Computational Techniques For Multiphase Flows

✏Book Title : Computational Techniques for Multiphase Flows
✏Author : Guan Heng Yeoh
✏Publisher : Elsevier
✏Release Date : 2009-10-07
✏Pages : 664
✏ISBN : 0080914896
✏Available Language : English, Spanish, And French

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✏Computational Techniques for Multiphase Flows Book Summary : Mixed or multiphase flows of solid/liquid or solid/gas are commonly found in many industrial fields, and their behavior is complex and difficult to predict in many cases. The use of computational fluid dynamics (CFD) has emerged as a powerful tool for the understanding of fluid mechanics in multiphase reactors, which are widely used in the chemical, petroleum, mining, food, beverage and pharmaceutical industries. Computational Techniques for Multiphase Flows enables scientists and engineers to the undertand the basis and application of CFD in muliphase flow, explains how to use the technique, when to use it and how to interpret the results and apply them to improving aplications in process enginering and other multiphase application areas including the pumping, automotive and energy sectors. Understandable guide to a complex subject Important in many industries Ideal for potential users of CFD

✏Book Title : Computational Techniques for Multiphase Flows
✏Author : Guan Heng Yeoh
✏Publisher : Butterworth-Heinemann
✏Release Date : 2019-02-27
✏Pages : 640
✏ISBN : 9780081024546
✏Available Language : English, Spanish, And French

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✏Computational Techniques for Multiphase Flows Book Summary : Computational Techniques for Multiphase Flows, Second Edition, provides the latest research and theories covering the most popular multiphase flows The book begins with an overview of the state-of-the-art techniques for multiple numerical methods in handling multiphase flow, compares them, and finally highlights their strengths and weaknesses. In addition, it covers more straightforward, conventional theories and governing equations in early chapters, moving on to the more modern and complex computational models and tools later in the book. It is therefore accessible to those who may be new to the subject while also featuring topics of interest to the more experienced researcher. Mixed or multiphase flows of solid/liquid or solid/gas are commonly found in many industrial fields, and their behavior is complex and difficult to predict in many cases. The use of computational fluid dynamics (CFD) has emerged as a powerful tool for understanding fluid mechanics in multiphase reactors, which are widely used in the chemical, petroleum, mining, food, automotive, energy, aerospace and pharmaceutical industries. This revised edition is an ideal reference for scientists, MSc students and chemical and mechanical engineers in these areas. Includes updated chapters in addition to a brand-new section on granular flows. Features novel solution methods for multiphase flow, along with recent case studies. Explains how and when to use the featured technique and how to interpret the results and apply them to improving applications.

✏Book Title : Computational Methods for Multiphase Flow
✏Author : Andrea Prosperetti
✏Publisher : Cambridge University Press
✏Release Date : 2009-06-25
✏Pages :
✏ISBN : 9781139459907
✏Available Language : English, Spanish, And French

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✏Computational Methods for Multiphase Flow Book Summary : Thanks to high-speed computers and advanced algorithms, the important field of modelling multiphase flows is an area of rapid growth. This one-stop account – now in paperback, with corrections from the first printing – is the ideal way to get to grips with this topic, which has significant applications in industry and nature. Each chapter is written by an acknowledged expert and includes extensive references to current research. All of the chapters are essentially independent and so the book can be used for a range of advanced courses and the self-study of specific topics. No other book covers so many topics related to multiphase flow, and it will therefore be warmly welcomed by researchers and graduate students of the subject across engineering, physics, and applied mathematics.

✏Book Title : Computational Methods in Multiphase Flow VI
✏Author : Andrea Alberto Mammoli
✏Publisher : WIT Press
✏Release Date : 2011-01-01
✏Pages : 321
✏ISBN : 9781845645182
✏Available Language : English, Spanish, And French

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✏Computational Methods in Multiphase Flow VI Book Summary : Multiphase flows, which can involve compressible or incompressible linear or nonlinear, fluids, Are found in all areas of technology, at all length scales and flow regimes. In spite of their ubiquitousness, however multiphase flow continues to be one of the most challenging areas of computational mechanics and experimental methods, with numerous problems remaining unsolved to date. Because the multiphase flow problems are so complex, advanced computational and experimental methods are often required to solve the equations that describe them. The many hhallenges include modelling nonlinear fluids, modelling and tracking interfaces, dealing with multiple length scales, characterizing phase structures, and treating drop breakup and coalescence. Models must be validated, which requires the use of expensive and difficult experimental techniquess. This book presents contributions on the latest research in these techniques, presented at the sixth in a biennial series of conferences on the subject that begain in 2001. Featured topics include: Bubble and drop dynamics, Flow in porous media, Turbulent flow, Multiphase flow simulation, Image processing, Heat transfer, Interaction of gases, liquids and solids, Interface behaviour, Small scale phenomena, Atomization processes, and Liquid film behaviour.

✏Book Title : Computational Methods in Multiphase Flow V
✏Author : Andrea Alberto Mammoli
✏Publisher : WIT Press
✏Release Date : 2009-01
✏Pages : 522
✏ISBN : 9781845641887
✏Available Language : English, Spanish, And French

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✏Computational Methods in Multiphase Flow V Book Summary : Together with turbulence, multiphase flow remains one of the most challenging areas of computational mechanics and experimental methods and numerous problems remain unsolved to date. Multiphase flows are found in all areas of technology, at all length scales and flow regimes. The fluids involved can be compressible or incompressible, linear or nonlinear. Because of the complexity of the problems, it is often essential to utilize advanced computational and experimental methods to solve the complex equations that describe them. Challenges in these simulations include modelling and tracking interfaces, dealing with multiple length scales, modelling nonlinear fluids, treating drop breakup and coalescence, characterizing phase structures, and many others. Experimental techniques, although expensive and difficult to perform, are essential to validate models. This book contains papers presented at the Fifth International Conference on Computational Methods in Multiphase Flow, which are grouped into the following topics: Multiphase Flow Simulation; Interaction of Gas, Liquids and Solids; Turbulent Flow; Environmental Multiphase Flow; Bubble and Drop Dynamics; Flow in Porous Media; Heat Transfer; Image Processing; Interfacial Behaviour.

✏Book Title : Computational Methods in Multiphase Flow VIII
✏Author : P. Vorobieff
✏Publisher : WIT Press
✏Release Date : 2015-04-20
✏Pages : 548
✏ISBN : 9781845649463
✏Available Language : English, Spanish, And French

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✏Computational Methods in Multiphase Flow VIII Book Summary : This book presents the latest research in one of the most challenging, yet most universally applicable areas of technology. Multiphase flows are found in all areas of technology, at all length scales and flow regimes, involving compressible or incompressible linear or nonlinear fluids. The range of related problems of interest is vast, including astrophysics, biology, geophysics, atmospheric process, and many areas of engineering. The solution of the equations that describe such complex problems often requires a combination of advanced computational and experimental methods. For example, any models developed must be validated through the application of expensive and difficult experimental techniques. Numerous problems in the area thus remain as yet unsolved, including modelling nonlinear fluids, modelling and tracking interfaces, dealing with multiple length scales, characterising phase structures, and treating drop break-up and coalescence. The papers contained in the book were presented at the eighth in a well established series of biennial conferences that began in 2001. They represent close interaction between numerical modellers and other researchers working to gradually resolve the many outstanding issues in understanding of multiphase flow. The papers in the book cover such topics as: Multiphase Flow Simulation; Bubble and Drop Dynamics; Interface Behaviour; Experimental Measurements; Energy Applications; Compressible Flows; Flow in Porous Media; Turbulent Flow; Image Processing; Heat Transfer; Atomization; Hydromagnetics; Plasma; Fluidised Beds; Cavitation.

✏Book Title : Computational Methods for Multiphase Flows in Porous Media
✏Author : Zhangxin Chen
✏Publisher : SIAM
✏Release Date : 2006-04-01
✏Pages : 531
✏ISBN : 9780898716061
✏Available Language : English, Spanish, And French

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✏Computational Methods for Multiphase Flows in Porous Media Book Summary : This book offers a fundamental and practical introduction to the use of computational methods. A thorough discussion of practical aspects of the subject is presented in a consistent manner, and the level of treatment is rigorous without being unnecessarily abstract. Each chapter ends with bibliographic information and exercises.

✏Book Title : Computational Methods in Multiphase Flow III
✏Author : Andrea Alberto Mammoli
✏Publisher : WIT Press
✏Release Date : 2005
✏Pages : 364
✏ISBN : 9781845640309
✏Available Language : English, Spanish, And French

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✏Computational Methods in Multiphase Flow III Book Summary : A common feature of multiphase flows is that a dispersed or discontinuous phase is being carried by a continuous phase, for example water drops in gas flow, solid particles in water flow, or gas bubbles in liquid flow. The overall behavior of the flow is shaped largely by the interaction between the discontinuous elements--drops, particles, bubbles

✏Book Title : Computational Methods in Multiphase Flow
✏Author : H. Power
✏Publisher : Computational Mechanics
✏Release Date : 2001
✏Pages : 336
✏ISBN : UVA:X004592236
✏Available Language : English, Spanish, And French

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✏Computational Methods in Multiphase Flow Book Summary : New advanced numerical methods and computer architectures have greatly improved our ability to solve complex multiphase flow problems.

✏Book Title : Computational Methods in Multiphase Flow VII
✏Author : C. A. Brebbia
✏Publisher : WIT Press
✏Release Date : 2013-07-03
✏Pages : 556
✏ISBN : 9781845647346
✏Available Language : English, Spanish, And French

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✏Computational Methods in Multiphase Flow VII Book Summary : Multiphase flows are found in all areas of technology, at all length scales and flow regimes and can involve compressible or incompressible linear or nonlinear, fluids. However, although they are ubiquitous, multiphase flows continue to be one of the most challenging areas of computational mechanics, with numerous problems as yet unsolved. Advanced computational and experimental methods are often required to solve the equations that describe such complex problems. The many challenges that must be faced in solving them include modelling nonlinear fluids, modelling and tracking interfaces, dealing with multiple length scales, characterising phase structures, and treating drop break-up and coalescence. It is important to validate models, which calls for the use of expensive and difficult experimental techniques.This book presents contributions on the latest research in the techniques for solving multiphase flow problems, presented at the seventh in a biennial series of conferences on the subject that began in 2001. Featured topics include: Flow in porous media; Turbulent flow; Multiphase flow simulation; Image processing; Heat transfer; Atomization; Interface behaviour; Oil and gas applications; Experimental measurements; Energy applications; Biological flows; Micro and macro fluids; Compressible flows.

✏Book Title : Computational Methods in Multiphase Flow III
✏Author : Andrea Alberto Mammoli
✏Publisher : WIT Press
✏Release Date : 2005
✏Pages : 364
✏ISBN : 1845640306
✏Available Language : English, Spanish, And French

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✏Computational Methods in Multiphase Flow III Book Summary : A common feature of multiphase flows is that a dispersed or discontinuous phase is being carried by a continuous phase, for example water drops in gas flow, solid particles in water flow, or gas bubbles in liquid flow. The overall behavior of the flow is shaped largely by the interaction between the discontinuous elements--drops, particles, bubbles

✏Book Title : Computational Methods in Multiphase Flow IV
✏Author : A.A. Mammoli
✏Publisher : WIT Press
✏Release Date : 2007-05-11
✏Pages : 416
✏ISBN : 9781845640798
✏Available Language : English, Spanish, And French

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✏Computational Methods in Multiphase Flow IV Book Summary : Fluid Dynamics is one of the most important topics of applied mathematics and physics. Together with complex flows and turbulence, multiphase flows remains one of the most challenging areas of computational mechanics, and even seemingly simple problems remain unsolved to date. Multiphase flows are found in all areas of technology, at all length scales and flow regimes. The fluids involved can be compressible or incompressible, linear or nonlinear. Because of the complexity of the problem, it is often essential to utilize advanced computational and experimental methods to solve the complex equations that describe them. Challenges in these simulations include nonlinear fluids, treating drop breakup and coalescence, characterizing phase structures, and many others.This volume brings together work presented at the Fourth International Conference on Computational and Experimental Methods in Multiphase and Complex Flows. Featured topics include: Suspensions; Bubble and Drop Dynamics; Flow in Porous Media; Interfaces; Turbulent Flow; Injectors and Nozzles; Particle Image Velocimetry; Macroscale Constitutive Models; Large Eddy Simulation; Finite Volumes; Interface Tracking Methods; Biological Flows; Environmental Multiphase Flow; Phase Changes and Stochastic Modelling.

✏Book Title : Multiphase Flow
✏Author : S. Hernández
✏Publisher : WIT Press
✏Release Date : 2020-06-03
✏Pages : 136
✏ISBN : 9781784664176
✏Available Language : English, Spanish, And French

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✏Multiphase Flow Book Summary : The research included in this volume focuses on using synergies between experimental and computational techniques to gain a better understanding of all classes of multiphase and complex flow. The included papers illustrate the close interaction between numerical modellers and researchers working to gradually resolve the many outstanding issues in our understanding of multiphase flow. Recently multiphase fluid dynamics have generated a great deal of attention, leading to many notable advances in experimental, analytical and numerical studies. Progress in numerical methods has permitted the solution of many practical problems, helping to improve our understanding of the physics involved. Multiphase flows are found in all areas of technology and the range of related problems of interest is vast, including astrophysics, biology, geophysics, atmospheric process, and many areas of engineering.

✏Book Title : Exam Prep for Computational Techniques for Multiphase Flows
✏Author :
✏Publisher :
✏Release Date :
✏Pages :
✏ISBN :
✏Available Language : English, Spanish, And French

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✏Exam Prep for Computational Techniques for Multiphase Flows Book Summary :

✏Book Title : Computational Experimental Methods in Multiphase Complex Flow X
✏Author : S. Hernández
✏Publisher : WIT Press
✏Release Date : 2019-07-23
✏Pages : 250
✏ISBN : 9781784663292
✏Available Language : English, Spanish, And French

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✏Computational Experimental Methods in Multiphase Complex Flow X Book Summary : Composed of papers presented at the 10th conference on Multiphase flow this book presents the latest research on the subject. The research included in this volume focuses on using synergies between experimental and computational techniques to gain a better understanding of all classes of multiphase and complex flow.

✏Book Title : Computational Techniques
✏Author : Dimitri Gidaspow
✏Publisher : Nova Science Pub Incorporated
✏Release Date : 2009-01
✏Pages : 642
✏ISBN : 1608760243
✏Available Language : English, Spanish, And French

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✏Computational Techniques Book Summary : Book & CD-ROM. This text has been used in the form of class notes taught to graduate and senior undergraduate students in chemical and mechanical engineering at Illinois Institute of Technology for the last three decades. The computer codes, particularly the Navier-Stokes equation solvers, have been continually updated by several Ph.D. students over the last decade. The theory of fluidisation and multiphase flow is based on the new paradigm that emerged in the 1980s as granular flow. Commercial CFD codes, such as FLUENT, already use this theory. However, this theory is not yet complete. Hence the programs described in this text can be easily updated as new theory is developed. For example, the codes can be extended to anisotropic and multi-size particle flow based on the emerging kinetic theories. Hence this book should be useful to research engineers in industry, to graduate students and to professors teaching a first course in computational techniques. In this book the authors illustrate how their code as well as the commercial codes can be used for the design of green energy technology processes.

✏Book Title : Validation of Advanced Computational Methods for Multiphase Flow
✏Author : Herve Lemonnier
✏Publisher : Begell House Publishers
✏Release Date : 2005-01-01
✏Pages : 300
✏ISBN : 1567002188
✏Available Language : English, Spanish, And French

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✏Validation of Advanced Computational Methods for Multiphase Flow Book Summary :

✏Book Title : Numerical Treatment of Multiphase Flows in Porous Media
✏Author : Zhangxin Chen
✏Publisher : Springer
✏Release Date : 2008-01-11
✏Pages : 446
✏ISBN : 9783540454670
✏Available Language : English, Spanish, And French

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✏Numerical Treatment of Multiphase Flows in Porous Media Book Summary : The need to predict, understand, and optimize complex physical and c- mical processes occurring in and around the earth, such as groundwater c- tamination, oil reservoir production, discovering new oil reserves, and ocean hydrodynamics, has been increasingly recognized. Despite their seemingly disparate natures, these geoscience problems have many common mathe- tical and computational characteristics. The techniques used to describe and study them are applicable across a broad range of areas. The study of the above problems through physical experiments, mat- matical theory, and computational techniques requires interdisciplinary col- boration between engineers, mathematicians, computational scientists, and other researchers working in industry, government laboratories, and univ- sities. By bringing together such researchers, meaningful progress can be made in predicting, understanding, and optimizing physical and chemical processes. The International Workshop on Fluid Flow and Transport in Porous - dia was successfully held in Beijing, China, August 2{6, 1999. The aim of this workshop was to bring together applied mathematicians, computational scientists, and engineers working actively in the mathematical and nume- cal treatment of ?uid ?ow and transport in porous media. A broad range of researchers presented papers and discussed both problems and current, state-of-the-art techniques.

✏Book Title : Mathematical and Computational Methods of Non Newtonian Multiphase Flows
✏Author : Robert Sawko
✏Publisher :
✏Release Date : 2012
✏Pages :
✏ISBN : OCLC:806196617
✏Available Language : English, Spanish, And French

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✏Mathematical and Computational Methods of Non Newtonian Multiphase Flows Book Summary : The research presented in this thesis is concerned with the development ofnumerical techniques and mathematical models for non-Newtonian uidsand two-phase ows in pipes and channels. Single phase, turbulent ow calculations of non-Newtonian uids were performedinitially. Based on the literature a revised approach to wall modellingis proposed and implemented. The approach uses analytical andexperimental analyses of the turbulent boundary layer structure. A comparisonwith the standard approach is presented. The interaction between turbulence and non-Newtonian behaviour is studiedby examining the rate of strain induced by uctuating components ofvelocity. The statistical analysis of published DNS data is performed. Finally, a model is proposed where the turbulent rate of strain is determinedfrom turbulence quantities used by the Reynolds-averaged Navier{Stokesmodel and used in the calculation of molecular viscosity. For two-phase ow, the solution procedure using periodic boundary conditionswas developed under an assumption of a at interface. The numericaltechnique was veri ed by comparing to an analytical result obtained forlaminar ow in a channel. An extension to three dimensional ow is performed. With periodic boundary conditions standard turbulence models are appliedto two-phase strati ed ow. Several models and their corrections for twophaseow are assessed and a new model is proposed. The numerical studieswere carried out primiarily in the open-source code OpenFOAM, but initialattempts were made in commercial packages such as STAR-CD and FLUENT. Experimental data collected from the literature are used to verify theresults showing good agreement in pressure drops and phase fractions.

✏Book Title : Exam Prep Flash Cards for Computational Techniques for
✏Author :
✏Publisher :
✏Release Date :
✏Pages :
✏ISBN :
✏Available Language : English, Spanish, And French

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✏Exam Prep Flash Cards for Computational Techniques for Book Summary :

✏Book Title : Numerical Methods in Multiphase Flows
✏Author :
✏Publisher :
✏Release Date : 1994
✏Pages :
✏ISBN : UOM:39015030274107
✏Available Language : English, Spanish, And French

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✏Numerical Methods in Multiphase Flows Book Summary :

✏Book Title : The History of Multiphase Science and Computational Fluid Dynamics
✏Author : Robert W. Lyczkowski
✏Publisher : Springer
✏Release Date : 2017-10-10
✏Pages : 334
✏ISBN : 9783319665023
✏Available Language : English, Spanish, And French

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✏The History of Multiphase Science and Computational Fluid Dynamics Book Summary : This book tells the story of how the science of computational multiphase flow began in an effort to better analyze hypothetical light water power reactor accidents, including the “loss of coolant” accident. Written in the style of a memoir by an author with 40 years’ engineering research experience in computer modeling of fluidized beds and slurries, multiphase computational fluid dynamics, and multiphase flow, most recently at Argonne National Laboratory, the book traces how this new science developed during this time into RELAP5 and other computer programs to encompass realistic descriptions of phenomena ranging from fluidized beds for energy and chemicals production, slurry transport, pyroclastic flow from volcanoes, hemodynamics of blood-borne cells, and flow of granular particulates. Such descriptions are not possible using the classical single-phase Navier-Stokes equations. Whereas many books on computational techniques and computational fluid dynamics have appeared, they do not trace the historical development of the science in any detail, and none touch on the beginnings of multiphase science. A robust, process-rich account of technologic evolution, the book is ideal for students and practitioners of mechanical, chemical, nuclear engineering, and the history of science and technology.

✏Book Title : IUTAM Symposium on Computational Approaches to Multiphase Flow
✏Author : S. Balachandar
✏Publisher : Springer Science & Business Media
✏Release Date : 2007-01-28
✏Pages : 450
✏ISBN : 9781402049774
✏Available Language : English, Spanish, And French

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✏IUTAM Symposium on Computational Approaches to Multiphase Flow Book Summary : The book provides a broad overview of the full spectrum of state-of-the-art computational activities in multiphase flow as presented by top practitioners in the field. It starts with well-established approaches and builds up to newer methods. These methods are illustrated with applications to a broad spectrum of problems involving particle dispersion and deposition, turbulence modulation, environmental flows, fluidized beds, bubbly flows, and many others.

✏Book Title : Computational Methods in Subsurface Flow
✏Author : Peter S. Huyakorn
✏Publisher : Academic Press
✏Release Date : 2012-12-02
✏Pages : 473
✏ISBN : 9780323137973
✏Available Language : English, Spanish, And French

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✏Computational Methods in Subsurface Flow Book Summary : Computational Methods in Subsurface Flow explores the application of all of the commonly encountered computational methods to subsurface problems. Among the problems considered in this book are groundwater flow and contaminant transport; moisture movement in variably saturated soils; land subsidence and similar flow and deformation processes in soil and rock mechanics; and oil and geothermal reservoir engineering. This book is organized into 10 chapters and begins with an introduction to partial differential and various solution approaches used in subsurface flow. The discussion then shifts to the fundamental theory of the finite element method, with emphasis on the Galerkin finite element method and how it can be used to solve a wide range of subsurface problems. The subjects treated range from simple problems of saturated groundwater flow to more complex ones of moisture movement and multiphase flow in petroleum reservoirs. The chapters that follow focus on fluid flow and mechanical deformation of conventional and fractured porous media; point and subdomain collocation techniques and the boundary element technique; and the applications of finite difference techniques to single- and multiphase flow and solute transport. The final chapter is devoted to other alternative numerical methods that are based on combinations of the standard finite difference approach and classical mathematics. This book is intended for senior undergraduate and graduate students in geoscience and engineering, as well as for professional groundwater hydrologists, engineers, and research scientists who want to solve or model subsurface problems using numerical techniques.

✏Book Title : Computational Methods for Complex Liquid Fluid Interfaces
✏Author : Mohammad Taeibi Rahni
✏Publisher : CRC Press
✏Release Date : 2015-11-11
✏Pages : 538
✏ISBN : 9781498722094
✏Available Language : English, Spanish, And French

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✏Computational Methods for Complex Liquid Fluid Interfaces Book Summary : Computational Methods for Complex Liquid-Fluid Interfaces highlights key computational challenges involved in the two-way coupling of complex liquid-fluid interfaces. The book covers a variety of cutting-edge experimental and computational techniques ranging from macro- to meso- and microscale approaches (including pivotal applications). As examples, the text: defines the most important interfacial quantities and their experimental investigations, providing theoretical background and detailed solutions, describes vital techniques used in interfacial flow problems, such as modern meshless numerical methods and conventional computational fluid dynamics methods, and discusses the technicalities of correctly using the computational methods developed for interfacial flows, as well as the simulation of interesting interfacial flow physics. Edited and authored by leading scientists and researchers, Computational Methods for Complex Liquid-Fluid Interfaces offers an authoritative and state-of-the-art overview of computational methodologies and simulation techniques for the quantification of interfacial quantities.

✏Book Title : Numerical Methods for Multiphase Flows
✏Author : Ismail Celik
✏Publisher :
✏Release Date : 1990
✏Pages : 96
✏ISBN : 0791804887
✏Available Language : English, Spanish, And French

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✏Numerical Methods for Multiphase Flows Book Summary :

✏Book Title : DNS of Multiphase Flows Study of Atomization and Free surface Phenomena
✏Author : Eugenio Schillaci
✏Publisher :
✏Release Date : 2018
✏Pages : 204
✏ISBN : OCLC:1120457686
✏Available Language : English, Spanish, And French

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✏DNS of Multiphase Flows Study of Atomization and Free surface Phenomena Book Summary : The present thesis focuses on the numerical analysis of some diverse physical set-up that involve the interaction of two -or three immiscible and incompressible phases. The simulations are carried out by means of finite-volume algorithms developed on the in-house Computational Fluid Dynamics platform TermoFluids, developed by the Heat and Mass Transfer Technological Center (CTTC). They are intended to give detailed insights on the physics of the analyzed phenomena by carrying out Direct Numerical Simulations (DNS). In the context of multiphase flows, namely, Computational Multi-Fluid Dynamics (CMFD) field, DNS means that all the interfacial and turbulent scales of the phenomenon must be fully resolved. In the Introduction, a general overview of the engineering applications and the computational methods related to multiphase flows is proposed. The various types of physics analyzed in this work and the numerical approaches applied here to carry out efficient simulations are introduced. In Chapter 2, a low-dissipation convection scheme for the stable discretization of multiphase flow by means of interface-capturing schemes is analyzed. The hybrid form of the convective operator proposed incorporates localized low-dispersion characteristics to limit the growth of spurious flow solutions. Moreover, in comparison to pure-dissipative schemes, the discretization aims at minimizing the differences in kinetic energy preservation with respect to the continuous governing equations. This property plays a fundamental role in the case of flows presenting significant levels of turbulence. The simulation of a turbulent 2D coaxial jet with the low-dissipation convection scheme demonstrates its capability of solving correctly the two-phase turbulent problems. In Chapter 3, all the work carried out on the simulation of two-phase flow with the aid of Adaptive Mesh Refinement (AMR) strategies is described. The model is globally addressed at improving the representation of interfacial and turbulent scales in general multiphase flows. It is first applied to the simulation of simple multiphase phenomena, as 2D and 3D rising bubbles, to demonstrate the convergence of the method and the important computational savings in comparison to static mesh computations. However, its adoption becames essential in the simulation of instability and break-up phenomena, where the necessity of representing accurately the complex structures that appear at the interface, as ligaments and droplets, make the simulation particularly expensive in terms of computational cost. In Chapter 4, we analyze in detail the simulations of 3-D atomizing phenomena, including the coaxial jet case, characterized by the parallel injection of high speed liquid and gas fluxes, and the liquid spray case, characterized by the injection of a high speed liquid inside a still air chamber. In Chapter 5, an original single-phase scheme for the DNS of free-surface problems on 3-D unstructured meshes is presented. The scheme is based on a novel treatment of the interface for the deactivation of the light-phase, allowing an optimization of the classic two-phase model for the cases in which the influence of the lighter phase is negligible. Consequently, the model is particularly addressed at analyzing problems involving the movement of free-surfaces, as the evolution of waves on the sea, and their interaction with fixed and moving obstacles. Some practical cases of application are proposed, as the evaluation of stresses on an object due to the action of a dam-break event, and the interaction of linear waves with an oscillating water column device. In the same Chapter we describe the procedure to couple the single-phase model to the Immersed Boundary Method. The method is aimed at representing the interaction of a solid moving with prescribed velocity and the two-phase flow. The most significant example consists in the simulation of a sliding wedge into a liquid basin.

✏Book Title : Multiphase Flows with Droplets and Particles
✏Author : Clayton T. Crowe
✏Publisher : CRC Press
✏Release Date : 2011-08-26
✏Pages : 509
✏ISBN : 9781439840511
✏Available Language : English, Spanish, And French

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✏Multiphase Flows with Droplets and Particles Book Summary : Since the publication of the first edition of Multiphase Flow with Droplets and Particles, there have been significant advances in science and engineering applications of multiphase fluid flow. Maintaining the pedagogical approach that made the first edition so popular, this second edition provides a background in this important area of fluid mecha

✏Book Title : Computational Fluid Dynamics
✏Author : T. J. Chung
✏Publisher : Cambridge University Press
✏Release Date : 2002-02-07
✏Pages : 1012
✏ISBN : 0521594162
✏Available Language : English, Spanish, And French

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✏Computational Fluid Dynamics Book Summary : An authoritative text covering elementary concepts to state-of-the-art techniques in computational fluid dynamics.

✏Book Title : Computational Fluid Dynamics Review 1998 In 2 Volumes
✏Author : Hafez Mohamed M
✏Publisher : World Scientific
✏Release Date : 1998-11-20
✏Pages : 1160
✏ISBN : 9789814495776
✏Available Language : English, Spanish, And French

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✏Computational Fluid Dynamics Review 1998 In 2 Volumes Book Summary : The first volume of CFD Review was published in 1995. The purpose of this new publication is to present comprehensive surveys and review articles which provide up-to-date information about recent progress in computational fluid dynamics, on a regular basis. Because of the multidisciplinary nature of CFD, it is difficult to cope with all the important developments in related areas. There are at least ten regular international conferences dealing with different aspects of CFD.It is a real challenge to keep up with all these activities and to be aware of essential and fundamental contributions in these areas. It is hoped that CFD Review will help in this regard by covering the state-of-the-art in this field.The present book contains sixty-two articles written by authors from the US, Europe, Japan and China, covering the main aspects of CFD. There are five sections: general topics, numerical methods, flow physics, interdisciplinary applications, parallel computation and flow visualization. The section on numerical methods includes grids, schemes and solvers, while that on flow physics includes incompressible and compressible flows, hypersonics and gas kinetics as well as transition and turbulence. This book should be useful to all researchers in this fast-developing field.