Particulate Flows

Author : Donald A. Drew,Daniel D. Joseph,Stephen L. Passman
Publisher : Springer Science & Business Media
Page : 155 pages
File Size : 49,5 Mb
Release : 2012-12-06
Category : Mathematics
ISBN : 9781468471090

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Particulate Flows by Donald A. Drew,Daniel D. Joseph,Stephen L. Passman Pdf

This IMA Volume in Mathematics and its Applications PARTICULATE FLOWS: PROCESSING AND RHEOLOGY is based on the proceedings of a very successful one-week workshop with the same title, which was an integral part of the 1995-1996 IMA program on "Mathematical Methods in Materials Science." We would like to thank Donald A. Drew, Daniel D. Joseph, and Stephen L. Passman for their excellent work as organizers of the meeting. We also take this opportunity to thank the National Science Foun dation (NSF), the Army Research Office (ARO) and the Office of Naval Research (ONR), whose financial support made the workshop possible. A vner Friedman Robert Gulliver v PREFACE The workshop on Particulate Flows: Processing and Rheology was held January 8-12, 1996 at the Institute for Mathematics and its Applications on the University of Minnesota Twin Cities campus as part of the 1995- 96 Program on Mathematical Methods in Materials Science. There were about forty participants, and some lively discussions, in spite of the fact that bad weather on the east coast kept some participants from attending, and caused scheduling changes throughout the workshop. Heterogeneous materials can behave strangely, even in simple flow sit uations. For example, a mixture of solid particles in a liquid can exhibit behavior that seems solid-like or fluid-like, and attempting to measure the "viscosity" of such a mixture leads to contradictions and "unrepeatable" experiments. Even so, such materials are commonly used in manufacturing and processing.

Author : T. I. Zohdi
Publisher : SIAM
Page : 194 pages
File Size : 49,8 Mb
Release : 2007-01-01
Category : Science
ISBN : 0898718929

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An Introduction to Modeling and Simulation of Particulate Flows by T. I. Zohdi Pdf

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 : Wioletta Podgórska
Publisher : CRC Press
Page : 384 pages
File Size : 41,5 Mb
Release : 2019-09-17
Category : Science
ISBN : 9781351644655

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Multiphase Particulate Systems in Turbulent Flows by Wioletta Podgórska Pdf

Multiphase Particulate Systems in Turbulent Flows: Fluid-Liquid and Solid-Liquid Dispersions provides methods necessary to analyze complex particulate systems and related phenomena including physical, chemical and mathematical description of fundamental processes influencing crystal size and shape, suspension rheology, interfacial area of drops and bubbles in extractors and bubble columns. Examples of mathematical model formulation for different processes taking place in such systems is shown. Discussing connections between turbulent mixing mechanisms and precipitation, it discusses influence of fine-scale structure of turbulence, including its intermittent character, on breakage of drops, bubbles, cells, plant cell aggregates. An important aspect of the mathematical modeling presented in the book is multi-fractal, taking into account the influence of internal intermittency on different phenomena. Key Features Provides detailed descriptions of dispersion processes in turbulent flow, interactions between dispersed entities, and continuous phase in a single volume Includes simulation models and validation experiments for liquid-liquid, gas-liquid, and solid-liquid dispersions in turbulent flows Helps reader learn formulation of mathematical models of breakage or aggregation processes using multifractal theory Explains how to solve different forms of population balance equations Presents a combination of theoretical and engineering approaches to particulate systems along with discussion of related diversity, with exercises and case studies

Author : Wioletta Podgorska
Publisher : CRC Press
Page : 482 pages
File Size : 47,9 Mb
Release : 2019-09
Category : Science
ISBN : 1315118386

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Multiphase Particulate Systems in Turbulent Flows by Wioletta Podgorska Pdf

"The book will provide methods necessary to analyze complex particulate systems and related phenomena. Physical, chemical and mathematical description of fundamental processes influencing crystal size and shape, suspension reology, interfacial area of drops and bubbles in extractors and bubble columns will be provided. Examples of mathematical model formulation for different processes taking place in such systems will be shown. Connections between turbulent mixing mechanism and precipitation will be discussed. The influence of fine-scale structure of turbulence, including its intermittent character, on breakage of drops, bubbles, cells, plant cell aggregates will be considered. Important aspect of the mathematical modeling presented in the book is multifractal approach applied to take into account the influence of internal intermittency on different phenomena"--

Author : Efstathios E (Stathis) Michaelides
Publisher : Springer Science & Business Media
Page : 177 pages
File Size : 50,7 Mb
Release : 2013-01-04
Category : Technology & Engineering
ISBN : 9781461458548

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Heat and Mass Transfer in Particulate Suspensions by Efstathios E (Stathis) Michaelides Pdf

Heat and Mass Transfer in Particulate Suspensions is a critical review of the subject of heat and mass transfer related to particulate Suspensions, which include both fluid-particles and fluid-droplet Suspensions. Fundamentals, recent advances and industrial applications are examined. The subject of particulate heat and mass transfer is currently driven by two significant applications: energy transformations –primarily combustion – and heat transfer equipment. The first includes particle and droplet combustion processes in engineering Suspensions as diverse as the Fluidized Bed Reactors (FBR’s) and Internal Combustion Engines (ICE’s). On the heat transfer side, cooling with nanofluids, which include nanoparticles, has attracted a great deal of attention in the last decade both from the fundamental and the applied side and has produced several scientific publications. A monograph that combines the fundamentals of heat transfer with particulates as well as the modern applications of the subject would be welcomed by both academia and industry.

Author : W. D. McCaffrey,B. C. Kneller,J. Peakall
Publisher : John Wiley & Sons
Page : 320 pages
File Size : 52,5 Mb
Release : 2009-03-05
Category : Science
ISBN : 9781444304282

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Particulate Gravity Currents by W. D. McCaffrey,B. C. Kneller,J. Peakall Pdf

This volume arises from the conference Sediment Transport andDeposition by Particulate Gravity Currents held in the UK in 1998.The field of particulate gravity currents ranges from turbiditycurrents in the oceans, lakes and reservoirs to pyroclastic densitycurrents and avalanches, debris flows and lahars, grainflows,powder snow avalanches, effluent dispersal and ancient gravitycurrent deposits. Although the sub-division of particulate gravity currents intodiscrete sub-categories (such as grain flows, turbidity currents ordebris flows) provides a convenient descriptive shorthand, itundermines the sense of process continuum needed to describe manynatural flows. The structure of this volume reflects an integrativeaim, with papers grouped by research approach. The first section ofthe book contains six papers on theoretical and numerical modellingof a range of flow types. The following four papers are focusedupon combined theoretical and experimental modelling approaches.The next section contains four papers describing experimentalmodelling and the final section includes five papers detailingfield-based studies. The volume stands as a testament to the broad range of researchcarried out on particulate gravity currents, and hints at theenhanced rate of progress that is likely to be achieved throughfurther integrated studies. If you are a member of the International Association ofSedimentologists, for purchasing details, please see:http://www.iasnet.org/publications/details.asp?code=SP31

Author : Tomáš Bodnár,Giovanni P. Galdi,Šárka Nečasová
Publisher : Birkhäuser
Page : 519 pages
File Size : 43,7 Mb
Release : 2017-09-30
Category : Mathematics
ISBN : 9783319602820

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Particles in Flows by Tomáš Bodnár,Giovanni P. Galdi,Šárka Nečasová Pdf

This book aims to face particles in flows from many different, but essentially interconnected sides and points of view. Thus the selection of authors and topics represented in the chapters, ranges from deep mathematical analysis of the associated models, through the techniques of their numerical solution, towards real applications and physical implications. The scope and structure of the book as well as the selection of authors was motivated by the very successful summer course and workshop "Particles in Flows'' that was held in Prague in the August of 2014. This meeting revealed the need for a book dealing with this specific and challenging multidisciplinary subject, i.e. particles in industrial, environmental and biomedical flows and the combination of fluid mechanics, solid body mechanics with various aspects of specific applications.

Author : T.I. Zohdi
Publisher : SIAM
Page : 187 pages
File Size : 48,7 Mb
Release : 2007-07-19
Category : Science
ISBN : 9780898716276

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An Introduction to Modeling and Simulation of Particulate Flows by T.I. Zohdi Pdf

Describes basic models and physically-based computational solution strategies for simulating flowing particulate media.

Author : A. Levy,Christopher J Kalman
Publisher : Elsevier
Page : 871 pages
File Size : 46,8 Mb
Release : 2001-10-22
Category : Technology & Engineering
ISBN : 9780080533285

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Handbook of Conveying and Handling of Particulate Solids by A. Levy,Christopher J Kalman Pdf

This handbook presents comprehensive coverage of the technology for conveying and handling particulate solids. Each chapter covers a different topic and contains both fundamentals and applications. Usually, each chapter, or a topic within a chapter, starts with one of the review papers. Chapter 1 covers the characterization of the particulate materials. Chapter 2 covers the behaviour of particulate materials during storage, and presents recent developments in storage and feeders design and performance. Chapter 3 presents fundamental studies of particulate flow, while Chapters 4 and 5 present transport solutions, and the pitfalls of pneumatic, slurry, and capsule conveying. Chapters 6, 7 and 8 cover both the fundamentals and development of processes for particulate solids, starting from fluidisation and drying, segregation and mixing, and size-reduction and enlargement. Chapter 9 presents environmental aspects and the classification of the particulate materials after they have been handled by one of the above-mentioned processes. Finally, Chapter 10 covers applications and developments of measurement techniques that are the heart of the analysis of any conveying or handling system.

Author : Daniele L. Marchisio,Rodney O. Fox
Publisher : Cambridge University Press
Page : 547 pages
File Size : 54,7 Mb
Release : 2013-03-28
Category : Computers
ISBN : 9780521858489

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Computational Models for Polydisperse Particulate and Multiphase Systems by Daniele L. Marchisio,Rodney O. Fox Pdf

All-inclusive introduction to polydisperse multiphase flows linking theory to practice through numerous real-world examples and MATLAB® scripts for key algorithms.

Author : Anonim
Publisher : Unknown
Page : 506 pages
File Size : 46,5 Mb
Release : 1989
Category : Aeronautics
ISBN : NYPL:33433060145780

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : Robert Kasper
Publisher : Cuvillier Verlag
Page : 178 pages
File Size : 52,9 Mb
Release : 2021-04-30
Category : Technology & Engineering
ISBN : 9783736964198

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Numerical modeling and simulation of particulate fouling on structured heat transfer surfaces using multiphase Eulerian-Lagrangian LES by Robert Kasper Pdf

Durch die gezielte Strukturierung von wärmeübertragenden Oberflächen, wie beispielsweise durch Dellen oder Rippen, kann die örtliche Turbulenz und damit die thermische Durchmischung gesteigert werden. Dies kann die Effizienz von Wärmeübertragern oder Bauteilkühlsystemen erheblich erhöhen. Derartige Oberflächenstrukturrierungen begünstigen jedoch das Partikelfouling, daher die Ablagerung suspendierter Partikel, wie z.B. Sand, Schlamm oder Korrosionsprodukte. Gegenstand dieser Arbeit ist die Entwicklung eines universellen, numerischen CFD-Verfahrens zur Vorhersage des partikulären Foulings auf strukturierten Oberflächen, speziell Dellenoberflächen. Das entwickelte Verfahren basiert auf einer Kombination des Lagrangian-Particle-Trackings zur Beschreibung der dispersen Phase (Foulingpartikel), sowie räumlich und zeitlich aufgelöster Large-Eddy Simulation für die Berechnung der kontinuierlichen Phasen (Trägerfluid). Dieses Vorgehen ermöglicht nicht nur die Auswertung der infolge der Partikelablagerungen verminderten thermo-hydraulischen Effizienz, sondern auch die Untersuchung der Wechselwirkungen zwischen turbulenten Strömungsstrukturen und dem partikulärem Fouling. Dadurch kann gezeigt werden, dass die Verwendung von sphärischen Dellen als Oberflächenstrukturen nicht nur aus thermo-hydraulischer Sicht die optimale Wahl darstellt, sondern auch eine substantielle Verminderung des Partikelfoulings begünstigt. The application of structured heat transfer surfaces, such as dimples or ribs, increase the local turbulence and thus thermal mixing. This can improve the efficiency of heat exchangers or cooling systems significantly. However, structured surfaces are known to promote particulate fouling, hence the unwanted accumulation and deposition of suspended particles (e.g., silt, sludge or iron oxide). The scope of this work is the development of a universal numerical CFD method for the prediction of particulate fouling, especially on dimpled surfaces. The proposed approach is based on a combination of the Lagrangian point-particle tracking for the description of the disperse phase (fouling particles), and spatially and temporally resolved large-eddy simulations for the calculation of the continuous phase (carrier fluid). This approach allows not only the evaluation of the reduced thermo-hydraulic efficiency due to particle deposition, but also the investigation of the interaction between turbulent flow structures and the particulate fouling. It can be shown that the usage of spherical dimples as surface structures is not only the optimal choice from a thermo-hydraulic point of view, but also favors a substantial reduction of particulate fouling.

Author : E. Guazzelli,Luc Oger
Publisher : Springer Science & Business Media
Page : 407 pages
File Size : 47,6 Mb
Release : 2013-03-09
Category : Science
ISBN : 9789401585187

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Mobile Particulate Systems by E. Guazzelli,Luc Oger Pdf

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 : Vivek V. Ranade,Ranjeet P. Utikar
Publisher : John Wiley & Sons
Page : 838 pages
File Size : 54,5 Mb
Release : 2022-03-30
Category : Technology & Engineering
ISBN : 9783527812042

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Multiphase Flows for Process Industries by Vivek V. Ranade,Ranjeet P. Utikar Pdf

Discover the cutting-edge in multiphase flows used in the process industries In Multiphase Flows for Process Industries: Fundamentals and Applications, a team of accomplished chemical engineers delivers an insightful and complete treatment of the state-of-the-art in commonly encountered multiphase flows in the process industries. After discussing the theoretical background, experimental methods, and computational methods applicable to multiphase flows, the authors explore specific examples from the process industries. The book covers a wide range of multiphase flows, including gas-solid fluidized beds and flows with phase change. It also provides direction on how to use current advances in the field to realize efficient and optimized processes. Filling the gap between theory and practice, this unique reference also includes: A thorough introduction to multiphase flows and the process industry Practical discussions of flow regimes, lower order models and correlations, and the chronological development of mathematical models for multiphase flows Comprehensive explorations of experimental methods for characterizing multiphase flows, including flow imaging and visualization In-depth examinations of computational models for simulating multiphase flows Perfect for chemical and process engineers, Multiphase Flows for Process Industries: Fundamentals and Applications is required reading for graduate and doctoral students in the engineering sciences, as well as professionals in the chemical industry.

Author : Tarek I. Zohdi
Publisher : Springer Science & Business Media
Page : 124 pages
File Size : 41,5 Mb
Release : 2012-04-05
Category : Technology & Engineering
ISBN : 9783642285196

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Dynamics of Charged Particulate Systems by Tarek I. Zohdi Pdf

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.