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Author : Jin Li
Publisher :
ISBN 13 : 9781864996494
Total Pages : 183 pages
Book Rating : 4.9/5 (964 download)
Download or read book Simulations of Dynamic Behaviour of Packed Particulate Systems written by Jin Li and published by . This book was released on 2002 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tarek I. Zohdi
Publisher : Springer Science & Business Media
ISBN 13 : 3642285198
Total Pages : 124 pages
Book Rating : 4.6/5 (422 download)
Download or read book Dynamics of Charged Particulate Systems written by Tarek I. Zohdi and published by Springer Science & Business Media. This book was released on 2012-04-05 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this monograph is to provide a concise introduction to the dynamics of systems comprised of charged small-scale particles. Flowing, small-scale, particles ("particulates'') are ubiquitous in industrial processes and in the natural sciences. Applications include electrostatic copiers, inkjet printers, powder coating machines, etc., and a variety of manufacturing processes. Due to their small-scale size, external electromagnetic fields can be utilized to manipulate and control charged particulates in industrial processes in order to achieve results that are not possible by purely mechanical means alone. A unique feature of small-scale particulate flows is that they exhibit a strong sensitivity to interparticle near-field forces, leading to nonstandard particulate dynamics, agglomeration and cluster formation, which can strongly affect manufactured product quality. This monograph also provides an introduction to the mathematically-related topic of the dynamics of swarms of interacting objects, which has gained the attention of a number of scientific communities. In summary, the following topics are discussed in detail: (1) Dynamics of an individual charged particle, (2) Dynamics of rigid clusters of charged particles, (3) Dynamics of flowing charged particles, (4) Dynamics of charged particle impact with electrified surfaces and (5) An introduction to the mechanistic modeling of swarms. The text can be viewed as a research monograph suitable for use in an upper division undergraduate or first year graduate course geared towards students in the applied sciences, mechanics and mathematics that have an interest in the analysis of particulate materials.
Author : Lindsay D. Norman
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.F/5 ( download)
Download or read book Computer Simulation of Particulate Systems written by Lindsay D. Norman and published by . This book was released on 1971 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Aibing Yu
Publisher : Springer
ISBN 13 : 9789812874498
Total Pages : 500 pages
Book Rating : 4.8/5 (744 download)
Download or read book Simulation and Modeling of Particulate System written by Aibing Yu and published by Springer. This book was released on 2025-06-15 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this handbook is to provide a comprehensive summary of the field of Particle Science and Technology which includes most updated research findings and their applications in different industries. It is hoped that the consolidated knowledge described by this handbook will inspire more innovative ideas to bring the field forward. The size of the particles may range from nanometer scale, as in pigments or aerosols, to that of mined or quarried materials. The handbook will cover the topics ranging from the formation and synthesis, packing and flow and application of these particles. Each part is explored in great details in different sections and chapters, it is written by a pool of international well known scholars, as well as industrial experts. The handbook fully reflects the state of the art in Particle Science and Technology.
Author : E. Guazzelli
Publisher : Springer Science & Business Media
ISBN 13 : 9401585180
Total Pages : 407 pages
Book Rating : 4.4/5 (15 download)
Download or read book Mobile Particulate Systems written by E. Guazzelli and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mobile particulate systems involve the mechanics, flow and transport properties of mixtures of fluids and solids. These systems are intrinsic to the rheology of emulsions and suspensions, flocculation and aggregation, sedimentation and fluidization, flow of granular media, nucleation and growth of small particles, segregation, attrition and solidification processes. Its diversity means that the area has been studied by a number of different disciplines (e.g. chemical or civil engineering, mechanics, hydrodynamics, geophysics, condensed matter and statistical physics, etc.). Mobile Particulate Systems features general, orientational lectures and advanced topics, covering state of the art approaches to the study of suspensions, fluidized beds, sedimentation and granular flows.
Author : Tao Jia
Publisher :
ISBN 13 :
Total Pages : 101 pages
Book Rating : 4.:/5 (872 download)
Download or read book Dynamic Simulation of Particulate and Molecular Systems written by Tao Jia and published by . This book was released on 2011 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Granular packing of millimeter-scale and micrometer-scale particles with three different size distributions (monosize, bimodal and Gaussian) are studied using the Distinct Element Method (DEM). The dissipative forces including viscoelastic and frictional contact forces between the colliding particles cause the energy loss during the packing process, and finally the particles agglomerations is formed. When the particle diameter is less than 100 micrometers, the van der Waals force needed to be incorporated into simulation. To qualitatively measure the final granular structure, coordination number, porosity, radial distribution function and force distribution are calculated. As to millimeter-scale particles packing structures, the contact force distribution is studied. As to micrometer-scale particles packing structures, both contact force and van der Waals force distributions are studied. Molecular dynamics simulation of nanofluid system composed of argon liquid and copper nanoparticle is carried out. To ensure the interatomic force gradually decreases to zero at the cut-off distance, Stoddard and Ford potential function is employed. Green-Kubo method is used to obtain the thermal conductivity. The characteristics of the heat current are measured by its mean value, variance, third moment, and Shannon entropy. Autocorrelation and partial autocorrelation functions of the heat current are used to investigate the correlation between the discrete heat current values with different lags.
Author : Chuan-Yu Wu
Publisher : Royal Society of Chemistry
ISBN 13 : 1849735034
Total Pages : 294 pages
Book Rating : 4.8/5 (497 download)
Download or read book Discrete Element Modelling of Particulate Media written by Chuan-Yu Wu and published by Royal Society of Chemistry. This book was released on 2012-08-01 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discrete Element Methods (DEM) is a numerical technique for analysing the mechanics and physics of particulate systems. Originated in the late seventies for analysing geotechnical problems, it has seen significant development and is now employed extensively across disciplines. Produced in celebration of the 70th Birthday of Colin Thornton, this book contains a selection of papers concerning advances in discrete element modelling which were presented at the International Symposium on Discrete Element Modelling of Particulate Media held at Birmingham, UK on 28-30th March, 2012. The book showcases the wide application of discrete element modelling in gas-solid fluidisation, particulate flows, liquid-solid systems and quasi-static behaviour. It also reports the recent advancement in coupled DEM with computational fluid dynamics, Lattice Boltzmann Methods for multiphase systems and the novel application of DEM in contact electrification and fracture of granular systems. Aimed at research communities dealing with this technique in the powder handling and formulation industries, this will be a welcomed addition to the literature in this area.
Author : Xiaoliang Deng
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (954 download)
Download or read book Understanding Bulk Behavior of Particulate Materials from Particle Scale Simulations written by Xiaoliang Deng and published by . This book was released on 2016 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particulate materials play an increasingly significant role in various industries, such as pharmaceutical manufacturing, food, mining, and civil engineering. The objective of this research is to better understand bulk behaviors of particulate materials from particle scale simulations. Packing properties of assembly of particles are investigated first, focusing on the effects of particle size, surface energy, and aspect ratio on the coordination number, porosity, and packing structures. The simulation results show that particle sizes, surface energy, and aspect ratio all influence the porosity of packing to various degrees. The heterogeneous force networks within particle assembly under external compressive loading are investigated as well. The results show that coarse-coarse contacts dominate the strong network and coarse-fine contacts dominate the total network. Next, DEM models are developed to simulate the particle dynamics inside a conical screen mill (comil) and magnetically assisted impaction mixer (MAIM), both are important particle processing devices. For comil, the mean residence time (MRT), spatial distribution of particles, along with the collision dynamics between particles as well as particle and vessel geometries are examined as a function of the various operating parameters such as impeller speed, screen hole size, open area, and feed rate. The simulation results can help better understand dry coating experimental results using comil. For MAIM system, the magnetic force is incorporated into the contact model, allowing to describe the interactions between magnets. The simulation results reveal the connections between homogeneity of mixture and particle scale variables such as size of magnets and surface energy of non-magnets. In particular, at the fixed mass ratio of magnets to non-magnets and surface energy the smaller magnets lead to better homogeneity of mixing, which is in good agreement with previously published experimental results. Last but not least, numerical simulations, along with theoretical analysis, are performed to investigate the interparticle force of dry coated particles. A model is derived and can be used to predict the probabilities of hose-host (HH), host-guest (HG), and guest-guest (GG) contacts. The results indicate that there are three different regions dominated by HH, HG, and GG contacts, respectively. Moreover, the critical SAC for the transition of HG to GG contacts is lower than previously estimated value. In summary, particle packing, particle dynamics associated with various particle processing devices, and interparticle force of dry coated particles are investigated in this thesis. The results show that particle scale information such as coordination number, collision dynamics, and contact force between particles from simulation results can help better understand bulk properties of assembly of individual particles.
Author : Jonathan P.K. Seville
Publisher : Butterworth-Heinemann
ISBN 13 : 0080983448
Total Pages : 296 pages
Book Rating : 4.0/5 (89 download)
Download or read book Particle Technology and Engineering written by Jonathan P.K. Seville and published by Butterworth-Heinemann. This book was released on 2016-05-20 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Particle Technology and Engineering presents the basic knowledge and fundamental concepts that are needed by engineers dealing with particles and powders. The book provides a comprehensive reference and introduction to the topic, ranging from single particle characterization to bulk powder properties, from particle-particle interaction to particle-fluid interaction, from fundamental mechanics to advanced computational mechanics for particle and powder systems. The content focuses on fundamental concepts, mechanistic analysis and computational approaches. The first six chapters present basic information on properties of single particles and powder systems and their characterisation (covering the fundamental characteristics of bulk solids (powders) and building an understanding of density, surface area, porosity, and flow), as well as particle-fluid interactions, gas-solid and liquid-solid systems, with applications in fluidization and pneumatic conveying. The last four chapters have an emphasis on the mechanics of particle and powder systems, including the mechanical behaviour of powder systems during storage and flow, contact mechanics of particles, discrete element methods for modelling particle systems, and finite element methods for analysing powder systems. This thorough guide is beneficial to undergraduates in chemical and other types of engineering, to chemical and process engineers in industry, and early stage researchers. It also provides a reference to experienced researchers on mathematical and mechanistic analysis of particulate systems, and on advanced computational methods. - Provides a simple introduction to core topics in particle technology: characterisation of particles and powders: interaction between particles, gases and liquids; and some useful examples of gas-solid and liquid-solid systems - Introduces the principles and applications of two useful computational approaches: discrete element modelling and finite element modelling - Enables engineers to build their knowledge and skills and to enhance their mechanistic understanding of particulate systems
Author : Colin Thornton
Publisher : Springer
ISBN 13 : 3319187112
Total Pages : 202 pages
Book Rating : 4.3/5 (191 download)
Download or read book Granular Dynamics, Contact Mechanics and Particle System Simulations written by Colin Thornton and published by Springer. This book was released on 2015-09-03 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the Discrete Element Method (DEM) technique, a discontinuum modelling approach that takes into account the fact that granular materials are composed of discrete particles which interact with each other at the microscale level. This numerical simulation technique can be used both for dispersed systems in which the particle-particle interactions are collisional and compact systems of particles with multiple enduring contacts. The book provides an extensive and detailed explanation of the theoretical background of DEM. Contact mechanics theories for elastic, elastic-plastic, adhesive elastic and adhesive elastic-plastic particle-particle interactions are presented. Other contact force models are also discussed, including corrections to some of these models as described in the literature, and important areas of further research are identified. A key issue in DEM simulations is whether or not a code can reliably simulate the simplest of systems, namely the single particle oblique impact with a wall. This is discussed using the output obtained from the contact force models described earlier, which are compared for elastic and inelastic collisions. In addition, further insight is provided for the impact of adhesive particles. The author then moves on to provide the results of selected DEM applications to agglomerate impacts, fluidised beds and quasi-static deformation, demonstrating that the DEM technique can be used (i) to mimic experiments, (ii) explore parameter sweeps, including limiting values, or (iii) identify new, previously unknown, phenomena at the microscale. In the DEM applications the emphasis is on discovering new information that enhances our rational understanding of particle systems, which may be more significant than developing a new continuum model that encompasses all microstructural aspects, which would most likely prove too complicated for practical implementation. The book will be of interest to academic and industrial researchers working in particle technology/process engineering and geomechanics, both experimentalists and theoreticians.
Author : José Teixeira Freire
Publisher : Bentham Science Publishers
ISBN 13 : 1608052273
Total Pages : 231 pages
Book Rating : 4.6/5 (8 download)
Download or read book Transport Phenomena In Particulate Systems written by José Teixeira Freire and published by Bentham Science Publishers. This book was released on 2012-03-31 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: This e-book presents recent advances in research in the field of particulate systems. A comprehensive background on operations involving particulate materials with a didactic approach is illustrated. Fundamentals and applications in a variety of multi-phase flow reactors are explained with a clear focus on the analysis of transport phenomena, experimental techniques and modeling. The volume spans 10 chapters covering different aspects of transport phenomena including fixed and fluidized systems, spouted beds, electrochemical and wastewater treatment reactors. This e-book will be valuable for students, engineers and researchers aiming to keep updated on the latest developments on particulate systems.
Author : Claudia V. Genovese
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.:/5 (797 download)
Download or read book Mechanical Behavior of Particulate Systems written by Claudia V. Genovese and published by . This book was released on 2003 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : T. I. Zohdi
Publisher : SIAM
ISBN 13 : 9780898718928
Total Pages : 194 pages
Book Rating : 4.7/5 (189 download)
Download or read book An Introduction to Modeling and Simulation of Particulate Flows written by T. I. Zohdi and published by SIAM. This book was released on 2007-01-01 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relatively recent increase in computational power available for mathematical modeling and simulation raises the possibility that modern numerical methods can play a significant role in the analysis of complex particulate flows. An Introduction to Modeling and Simulation of Particulate Flows focuses on basic models and physically based computational solution strategies for the direct and rapid simulation of flowing particulate media. Its emphasis is primarily on fluidized dry particulate flows in which there is no significant interstitial fluid, although fully coupled fluid-particle systems are discussed as well. An introduction to basic computational methods for ascertaining optical responses of particulate systems also is included. The successful analysis of a wide range of applications requires the simulation of flowing particulate media that simultaneously involves near-field interaction and contact between particles in a thermally sensitive environment. These systems naturally occur in astrophysics and geophysics; powder processing pharmaceutical industries; bio-, micro- and nanotechnologies; and applications arising from the study of spray processes involving aerosols, sputtering, and epitaxy. Audience: written for computational scientists, numerical analysts, and applied mathematicians, it will be of interest to civil and mechanical engineers and materials scientists. It is also suitable for first-year graduate students in the applied sciences, engineering, and applied mathematics who have an interest in the computational analysis of complex particulate flows.
Author : Hamid Reza Norouzi
Publisher : John Wiley & Sons
ISBN 13 : 1119005256
Total Pages : 432 pages
Book Rating : 4.1/5 (19 download)
Download or read book Coupled CFD-DEM Modeling written by Hamid Reza Norouzi and published by John Wiley & Sons. This book was released on 2016-09-14 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the CFD-DEM method of modeling which combines both the Discrete Element Method and Computational Fluid Dynamics to simulate fluid-particle interactions. Deals with both theoretical and practical concepts of CFD-DEM, its numerical implementation accompanied by a hands-on numerical code in FORTRAN Gives examples of industrial applications
Author : Noriaki Wakao
Publisher : Taylor & Francis
ISBN 13 : 9780677058603
Total Pages : 396 pages
Book Rating : 4.0/5 (586 download)
Download or read book Heat and Mass Transfer in Packed Beds written by Noriaki Wakao and published by Taylor & Francis. This book was released on 1982 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1982. Routledge is an imprint of Taylor & Francis, an informa company.
Author : Wojciech Mitkowski
Publisher : Springer Science & Business Media
ISBN 13 : 3540922024
Total Pages : 195 pages
Book Rating : 4.5/5 (49 download)
Download or read book Modelling Dynamics in Processes and Systems written by Wojciech Mitkowski and published by Springer Science & Business Media. This book was released on 2009-06-01 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamics is what characterizes virtually all phenomenae we face in the real world, and processes that proceed in practically all kinds of inanimate and animate systems, notably social systems. For our purposes dynamics is viewed as time evolution of some characteristic features of the phenomenae or processes under consideration. It is obvious that in virtually all non-trivial problems dynamics can not be neglected, and should be taken into account in the analyses to, first, get insight into the problem consider, and second, to be able to obtain meaningful results. A convenient tool to deal with dynamics and its related evolution over time is to use the concept of a dynamic system which, for the purposes of this volume can be characterized by the input (control), state and output spaces, and a state transition equation. Then, starting from an initial state, we can find a sequence of consecutive states (outputs) under consecutive inputs (controls). That is, we obtain a trajectory. The state transition equation may be given in various forms, exemplified by differential and difference equations, linear or nonlinear, deterministic or stochastic, or even fuzzy (imprecisely specified), fully or partially known, etc. These features can give rise to various problems the analysts may encounter like numerical difficulties, instability, strange forms of behavior (e.g. chaotic), etc. This volume is concerned with some modern tools and techniques which can be useful for the modeling of dynamics. We focus our attention on two important areas which play a key role nowadays, namely automation and robotics, and biological systems. We also add some new applications which can greatly benefit from the availability of effective and efficient tools for modeling dynamics, exemplified by some applications in security systems.
Author : Aibing Yu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (768 download)
Download or read book Modelling and Simulation of Particulate Systems written by Aibing Yu and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
