Numerical Simulation Of Gas Liquid Bubbly Flows

Author : Grétar Tryggvason,Ruben Scardovelli,Stéphane Zaleski
Publisher : Cambridge University Press
Page : 337 pages
File Size : 51,8 Mb
Release : 2011-03-10
Category : Computers
ISBN : 9781139496704

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Direct Numerical Simulations of Gas–Liquid Multiphase Flows by Grétar Tryggvason,Ruben Scardovelli,Stéphane Zaleski Pdf

Accurately predicting the behaviour of multiphase flows is a problem of immense industrial and scientific interest. Modern computers can now study the dynamics in great detail and these simulations yield unprecedented insight. This book provides a comprehensive introduction to direct numerical simulations of multiphase flows for researchers and graduate students. After a brief overview of the context and history the authors review the governing equations. A particular emphasis is placed on the 'one-fluid' formulation where a single set of equations is used to describe the entire flow field and interface terms are included as singularity distributions. Several applications are discussed, showing how direct numerical simulations have helped researchers advance both our understanding and our ability to make predictions. The final chapter gives an overview of recent studies of flows with relatively complex physics, such as mass transfer and chemical reactions, solidification and boiling, and includes extensive references to current work.

Author : Martin Sommerfeld
Publisher : Springer Science & Business Media
Page : 354 pages
File Size : 43,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642185403

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Bubbly Flows by Martin Sommerfeld Pdf

The book summarises the outcom of a priority research programme: 'Analysis, Modelling and Computation of Multiphase Flows'. The results of 24 individual research projects are presented. The main objective of the research programme was to provide a better understanding of the physical basis for multiphase gas-liquid flows as they are found in numerous chemical and biochemical reactors. The research comprises steady and unsteady multiphase flows in three frequently found reactor configurations, namely bubble columns without interiors, airlift loop reactors, and aerated stirred vessels. For this purpose new and improved measurement techniques were developed. From the resulting knowledge and data, new and refined models for describing the underlying physical processes were developed, which were used for the establishment and improvement of analytic as well as numerical methods for predicting multiphase reactors. Thereby, the development, lay-out and scale-up of such processes should be possible on a more reliable basis.

Author : Chao Yang,Zai-Sha Mao
Publisher : Academic Press
Page : 322 pages
File Size : 54,9 Mb
Release : 2014-09-04
Category : Technology & Engineering
ISBN : 9780124115798

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Numerical Simulation of Multiphase Reactors with Continuous Liquid Phase by Chao Yang,Zai-Sha Mao Pdf

Numerical simulation of multiphase reactors with continuous liquid phase provides current research and findings in multiphase problems, which will assist researchers and engineers to advance this field. This is an ideal reference book for readers who are interested in design and scale-up of multiphase reactors and crystallizers, and using mathematical model and numerical simulation as tools. Yang and Mao’s book focuses on modeling and numerical applications directly in the chemical, petrochemical, and hydrometallurgical industries, rather than theories of multiphase flow. The content will help you to solve reacting flow problems and/or system design/optimization problems. The fundamentals and principles of flow and mass transfer in multiphase reactors with continuous liquid phase are covered, which will aid the reader’s understanding of multiphase reaction engineering. Provides practical applications for using multiphase stirred tanks, reactors, and microreactors, with detailed explanation of investigation methods Presents the most recent research efforts in this highly active field on multiphase reactors and crystallizers Covers mathematical models, numerical methods and experimental techniques for multiphase flow and mass transfer in reactors and crystallizers

Author : Michael Schlüter,Dieter Bothe,Sonja Herres-Pawlis,Ulrich Nieken
Publisher : Springer Nature
Page : 642 pages
File Size : 48,9 Mb
Release : 2021-07-29
Category : Technology & Engineering
ISBN : 9783030723613

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Reactive Bubbly Flows by Michael Schlüter,Dieter Bothe,Sonja Herres-Pawlis,Ulrich Nieken Pdf

This book presents experimental and numerical methods that have been developed during six years of targeted research within the DFG priority program SPP 1740, elucidating the interaction between hydrodynamics, mass transfer and transport as well as chemical reactions in bubbly flows. A special feature of this book is its focus on an interdisciplinary research approach with contributions from chemistry, mathematics and engineering sciences, providing enhanced or novel experimental methods, models and numerical simulations. This book provides fundamental knowledge to students about the current state of knowledge regarding transport processes in reactive bubbly flows as well as to scientists, emphasizing pressing research questions and further current demands for fundamental research. Engineers from the chemical industries will get valuable insights into relevant gas-liquid processes and benefit from recommendations concerning the design of gas-liquid reactors and laboratory experiments for studying the performance of gas-liquid reactions in their own lab.

Author : Chengsi Zhou
Publisher : Unknown
Page : 136 pages
File Size : 50,6 Mb
Release : 2017
Category : Electronic
ISBN : OCLC:1105382823

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Numerical Simulation and Experimental Investigations of Two-phase Flow in Singularities by Chengsi Zhou Pdf

Numerical simulations and experimental investigations of rising individual Taylor bubble through a vertical sudden expansion and contraction in stagnant Newtonian liquid is presented. The CFD procedure is based on the open source package Gerris which adopts the volume-of-fluid (VOF) method to represent the gas/liquid interface. The numerical method is verified using the existing results of single Taylor bubbles rising in straight columns. The experiments investigate a nitrogen bubble rising in a water-glycerol mixture for different concentrations. The pipe diameter ratio ranges from 0.69 to 1.72. The images of the bubble rising through the singularities are captured by a high-speed camera. Our investigations focus on the transient process of the bubbles passing the singularity. The variations of the bubble velocity and the liquid film thickness are investigated. The results show that the greater expansion ratios yield more perturbations on the bubbles and have strong effects on the tail of the bubble. The unstable bubble tails are cut off into smaller bubbles in some of the test cases and a bubble break-up regime map obtained by simulations has been proposed. The bubble shape variations depend also on the length of the bubbles. For a bubble passing through a contraction, the blocking phenomenon has been observed and a map has been proposed. Finally, this study, based on a large range of Eötvös numbers and expansion/contraction ratios, provides new insights to better understand the effect of singularities on rising Taylor bubbles.

Author : Bernard Bunner
Publisher : Unknown
Page : 544 pages
File Size : 45,6 Mb
Release : 2000
Category : Electronic
ISBN : UOM:39015047536050

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Numerical Simulation of Gas-liquid Bubbly Flows by Bernard Bunner Pdf

Author : Grétar Tryggvason,Ruben Scardovelli,S. Zaleski
Publisher : Unknown
Page : 324 pages
File Size : 52,6 Mb
Release : 2011
Category : Gas-liquid interfaces
ISBN : 1139155229

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Direct Numerical Simulations of Gas-liquid Multiphase Flows by Grétar Tryggvason,Ruben Scardovelli,S. Zaleski Pdf

A comprehensive introduction to direct numerical simulations of multiphase flows for researchers and graduate students in various fields.

Author : Michael Breuer,Franz Durst,Christoph Zenger
Publisher : Springer Science & Business Media
Page : 420 pages
File Size : 41,5 Mb
Release : 2012-12-06
Category : Computers
ISBN : 9783642559198

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High Performance Scientific And Engineering Computing by Michael Breuer,Franz Durst,Christoph Zenger Pdf

In Douglas Adams' book 'Hitchhiker's Guide to the Galaxy', hyper-intelligent beings reached a point in their existence where they wanted to understand the purpose of their own existence and the universe. They built a supercomputer, called Deep Thought, and upon completion, they asked it for the answer to the ultimate question of life, the universe and everything else. The computer worked for several millennia on the answers to all these questions. When the day arrived for hyper-intelligent beings the to receive the answer, they were stunned, shocked and disappointed to hear that the answer was simply 42. The still open questions to scientists and engineers are typically much sim pler and consequently the answers are more reasonable. Furthermore, because human beings are too impatient and not ready to wait for such a long pe riod, high-performance computing techniques have been developed, leading to much faster answers. Based on these developments in the last two decades, scientific and engineering computing has evolved to a key technology which plays an important role in determining, or at least shaping, future research and development activities in many branches of industry. Development work has been going on all over the world resulting in numerical methods that are now available for simulations that were not foreseeable some years ago. However, these days the availability of supercomputers with Teraflop perfor mance supports extensive computations with technical relevance. A new age of engineering has started.

Author : Paul On-Yee Yeung
Publisher : Unknown
Page : 494 pages
File Size : 55,8 Mb
Release : 1981
Category : Gas cooled reactors
ISBN : WISC:89015180763

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Numerical Simulation of Gas-liquid Reactors by Paul On-Yee Yeung Pdf

Author : Subrata Kumar Majumder
Publisher : Elsevier
Page : 462 pages
File Size : 40,8 Mb
Release : 2016-03-31
Category : Technology & Engineering
ISBN : 9780128032886

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Hydrodynamics and Transport Processes of Inverse Bubbly Flow by Subrata Kumar Majumder Pdf

Hydrodynamics and Transport Processes of Inverse Bubbly Flow provides the science and fundamentals behind hydrodynamic characteristics, including flow regimes, gas entrainment, pressure drop, holdup and mixing characteristics, bubble size distribution, and the interfacial area of inverse bubble flow regimes. Special attention is given to mass and heat transfer. This book is an indispensable reference for researchers in academia and industry working in chemical and biochemical engineering. Hydrodynamics and Transport Processes of Inverse Bubbly Flow helps facilitate a better understanding of the phenomena of multiphase flow systems as used in chemical and biochemical industries. A first book in the market dedicated to the hydrodynamics of inverse bubbly flows Includes fundamentals of conventional and inverse bubble columns for different hydrodynamic parameters Includes recommendations for future applications of bubble flows

Author : Hugo A. Jakobsen
Publisher : Springer Science & Business Media
Page : 1535 pages
File Size : 51,8 Mb
Release : 2014-04-02
Category : Technology & Engineering
ISBN : 9783319050928

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Chemical Reactor Modeling by Hugo A. Jakobsen Pdf

Chemical Reactor Modeling closes the gap between Chemical Reaction Engineering and Fluid Mechanics. The second edition consists of two volumes: Volume 1: Fundamentals. Volume 2: Chemical Engineering Applications In volume 1 most of the fundamental theory is presented. A few numerical model simulation application examples are given to elucidate the link between theory and applications. In volume 2 the chemical reactor equipment to be modeled are described. Several engineering models are introduced and discussed. A survey of the frequently used numerical methods, algorithms and schemes is provided. A few practical engineering applications of the modeling tools are presented and discussed. The working principles of several experimental techniques employed in order to get data for model validation are outlined. The monograph is based on lectures regularly taught in the fourth and fifth years graduate courses in transport phenomena and chemical reactor modeling and in a post graduate course in modern reactor modeling at the Norwegian University of Science and Technology, Department of Chemical Engineering, Trondheim, Norway. The objective of the book is to present the fundamentals of the single-fluid and multi-fluid models for the analysis of single and multiphase reactive flows in chemical reactors with a chemical reactor engineering rather than mathematical bias. Organized into 13 chapters, it combines theoretical aspects and practical applications and covers some of the recent research in several areas of chemical reactor engineering. This book contains a survey of the modern literature in the field of chemical reactor modeling.

Author : K. Schügerl,K.-H. Bellgardt
Publisher : Springer Science & Business Media
Page : 639 pages
File Size : 52,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642597350

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Bioreaction Engineering by K. Schügerl,K.-H. Bellgardt Pdf

Alongside presenting the fundamentals, this book reviews the state of the art of mathematical modeling and control of bioprocesses, while demonstrating the application in various biological systems important to industry. At the same time, the application of different types of models and control strategies are illustrated, taking into account the recent developments in reactor modeling. In addition to modeling and control, the metabolic flux analysis and the metabolic design and their application to bioprocesses are considered.

Author : Egon Krause,Willi Jäger
Publisher : Springer Science & Business Media
Page : 562 pages
File Size : 40,9 Mb
Release : 2001
Category : Computers
ISBN : 3540412131

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High Performance Computing in Science and Engineering 2000 by Egon Krause,Willi Jäger Pdf

Spinodal Decomposition in Binary Polymer Blends: Monte Carlo Simulations and Dynamic Mean Field Theory.- Dynamics of Convection and Dynamos in Rotating Spheres.- Recent Developments in IMD: Interactions for Covalent and Metallic Systems.- Finite Difference Modelling of Seismic Wave Phenomena within the Earth's Upper Mantle.- Collisional Dynamics of Black Holes and Star Clusters Using Massively Parallel Computing.- Three-Dimensional Direct and Inverse Electromagnetic Scattering.- Precession Driven Flow in Ellipsoidal Cavities.- The Computation of Highly Exited Hyperbolic 3D-eigenmodes and its Application to Cosmology.- Fluid Jet Simulations using Smoothed Particle Hydrodynamics.- Spectral Properties of CUO2 Planes in a Cluster Perturbation Approach.- Electronic, Structural and Vibrational Properties of Chalcogenides on Si(001) and Ge(001) Surfaces.- Dynamical Properties of the t-J Model.- Effects of Three Nucleon-Interactions in A = 4.- Phase Transitions in Insulating 1D Electron Systems.- Excited States of Semiconductors and Molecules.- Jacobi-Davidson Algorithm with Fast Matrix-Vector Multiplikation on Massively Parallel and Vector Supercomputers.- Time-dependent Reactive Scattering for Ion-neutral Collisions.- Ground and Exited States of the Hydrogen Negative Ion and Negative Donor Systems in Strong Magnetic Fields.- Quantum Chemical Calculations of Transition Metal Complexes.- Car-Parrinello Density Functional Calculations of the Bond Rupture Process of Thiolate on Gold in AFM Measurements: Progress and First Results.- DNS of Laminar-Turbulent Transition in a 3D Aerodynamics Boundary-Layer Flow.- High-Performance Computing: Numerical Simulation of the Melt Flow in an Industrial Czochralski Cruzible.- Analysis of an Elastic Wing in Subsonic Flow Using Direct Numerical Aeroelastic Simulation.- Large Eddy Simulation of the Flow over a Matrix of Surface-mounted Cubes.- Simulation of Bubbly Gas-Liquid Flows by a Parallel Finite-Difference /Front-Tracking Method.- Rotary Wing Aerodynamics and Aeroelasticity.- Unsteady Flow Simulations for Turbomachinery Applications on Dynamic Grids.- Testing Turbulence Models by Comparison with DNS Data of Adverse-pressure-gradient Boundary Layer Flow.- Large Eddy Simulation of Subcritical Flow around Sphere.- LES of Turbulent Flows Trough 90°-Pipe Bends on NEC SX-4.- Computations for the European LESFOIL Project.- Correlation Analysis of Permixed Turbulent Flames Using Direct Numerical Simulations.- Adaptive Chemistry Computation to Accelerate Parallel DNS of Turbulent Combustion.- The Generation of Dissipative Quasi-Particles near Turing's Bifurcation in Three-Dimensional Reacting Diffusion Systems.- Upwind Relaxation Algorithm for Reentry Nonequilibrium Flows.- Numerical Simulation of the Coupled Dynamic Processes of the Water-Steam Cycle and the Furnace System.- Container Size Dependence of the Velocity Fluctuations in Suspension of Monodisperse Spheres.- Implementing Luby's Algorithm on the CRAY T3E.- Spatial Partitioning for Parallel Hierarchical Radiosity on Distributed Memory Architectures.- Construction of Large Permutation Representations for Matrix Groups on Parallel Supercomputers.- Advances in High-Performance Computing: Multigrid Methods for Partial Differential Equations and its Applications.- Recent Advances of SKaMPI.- Porting SPLASH-2 Benchmarks to the T3E.

Author : Sunggyu Lee,Kimberly H. Henthorn
Publisher : CRC Press
Page : 335 pages
File Size : 48,9 Mb
Release : 2016-04-19
Category : Science
ISBN : 9781439881682

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Particle Technology and Applications by Sunggyu Lee,Kimberly H. Henthorn Pdf

Particle Technology and Applications presents the theoretical and technological background of particle science and explores up-to-date applications of particle technologies in the chemical, petrochemical, energy, mechanical, and materials industries. It looks at the importance of particle science and technology in the development of efficient chemi

Author : Sunggyu Lee
Publisher : CRC Press
Page : 3338 pages
File Size : 49,9 Mb
Release : 2005-11-01
Category : Science
ISBN : 9781351237680

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Encyclopedia of Chemical Processing (Online) by Sunggyu Lee Pdf

This second edition Encyclopedia supplies nearly 350 gold standard articles on the methods, practices, products, and standards influencing the chemical industries. It offers expertly written articles on technologies at the forefront of the field to maximize and enhance the research and production phases of current and emerging chemical manufacturing practices and techniques. This collecting of information is of vital interest to chemical, polymer, electrical, mechanical, and civil engineers, as well as chemists and chemical researchers. A complete reconceptualization of the classic reference series the Encyclopedia of Chemical Processing and Design, whose first volume published in 1976, this resource offers extensive A-Z treatment of the subject in five simultaneously published volumes, with comprehensive indexing of all five volumes in the back matter of each tome. It includes material on the design of key unit operations involved with chemical processes; the design, unit operation, and integration of reactors and separation systems; process system peripherals such as pumps, valves, and controllers; analytical techniques and equipment; and pilot plant design and scale-up criteria. This reference contains well-researched sections on automation, equipment, design and simulation, reliability and maintenance, separations technologies, and energy and environmental issues. Authoritative contributions cover chemical processing equipment, engineered systems, and laboratory apparatus currently utilized in the field. It also presents expert overviews on key engineering science topics in property predictions, measurements and analysis, novel materials and devices, and emerging chemical fields. ALSO AVAILABLE ONLINE This Taylor & Francis encyclopedia is also available through online subscription, offering a variety of extra benefits for both researchers, students, and librarians, including: Citation tracking and alerts Active reference linking Saved searches and marked lists HTML and PDF format options Contact Taylor and Francis for more information or to inquire about subscription options and print/online combination packages. US: (Tel) 1.888.318.2367; (E-mail) [email protected] International: (Tel) +44 (0) 20 7017 6062; (E-mail) [email protected]