Automata.- Bottom-to-Top Reconstruction.- Brownian Dynamics for the Simulation of Granular Flows.
617 citations
TL;DR: In this article, the authors present a body of knowledge that forms the beginnings of an expandable continuum framework for the description of mixing and segregation of granular materials, focusing primarily on noncohesive particles, possibly differing in size, density, shape, etc.
Abstract: ▪ Abstract Granular materials segregate. Small differences in either size or density lead to flow-induced segregation, a complex phenomenon without parallel in fluids. Modeling of mixing and segregation processes requires the confluence of several tools, including continuum and discrete descriptions (particle dynamics, Monte Carlo simulations, cellular automata computations) and, often, considerable geometrical insight. None of these viewpoints, however, is wholly satisfactory by itself. Moreover, continuum and discrete descriptions of granular flows are regime dependent, and this fact may require adopting different subviewpoints. This review organizes a body of knowledge that forms—albeit imperfectly—the beginnings of an expandable continuum framework for the description of mixing and segregation of granular materials. We focus primarily on noncohesive particles, possibly differing in size, density, shape, etc. We present segregation mechanisms and models for size and density segregation and introduce ch...
599 citations
Book•
01 Jan 2002
TL;DR: Bursik et al. as mentioned in this paper presented a conceptual framework for investigating how ignimbrites are deposited, integrating the results of field-based studies, laboratory experiments and numerical modelling, including work on clastic sedimentologym and industrial particle transport.
Abstract: Pyoclastic density currents are awesome volcanic phenomena that can wreak destruction on a regional scale and can impact global climate. They deposit ignimbrites, which include vast impact lansdscape-modifying sheets with volumes exceeding 1000 km3.This book takes stock of our understanding of pyroclastic density currents and presents a new conceptual framework for investigating how ignimbrites are deposited. It integrates the results of field-based studies, laboratory experiments and numerical modelling, including work on clastic sedimentologym and industrial particle transport. Topics covered include the behaviour or particulate currents, mechanisms of clast support and segregation, interpreting ignimbrite lithofacies and architectures, and future research directions. The new approach focuses on processes and conditions within the lower flow-boundary zone of currents. Superb diagrams explain many new concepts, while the 95 photographs make an explanatiry atlas of deposit types. This is essential reading for workers investigating volcanic hazards, and for anyone wishing to interpret modern or ancient ignimbrites, as well as other catastrophically emplaced sediments.
“Given the depth of scholarship that they have brought to the subject, the power of their arguments, and the degree of synthesis with other fields, this would seemto qualify as a seminal work… I think that this will be the paper on the topic that others will have to contend with for many years to come.” Marcus Bursik, State University of New York
592 citations