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Modeling And Simulation Of Reactive Flows

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Modeling and Simulation of Reactive Flows

Modeling and Simulation of Reactive Flows Book
Author : A.L. De Bortoli,Greice Andreis,Felipe Pereira
Publisher : Elsevier
Release : 2015-07-10
ISBN : 0128029919
Language : En, Es, Fr & De

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Book Description :

Modelling and Simulation of Reactive Flows presents information on modeling and how to numerically solve reactive flows. The book offers a distinctive approach that combines diffusion flames and geochemical flow problems, providing users with a comprehensive resource that bridges the gap for scientists, engineers, and the industry. Specifically, the book looks at the basic concepts related to reaction rates, chemical kinetics, and the development of reduced kinetic mechanisms. It considers the most common methods used in practical situations, along with equations for reactive flows, and various techniques—including flamelet, ILDM, and Redim—for jet flames and plumes, with solutions for both. In addition, the book includes techniques to accelerate the convergence of numerical simulation, and a discussion on the analysis of uncertainties with numerical results, making this a useful reference for anyone who is interested in both combustion in free flow and in porous media. Helps readers learn how to apply applications of numerical methods to simulate geochemical kinetics Presents methods on how to transform the transport equations in several coordinate systems Includes discussions of the basic concepts related to reaction rates, chemical kinetics, and the development of reduced kinetic mechanisms, including the most common methods used in practical situations Offers a distinctive approach that combines diffusion flames and geochemical flow problems

Reactive Flows Diffusion and Transport

Reactive Flows  Diffusion and Transport Book
Author : Willi Jäger,Rolf Rannacher,J. Warnatz
Publisher : Springer Science & Business Media
Release : 2007-05-31
ISBN : 354028396X
Language : En, Es, Fr & De

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Book Description :

The articles in this volume summarize the research results obtained in the former SFB 359 "Reactive Flow, Diffusion and Transport" which has been supported by the DFG over the period 1993-2004. The main subjects are physical-chemical processes sharing the difficulty of interacting diffusion, transport and reaction which cannot be considered separately. The modeling and simulation within this book is accompanied by experiments.

Chemically Reacting Flow

Chemically Reacting Flow Book
Author : Robert J. Kee,Michael E. Coltrin,Peter Glarborg,Huayang Zhu
Publisher : John Wiley & Sons
Release : 2017-09-27
ISBN : 1119186293
Language : En, Es, Fr & De

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Book Description :

A guide to the theoretical underpinnings and practical applications of chemically reacting flow Chemically Reacting Flow: Theory, Modeling, and Simulation, Second Edition combines fundamental concepts in fluid mechanics and physical chemistry while helping students and professionals to develop the analytical and simulation skills needed to solve real-world engineering problems. The authors clearly explain the theoretical and computational building blocks enabling readers to extend the approaches described to related or entirely new applications. New to this Second Edition are substantially revised and reorganized coverage of topics treated in the first edition. New material in the book includes two important areas of active research: reactive porous-media flows and electrochemical kinetics. These topics create bridges between traditional fluid-flow simulation approaches and transport within porous-media electrochemical systems. The first half of the book is devoted to multicomponent fluid-mechanical fundamentals. In the second half the authors provide the necessary fundamental background needed to couple reaction chemistry into complex reacting-flow models. Coverage of such topics is presented in self-contained chapters, allowing a great deal of flexibility in course curriculum design. • Features new chapters on reactive porous-media flow, electrochemistry, chemical thermodynamics, transport properties, and solving differential equations in MATLAB • Provides the theoretical underpinnings and practical applications of chemically reacting flow • Emphasizes fundamentals, allowing the analyst to understand fundamental theory underlying reacting-flow simulations • Helps readers to acquire greater facility in the derivation and solution of conservation equations in new or unusual circumstances • Reorganized to facilitate use as a class text and now including a solutions manual for academic adopters Computer simulation of reactive systems is highly efficient and cost-effective in the development, enhancement, and optimization of chemical processes. Chemically Reacting Flow: Theory, Modeling, and Simulation, Second Edition helps prepare graduate students in mechanical or chemical engineering, as well as research professionals in those fields take utmost advantage of that powerful capability.

Numerical Simulation of Reactive Flow

Numerical Simulation of Reactive Flow Book
Author : Elaine S. Oran,Jay P. Boris
Publisher : Cambridge University Press
Release : 2005-11-10
ISBN : 9780521022361
Language : En, Es, Fr & De

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Book Description :

Reactive flows encompass a broad range of physical phenomena, interacting over many different time and space scales. Such flows occur in combustion, chemical lasers, the earth's oceans and atmosphere, and in stars. Because of a similarity in their descriptive equations, procedures for constructing numerical models of these systems are also similar, and these similarities can be exploited. Moreover, using the latest technology, what were once difficult and expensive computations can now be done on desktop computers. This new edition of a highly successful book presents algorithms useful for reactive flow simulations, describes trade-offs involved in their use, and gives guidance for building and using models of complex reactive flows. It takes account of the explosive growth in computer technology and the greatly increased capacity for solving complex reactive-flow problems that has occurred since the previous edition was published more than fifteen years ago. An indispensable guide on how to construct, use, and interpret numerical simulations of reactive flows, this book will be welcomed by advanced undergraduate and graduate students, and a wide range of researchers and practitioners in engineering, physics, and chemistry.

Numerical Simulation of Reactive Flow

Numerical Simulation of Reactive Flow Book
Author : Elaine S. Oran,Jay P. Boris
Publisher : Cambridge University Press
Release : 2005-11-10
ISBN : 9780521022361
Language : En, Es, Fr & De

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Book Description :

Reactive flows encompass a broad range of physical phenomena, interacting over many different time and space scales. Such flows occur in combustion, chemical lasers, the earth's oceans and atmosphere, and in stars. Because of a similarity in their descriptive equations, procedures for constructing numerical models of these systems are also similar, and these similarities can be exploited. Moreover, using the latest technology, what were once difficult and expensive computations can now be done on desktop computers. This new edition of a highly successful book presents algorithms useful for reactive flow simulations, describes trade-offs involved in their use, and gives guidance for building and using models of complex reactive flows. It takes account of the explosive growth in computer technology and the greatly increased capacity for solving complex reactive-flow problems that has occurred since the previous edition was published more than fifteen years ago. An indispensable guide on how to construct, use, and interpret numerical simulations of reactive flows, this book will be welcomed by advanced undergraduate and graduate students, and a wide range of researchers and practitioners in engineering, physics, and chemistry.

Reactive Flows Diffusion and Transport

Reactive Flows  Diffusion and Transport Book
Author : Willi Jäger,Rolf Rannacher,J. Warnatz
Publisher : Springer
Release : 2006-10-16
ISBN : 9783540283799
Language : En, Es, Fr & De

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Book Description :

The articles in this volume summarize the research results obtained in the former SFB 359 "Reactive Flow, Diffusion and Transport" which has been supported by the DFG over the period 1993-2004. The main subjects are physical-chemical processes sharing the difficulty of interacting diffusion, transport and reaction which cannot be considered separately. The modeling and simulation within this book is accompanied by experiments.

Direct Numerical Simulation for Turbulent Reacting Flows

Direct Numerical Simulation for Turbulent Reacting Flows Book
Author : Thierry Baritaud,Thierry Poinsot,Markus Baum
Publisher : Editions TECHNIP
Release : 1996
ISBN : 9782710806981
Language : En, Es, Fr & De

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Book Description :

Contents: Description of accurate boundary conditions for the simulation of reactive flows. Parallel direct numerical simulation of turbulent reactive flow. Flame-wall interaction and heat flux modelling in turbulent channel flow. A numerical study of laminar flame wall interaction with detailed chemistry: wall temperature effects. Modeling and simulation of turbulent flame kernel evolution. Experimental and theoretical analysis of flame surface density modelling for premixed turbulent combustion. Gradient and counter-gradient transport in turbulent premixed flames. Direct numerical simulation of turbulent flames with complex chemical kinetics. Effects of curvature and unsteadiness in diffusion flames. Implications for turbulent diffusion combustion. Numerical simulations of autoignition in turbulent mixing flows. Stabilization processes of diffusion flames. References.

Mathematical Modeling of Separated Two phase Turbulent Reactive Flows Using a Filtered Mass Density Function Approach for Large Eddy Simulation

Mathematical Modeling of Separated Two phase Turbulent Reactive Flows Using a Filtered Mass Density Function Approach for Large Eddy Simulation Book
Author : Anonim
Publisher : Unknown
Release : 2006
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

The overall objective of this dissertation is the development of a modeling and simulation approach for turbulent two-phase chemically reacting flows. A new full velocity-scalar filtered mass density function (FMDF) formulation for large eddy simulation (LES) of a separated two-phase flow is developed. In this formulation several terms require modeling that include important conditionally averaged phase-coupling terms (PCT). To close the PCT a new derivation of the local instantaneous two-phase equations is presented and important identities are derived relating the PCT to surface averages. The formulation is then applied for two particle laden flow cases and solved using a full particle based Monte-Carlo numerical solution procedure. The first case is a temporally developing counter-current mixing layer dilutely seeded with evaporating water droplets. Validation studies reveal excellent agreement of the full particle method to previous hybrid FDF studies and direct numerical simulations for single-phase flows. One-way coupled simulations reveal that the overall dispersion is maximized with unity Stokes number droplets. Two-way coupled simulations reveal the advantages of two FDF approaches where the subgrid variation of droplet properties are explicitly taken into account. Comparisons of the fully-coupled FDF approach are compared to more approximate means of determining phase-coupling based on filtered properties and local and compounded global errors are assessed. The second case considered is the combustion aluminum particles. A new mechanistic model for the ignition and combustion of aluminum particulate is developed that accounts for unsteady heating, melting, heterogeneous surface reactions (HSR) and quasi-steady burning. Results of this model agree well with experimental data for overall burn rates and ignition times. Two-phase simulations of aluminum particulate seeded mixing layer reveal the variations in flame radius resulting in local extinguishment from SGS variations in gas oxidizer.

Bridging Scales in Modelling and Simulation of Non Reacting and Reacting Flows

Bridging Scales in Modelling and Simulation of Non Reacting and Reacting Flows Book
Author : Juray De Wilde
Publisher : Academic Press
Release : 2018-04
ISBN : 9780128150962
Language : En, Es, Fr & De

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Book Description :

The multi-scale nature of reacting flows makes their simulation particularly challenging. In the different chapters of this volume, key methods are presented which allow bridging scales and running simulations more efficiently without significant loss of accuracy. This volume focuses on single phase flow applications. The scope of the volume is to present key methods to bridge scales in the simulation of reacting single phase flows. Both an academic and industrial audience is expected, the latter having a particular interest in the simulation of industrial scale devices. Grouping key methods to bridge scales in the simulation of reacting flows looking at the different aspects of such flows (transport phenomena, reactions). Illustration of the methods on a variety of applications and contribution of key groups in this field. Contains reviews by leading authorities in their respective areas Presents up-to-date reviews of the latest techniques in the modeling of catalytic processes Includes a broad mix of US and European authors, as well as academic, industrial, and research institute perspectives Provides discussions on the connections between computation and experimental methods

Bridging Scales in Modelling and Simulation of Non Reacting and Reacting Flows

Bridging Scales in Modelling and Simulation of Non Reacting and Reacting Flows Book
Author : Anonim
Publisher : Academic Press
Release : 2018-03-27
ISBN : 0128150971
Language : En, Es, Fr & De

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Book Description :

Bridging Scales in Modelling and Simulating Reacting Flows, Part I , Volume 52 presents key methods to bridge scales in the simulation of reacting single phase flows. New sections in the updated release include topics such as quadrature-based moment methods for multiphase chemically reacting flows, the collaboration of experiments and simulations for the development of predictive models, a simulation of turbulent coalescence and breakage of bubbles and droplets in the presence of surfactants, a section on salts and contaminants, and information on the numerical simulation of reactive flows. Contains reviews by leading authorities in their respective areas Presents up-to-date reviews of the latest techniques in the modeling of catalytic processes Includes a broad mix of US and European authors, as well as academic, industrial and research institute perspectives Provides discussions on the connections between computational and experimental methods

Modeling and Simulation of Thermal Ignition Flame Fronts Reactive Flows and Transonic Combustion

Modeling and Simulation of Thermal Ignition  Flame Fronts  Reactive Flows and Transonic Combustion Book
Author : William E. Tavernetti
Publisher : Unknown
Release : 2014
ISBN : 9781321610017
Language : En, Es, Fr & De

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Book Description :

Nonlinear dynamical phenomena in combustion processes is an active area of experimental and theoretical research. This is in large part due to increasingly strict environmental pressures to make gas turbine engines and industrial burners more efficient. For prospects as a field of study, the problem is a highly diverse subset of applied mechanics which appeals to a wide variety of investigators in engineering, applied sciences, mathematics and even, for example, in life sciences applications, such as biochemistry. This dissertation studies several interrelated problems with a focus on modeling implications in this complicated nonlinear framework. The main topics are (1) numerical solutions of reaction-diffusion equations of the thermal ignition problem and flame front models, (2) reactive axisymmetric swirling viscous flow leading to enhanced mixing with vortex breakdown, and (3) transonic and supersonic reactive inviscid flows with shocks. Results, details of the numerical algorithms, as well as numerical verification techniques and validation with sources from the literature will be presented. With respect to the thermal ignition theory, issues related to bifurcations, oscillations and chaotic dynamics are considered. Numerical treatment of the thermal ignition problem when the Lewis number is not equal to one is also studied, and robust numerical methods for the stiff, nonlinear reaction-diffusion problems are implemented. Solutions which can be used coupled to fluid flow in an axisymmetric geometry are also considered. Some approaches in flame theory and their dynamical properties, as well as numerical and physical extensions are examined. For reactive axisymmetric swirling flow, the main study is of flows with vortex breakdown which leads to enhanced mixing. Several incompressible and compressible problems are first studied in a related framework with and without combustion. Incompressible swirling flow in terms of stream function, vorticity, and circulation is considered, along with non-isothermal swirling flow. A model is developed for reactive swirling compressible flow assuming constant pressure. Next, a model is developed for premixed reactive swirling flow via Boussinesq approximation. Finally, a compressible, reactive, swirling flow model is developed for a perfect gas and used to investigate cases with vortex breakdown. With respect to transonic reactive nozzle flows, a small disturbance combustion model is studied first. This small disturbance model is then extended to an unsteady full potential model. An alternate formulation of the Euler Equations that can be used to extend the unsteady reactive potential flow model is considered. In addition, a simple upwind scheme for computation of transonic flows is presented and studied with example problems in one and two dimensions, as well as flows with heat and friction. Finally, detonation theory, including friction, is studied. In the final chapter, future work and extensions for the three parts of the dissertation: solutions of reaction diffusion equations, combustion in low speed (compressible and incompressible) viscous flows with swirling, and combustion in high speed (transonic and supersonic) inviscid flows with shock waves, are discussed.

Modeling and Simulation of Turbulent Combustion

Modeling and Simulation of Turbulent Combustion Book
Author : Santanu De,Avinash Kumar Agarwal,Swetaprovo Chaudhuri,Swarnendu Sen
Publisher : Springer
Release : 2017-12-12
ISBN : 9811074100
Language : En, Es, Fr & De

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Book Description :

This book presents a comprehensive review of state-of-the-art models for turbulent combustion, with special emphasis on the theory, development and applications of combustion models in practical combustion systems. It simplifies the complex multi-scale and nonlinear interaction between chemistry and turbulence to allow a broader audience to understand the modeling and numerical simulations of turbulent combustion, which remains at the forefront of research due to its industrial relevance. Further, the book provides a holistic view by covering a diverse range of basic and advanced topics—from the fundamentals of turbulence–chemistry interactions, role of high-performance computing in combustion simulations, and optimization and reduction techniques for chemical kinetics, to state-of-the-art modeling strategies for turbulent premixed and nonpremixed combustion and their applications in engineering contexts.

Modeling and Simulation of Reacting Flows in Lean premixed Swirl stabilized Gas Turbine Combustor

Modeling and Simulation of Reacting Flows in Lean premixed Swirl stabilized Gas Turbine Combustor Book
Author : Anonim
Publisher : Unknown
Release : 2005
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Combustion in a lean pre-mixed (LPM) combustor may become unstable due to small changes in geometry and the manner in which reactants are introduced. This may lead to excessive thermal loads and possible off-design operation. A comprehensive understanding of combustion instability is therefore needed. The present study aims to analyze the flow and flame dynamics in a model LPM gas turbine combustor in LPM combustion. Fluent is used as the flow solver for the present study. The 3-D Navier-Stokes equations are solved along with finite-rate chemical reaction equations and variable thermo-physical properties. Large-eddy-simulation (LES) technique is used to model turbulence. The dynamic version of the Smagorinsky-Lilly model is employed to describe subgrid-scale turbulent motions and their effect on large-scale structures. At first a non-reactive LES was performed in model round and LM6000 combustor. The results for time averaged mean velocity are compared with the previous LES work by Grinstein et al. and Kim et al. Using non-reacting case for LM6000, reactive simulation was initiated, with lean methane-air mixture with equivalence ratio 0.56. Species transport equation is solved for global methane-air two-step reaction with six volumetric species to predict the local mass fraction of each species. The reaction rates that appear as source terms in the species transport equation are computed using finite-rate/eddy-dissipation model, which computes both, the Arrhenius rate and the mixing rate and uses the smaller of the two. It is observed that as the flow enters the chamber, it bifurcates in two shear layers forming a prong like structure. The layers further tend to reattach to the wall at a distance approximately equal to 3D. Counter-clockwise recirculation zones are formed in the corners, whereas clock-wise toroidal vortex structure is formed in the center. The flame is located in between these vortex structures and thus experiences shear-layer instabilities. It is also noticed that the eddy structure in case of reacting case is thicker than that of the non-reacting case. This is mainly due to the temperature dependent viscosity, which has a stabilizing effect on the flow.

Chemical Reactor Modeling

Chemical Reactor Modeling Book
Author : Hugo A. Jakobsen
Publisher : Springer Science & Business Media
Release : 2014-04-02
ISBN : 3319050923
Language : En, Es, Fr & De

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Book Description :

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.

Numerical Simulation of Reactive Flow in Hot Aquifers

Numerical Simulation of Reactive Flow in Hot Aquifers Book
Author : Christoph Clauser
Publisher : Springer Science & Business Media
Release : 2012-12-06
ISBN : 3642556841
Language : En, Es, Fr & De

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Book Description :

This product, consisting of a CD-ROM and a book, deals with the numerical simulation of reactive transport in porous media using the simulation package SHEMAT/Processing SHEMAT. SHEMAT (Simulator for HEat and MAss Transport) is an easy-to-use, general-purpose reactive transport simulation code for a wide variety of thermal and hydrogeological problems in two or three dimensions. The book is a richly documented manual for users of this software which discusses in detail the coded physical and chemical equations. Thus, it provides the in-depth background required by those who want to apply the code for solving advanced technical and scientific problems. The enclosed companion CD-ROM contains the software and data for all of the case studies. The software includes user-friendly pre- and post-processors which make it very easy to set up a model, run it and view the results, all from one platform. Therefore, the software is also very suitable for academic or technical "hands-on" courses for simulating flow, transport of heat and mass, and chemical reactions in porous media. You can find a link to the updated software on springer.com .

Numerical Simulation of Reactive Flow in Hot Aquifers

Numerical Simulation of Reactive Flow in Hot Aquifers Book
Author : Christoph Clauser,Jörn Bartels
Publisher : Springer Science & Business Media
Release : 2003
ISBN : 9783540438687
Language : En, Es, Fr & De

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Book Description :

This book deals with the numerical simulation of reactive transport in porous media using the simulation package SHEMAT/Processing SHEMAT. SHEMAT (Simulator for HEat and MAss Transport) is an easy-to-use, general-purpose reactive transport simulation code for a wide variety of thermal and hydrogeological problems in two or three dimensions. You can download the updated version of the SHEMAT software from our Springer-Extras server: http://extras.springer.com/2003/978-3-540-43868-7. The book is a richly documented manual for users of this software which discusses in detail the coded physical and chemical equations. Thus, it provides the in-depth background required by those who want to apply the code for solving advanced technical and scientific problems. The enclosed software and data package is applicable for all of the case studies. The software includes user-friendly pre- and post-processors which make it very easy to set up a model, run it and view the results, all from one platform. Therefore, the software is also very suitable for academic or technical "hands-on" courses for simulating flow, transport of heat and mass, and chemical reactions in porous media.

Modeling and Simulation of Turbulent Mixing and Reaction

Modeling and Simulation of Turbulent Mixing and Reaction Book
Author : Daniel Livescu,Arash G. Nouri,Francine Battaglia,Peyman Givi
Publisher : Springer Nature
Release : 2020-02-19
ISBN : 9811526435
Language : En, Es, Fr & De

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Book Description :

This book highlights recent research advances in the area of turbulent flows from both industry and academia for applications in the area of Aerospace and Mechanical engineering. Contributions include modeling, simulations and experiments meant for researchers, professionals and students in the area.

Modeling and Simulation in Engineering Sciences

Modeling and Simulation in Engineering Sciences Book
Author : Noreen Sher Akbar,Anwar Beg
Publisher : BoD – Books on Demand
Release : 2016-08-31
ISBN : 9535126083
Language : En, Es, Fr & De

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Book Description :

This book features state-of-the-art contributions in mathematical, experimental and numerical simulations in engineering sciences. The contributions in this book, which comprise twelve chapters, are organized in six sections spanning mechanical, aerospace, electrical, electronic, computer, materials, geotechnical and chemical engineering. Topics include metal micro-forming, compressible reactive flows, radio frequency circuits, barrier infrared detectors, fiber Bragg and long-period fiber gratings, semiconductor modelling, many-core architecture computers, laser processing of materials, alloy phase decomposition, nanofluids, geo-materials and rheo-kinetics. Contributors are from Europe, China, Mexico, Malaysia and Iran. The chapters feature many sophisticated approaches including Monte Carlo simulation, FLUENT and ABAQUS computational modelling, discrete element modelling and partitioned frequency-time methods. The book will be of interest to researchers and also consultants engaged in many areas of engineering simulation.

Near wall Subgrid Scale Modeling for Large Eddy Simulation of Turbulent Buoyancy Driven Non reactive and Reactive Flows Using One dimensional Turbulence

Near wall Subgrid Scale Modeling for Large Eddy Simulation of Turbulent Buoyancy Driven Non reactive and Reactive Flows Using One dimensional Turbulence Book
Author : Anonim
Publisher : Unknown
Release : 2007
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

The overall objective of this dissertation is the development of a near-wall modeling and simulation approach for turbulent non-reacting and reacting buoyancy driven flows. The thrust of this effort is two fold. The first is on the development of an advanced near-wall stand-alone model using One Dimensional Model (ODT) of Kerstein to account for the non-linear interactions of turbulent convective, radiation and diffusion processes. Both non-reacting and reacting cases are studied and the results are compared to the experimental data. Overall excellent agreement of simulation results to experimental data and to established inner and outer scaling laws for buoyancy driven boundary layers is obtained. A new buoyancy generation production term is proposed in this formulation for ODT which is based on the vorticity transport scaling arguments to account for the generation of large scale eddy mixing events. For reactive flow cases, a new scaling theory is developed based on similitude analysis. The total mass flux of mixture fraction is identified as a fundamental scaling parameter. The verification of these scaling parameters was done using ODT predictions. The second focus of this effort is on the exploration of the ODT as an advanced near-wall sub grid scale (SGS) model for large eddy simulation (LES). The turbulence stresses for the LES grid are computed from the evolving near-wall ODT field whereas the ODT instantaneous velocity and scalar field is obtained from the interpolation of LES field. Results are presented for the evolution of a non-reacting boundary layer. Heat flux on the wall and the other flow field variables including temperature and velocities indicating that an overall better agreement for LES-ODT coupled simulation is obtained than an LES solution of similar grid resolution when comparing both to the Direct Numerical Simulation (DNS).

Computational Flow Modeling for Chemical Reactor Engineering

Computational Flow Modeling for Chemical Reactor Engineering Book
Author : Vivek V. Ranade
Publisher : Academic Press
Release : 2002
ISBN : 0125769601
Language : En, Es, Fr & De

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Book Description :

This book describes how modeling fluid flow in chemical reactors may offer solutions that improve design, operation, and performance of reactors. Chemical reactors are any vessels, tubes, pipes, or tanks in which chemical reactions take place. Computational Flow Modeling for Chemical Reactor Engineering will show the reactor engineer how to define the specific roles of computational flow modeling, select appropriate tools, and apply these tools to link reactor hardware to reactor performance. Overall methodology is illustrated with numerous case studies. Industry has invested substantial funds in computational flow modeling which will pay off only if it can be used to realize significant performance enhancement in chemical reactors. No other single source exists which provides the information contained in this book.