Stabilization and Dynamic of Premixed Swirling Flames

Stabilization and Dynamic of Premixed Swirling Flames
Author: Paul Palies
Publsiher: Academic Press
Total Pages: 400
Release: 2020-07-03
ISBN 10: 0128199970
ISBN 13: 9780128199978
Language: EN, FR, DE, ES & NL

Stabilization and Dynamic of Premixed Swirling Flames Book Review:

Stabilization and Dynamic of Premixed Swirling Flames: Prevaporized, Stratified, Partially, and Fully Premixed Regimes focuses on swirling flames in various premixed modes (stratified, partially, fully, prevaporized) for the combustor, and development and design of current and future swirl-stabilized combustion systems. This includes predicting capabilities, modeling of turbulent combustion, liquid fuel modeling, and a complete overview of stabilization of these flames in aeroengines. The book also discusses the effects of the operating envelope on upstream fresh gases and the subsequent impact of flame speed, combustion, and mixing, the theoretical framework for flame stabilization, and fully lean premixed injector design. Specific attention is paid to ground gas turbine applications, and a comprehensive review of stabilization mechanisms for premixed, partially-premixed, and stratified premixed flames. The last chapter covers the design of a fully premixed injector for future jet engine applications. Features a complete view of the challenges at the intersection of swirling flame combustors, their requirements, and the physics of fluids at work Addresses the challenges of turbulent combustion modeling with numerical simulations Includes the presentation of the very latest numerical results and analyses of flashback, lean blowout, and combustion instabilities Covers the design of a fully premixed injector for future jet engine applications

Stabilization and Dynamic of Premixed Swirling Flames

Stabilization and Dynamic of Premixed Swirling Flames
Author: Paul Palies
Publsiher: Academic Press
Total Pages: 600
Release: 2020-08-17
ISBN 10: 0128199962
ISBN 13: 9780128199961
Language: EN, FR, DE, ES & NL

Stabilization and Dynamic of Premixed Swirling Flames Book Review:

Stabilization and Dynamic of Premixed Swirling Flames: Prevaporized, Stratified, Partially, and Fully Premixed Regimes focuses on swirling flames in various premixed modes (stratified, partially, fully, prevaporized) for the combustor, and development and design of current and future swirl-stabilized combustion systems. This includes predicting capabilities, modeling of turbulent combustion, liquid fuel modeling, and a complete overview of stabilization of these flames in aeroengines. The book also discusses the effects of the operating envelope on upstream fresh gases and the subsequent impact of flame speed, combustion, and mixing, the theoretical framework for flame stabilization, and fully lean premixed injector design. Specific attention is paid to ground gas turbine applications, and a comprehensive review of stabilization mechanisms for premixed, partially-premixed, and stratified premixed flames. The last chapter covers the design of a fully premixed injector for future jet engine applications. Features a complete view of the challenges at the intersection of swirling flame combustors, their requirements, and the physics of fluids at work Addresses the challenges of turbulent combustion modeling with numerical simulations Includes the presentation of the very latest numerical results and analyses of flashback, lean blowout, and combustion instabilities Covers the design of a fully premixed injector for future jet engine applications

Swirl stabilized Lean premixed Flame Combustion Dynamics An Experimental Investigation of Flame Stabilization Flame Dynamics and Combustion Instability Control Strategies

Swirl stabilized Lean premixed Flame Combustion Dynamics  An Experimental Investigation of Flame Stabilization  Flame Dynamics and Combustion Instability Control Strategies
Author: Rajavasanth Rajasegar
Publsiher: Anonim
Total Pages: 329
Release: 2018
ISBN 10:
ISBN 13: OCLC:1084742595
Language: EN, FR, DE, ES & NL

Swirl stabilized Lean premixed Flame Combustion Dynamics An Experimental Investigation of Flame Stabilization Flame Dynamics and Combustion Instability Control Strategies Book Review:

Unsteady Combustor Physics

Unsteady Combustor Physics
Author: Tim C. Lieuwen
Publsiher: Cambridge University Press
Total Pages: 329
Release: 2012-08-27
ISBN 10: 1139576836
ISBN 13: 9781139576833
Language: EN, FR, DE, ES & NL

Unsteady Combustor Physics Book Review:

Developing clean, sustainable energy systems is a pre-eminent issue of our time. Most projections indicate that combustion-based energy conversion systems will continue to be the predominant approach for the majority of our energy usage. Unsteady combustor issues present the key challenge associated with the development of clean, high-efficiency combustion systems such as those used for power generation, heating or propulsion applications. This comprehensive study is unique, treating the subject in a systematic manner. Although this book focuses on unsteady combusting flows, it places particular emphasis on the system dynamics that occur at the intersection of the combustion, fluid mechanics and acoustic disciplines. Individuals with a background in fluid mechanics and combustion will find this book to be an incomparable study that synthesises these fields into a coherent understanding of the intrinsically unsteady processes in combustors.

Combustion Instabilities in Gas Turbine Engines

Combustion Instabilities in Gas Turbine Engines
Author: Timothy C. Lieuwen,Vigor Yang
Publsiher: Progress in Astronautics and A
Total Pages: 657
Release: 2005
ISBN 10:
ISBN 13: UOM:39015062471126
Language: EN, FR, DE, ES & NL

Combustion Instabilities in Gas Turbine Engines Book Review:

This book offers gas turbine users and manufacturers a valuable resource to help them sort through issues associated with combustion instabilities. In the last ten years, substantial efforts have been made in the industrial, governmental, and academic communities to understand the unique issues associated with combustion instabilities in low-emission gas turbines. The objective of this book is to compile these results into a series of chapters that address the various facets of the problem. The Case Studies section speaks to specific manufacturer and user experiences with combustion instabilities in the development stage and in fielded turbine engines. The book then goes on to examine The Fundamental Mechanisms, The Combustor Modeling, and Control Approaches.

Coarse Grained Simulation and Turbulent Mixing

Coarse Grained Simulation and Turbulent Mixing
Author: Fernando F. Grinstein
Publsiher: Cambridge University Press
Total Pages: 516
Release: 2016-05-31
ISBN 10: 1107137047
ISBN 13: 9781107137042
Language: EN, FR, DE, ES & NL

Coarse Grained Simulation and Turbulent Mixing Book Review:

Reviews our current understanding of the subject. For graduate students and researchers in computational fluid dynamics and turbulence.

Combustion Noise

Combustion Noise
Author: Anna Schwarz,Johannes Janicka
Publsiher: Springer Science & Business Media
Total Pages: 291
Release: 2009-06-17
ISBN 10: 3642020380
ISBN 13: 9783642020384
Language: EN, FR, DE, ES & NL

Combustion Noise Book Review:

November, 2008 Anna Schwarz, Johannes Janicka In the last thirty years noise emission has developed into a topic of increasing importance to society and economy. In ?elds such as air, road and rail traf?c, the control of noise emissions and development of associated noise-reduction techno- gies is a central requirement for social acceptance and economical competitiveness. The noise emission of combustion systems is a major part of the task of noise - duction. The following aspects motivate research: • Modern combustion chambers in technical combustion systems with low pol- tion exhausts are 5 - 8 dB louder compared to their predecessors. In the ope- tional state the noise pressure levels achieved can even be 10-15 dB louder. • High capacity torches in the chemical industry are usually placed at ground level because of the reasons of noise emissions instead of being placed at a height suitable for safety and security. • For airplanes the combustion emissions become a more and more important topic. The combustion instability and noise issues are one major obstacle for the introduction of green technologies as lean fuel combustion and premixed burners in aero-engines. The direct and indirect contribution of combustion noise to the overall core noise is still under discussion. However, it is clear that the core noise besides the fan tone will become an important noise source in future aero-engine designs. To further reduce the jet noise, geared ultra high bypass ratio fans are driven by only a few highly loaded turbine stages.

Microfluidics and Nanofluidics

Microfluidics and Nanofluidics
Author: Mohsen Sheikholeslami Kandelousi
Publsiher: BoD – Books on Demand
Total Pages: 318
Release: 2018-08-22
ISBN 10: 1789235405
ISBN 13: 9781789235401
Language: EN, FR, DE, ES & NL

Microfluidics and Nanofluidics Book Review:

In the present book, various applications of microfluidics and nanofluidics are introduced. Microfluidics and nanofluidics span a broad array of disciplines including mechanical, materials, and electrical engineering, surface science, chemistry, physics and biology. Also, this book deals with transport and interactions of colloidal particles and biomolecules in microchannels, which have great importance to many microfluidic applications, such as drug delivery in life science, microchannel heat exchangers in electronic cooling, and food processing industry. Furthermore, this book focuses on a detailed description of the thermal transport behavior, challenges and implications that involve the development and use of HTFs under the influence of atomistic-scale structures and industrial applications.

Swirl Flows

Swirl Flows
Author: Ashwani K. Gupta,D. G. Lilley,Nick Syred
Publsiher: Routledge
Total Pages: 475
Release: 1984
ISBN 10:
ISBN 13: UOM:39015013066611
Language: EN, FR, DE, ES & NL

Swirl Flows Book Review:

Laser Diagnostics for Combustion Temperature and Species

Laser Diagnostics for Combustion Temperature and Species
Author: Alan C. Eckbreth
Publsiher: CRC Press
Total Pages: 630
Release: 1996-10-10
ISBN 10: 9789056995324
ISBN 13: 9056995324
Language: EN, FR, DE, ES & NL

Laser Diagnostics for Combustion Temperature and Species Book Review:

This book examines the variety of potential laser diagnostic techniques and presents a considerable theoretical foundation elucidating physics relevant to the laser diagnostics. It explains the Raman-based approaches for major species and temperature measurements.

A Gallery of Combustion and Fire

A Gallery of Combustion and Fire
Author: Charles Baukal, Jr.
Publsiher: Cambridge University Press
Total Pages: 329
Release: 2020-05-31
ISBN 10: 1108660886
ISBN 13: 9781108660884
Language: EN, FR, DE, ES & NL

A Gallery of Combustion and Fire Book Review:

A Gallery of Combustion and Fire is the first book to provide a graphical perspective of the extremely visual phenomenon of combustion in full color. It is designed primarily to be used in parallel with, and supplement existing combustion textbooks that are usually in black and white, making it a challenge to visualize such a graphic phenomenon. Each image includes a description of how it was generated, which is detailed enough for the expert but simple enough for the novice. Processes range from small scale academic flames up to full scale industrial flames under a wide range of conditions such as low and normal gravity, atmospheric to high pressures, actual and simulated flames, and controlled and uncontrolled flames. Containing over 500 color images, with over 230 contributors from over 75 organizations, this volume is a valuable asset for experts and novices alike.

Unsteady Combustion

Unsteady Combustion
Author: F. Culick,M.V. Heitor,J.H. Whitelaw
Publsiher: Springer Science & Business Media
Total Pages: 562
Release: 2012-12-06
ISBN 10: 9400916205
ISBN 13: 9789400916203
Language: EN, FR, DE, ES & NL

Unsteady Combustion Book Review:

This book contains selected papers prepared for the NATO Advanced Study Institute on "Unsteady Combustion", which was held in Praia da Granja, Portugal, 6-17 September 1993. Approximately 100 delegates from 14 countries attended. The Institute was the most recent in a series beginning with "Instrumentation for Combustion and Flow in Engines", held in Vimeiro, Portugal 1987 and followed by "Combusting Flow Diagnostics" conducted in Montechoro, Portugal in 1990. Together, these three Institutes have covered a wide range of experimental and theoretical topics arising in the research and development of combustion systems with particular emphasis on gas-turbine combustors and internal combustion engines. The emphasis has evolved roughly from instrumentation and experimental techniques to the mixture of experiment, theory and computational work covered in the present volume. As the title of this book implies, the chief aim of this Institute was to provide a broad sampling of problems arising with time-dependent behaviour in combustors. In fact, of course, that intention encompasses practically all possibilities, for "steady" combustion hardly exists if one looks sufficiently closely at the processes in a combustion chamber. The point really is that, apart from the excellent paper by Bahr (Chapter 10) discussing the technology of combustors for aircraft gas turbines, little attention is directed to matters of steady performance. The volume is divided into three parts devoted to the subjects of combustion-induced oscillations; combustion in internal combustion engines; and experimental techniques and modelling.

Forced Response of Swirl Stabilized Flames in Hydrogen Enriched Gas Turbines

Forced Response of Swirl Stabilized Flames in Hydrogen Enriched Gas Turbines
Author: Kyu Tae Kim
Publsiher: Anonim
Total Pages: 329
Release: 2009
ISBN 10:
ISBN 13: OCLC:500700152
Language: EN, FR, DE, ES & NL

Forced Response of Swirl Stabilized Flames in Hydrogen Enriched Gas Turbines Book Review:

The forced response of swirl-stabilized lean-premixed turbulent flames to inlet velocity and/or equivalence ratio oscillations in hydrogen enriched laboratory-scale gas turbine combustors was experimentally investigated. To characterize the response of premixed and partially premixed flames, several measurement techniques were used. Inlet velocity and equivalence ratio fluctuations were measured by the two-microphone method and the infrared absorption technique, respectively. Global heat release oscillations were determined by measuring naturally occurring flame chemiluminescence emissions using photomultiplier tubes. Steady-state flame structure and phase-resolved flame dynamics were characterized by CH* chemiluminescence imaging using an intensified CCD camera. Results show that the response of a premixed flame to inlet velocity oscillations is strongly dependent on the effective flame length. This extends previous experimental and analytical results from laminar to turbulent premixed flames. The nonlinear response of the flame is manifested by shear layer rollup and unsteady flame liftoff, depending on the amplitude of perturbations. The response of hydrogen-enriched flames is linear, irrespective of vortex shedding. The forced response of a flame to equivalence ratio oscillations alone was achieved by using a fuel modulation method. When the flame is perturbed by mixture ratio modulations, it shows both linear and nonlinear responses. The nonlinearity is associated with the intrinsically nonlinear dependence of burning velocity and equivalence ratio upon the heat release. Finally, the response of a partially premixed flame to perturbations of both inlet velocity and equivalence ratio was studied. Unsteady local extinction events were identified as a mechanism of nonlinearity, which results from flame stretching effects. In particular, unsteady local extinction is more obvious in the nonlinear dynamics of hydrogen enriched partially premixed flames. The phase difference between inlet velocity and equivalence ratio nonuniformities is a key parameter controlling the linear and nonlinear response of a partially premixed flame. Results also show that in the linear regime, the response of a partially premixed flame can be reconstructed using the responses of a flame to velocity and equivalence ratio, using a vector summation rule.

Approaches for Clean Combustion in Gas Turbines

Approaches for Clean Combustion in Gas Turbines
Author: Medhat A. Nemitallah,Ahmed A. Abdelhafez,Mohamed A. Habib
Publsiher: Springer Nature
Total Pages: 417
Release: 2020-03-24
ISBN 10: 303044077X
ISBN 13: 9783030440770
Language: EN, FR, DE, ES & NL

Approaches for Clean Combustion in Gas Turbines Book Review:

This book focuses on the development of novel combustion approaches and burner designs for clean power generation in gas turbines. It shows the reader how to control the release of pollutants to the environment in an effort to reduce global warming. After an introduction to global warming issues and clean power production for gas turbine applications, subsequent chapters address premixed combustion, burner designs for clean power generation, gas turbine performance, and insights on gas turbine operability. Given its scope, the book can be used as a textbook for graduate-level courses on clean combustion, or as a reference book to accompany compact courses for mechanical engineers and young researchers around the world.

Turbulent Premixed Flames

Turbulent Premixed Flames
Author: Nedunchezhian Swaminathan,K. N. C. Bray
Publsiher: Cambridge University Press
Total Pages: 329
Release: 2011-04-25
ISBN 10: 1139498584
ISBN 13: 9781139498586
Language: EN, FR, DE, ES & NL

Turbulent Premixed Flames Book Review:

A work on turbulent premixed combustion is timely because of increased concern about the environmental impact of combustion and the search for new combustion concepts and technologies. An improved understanding of lean fuel turbulent premixed flames must play a central role in the fundamental science of these new concepts. Lean premixed flames have the potential to offer ultra-low emission levels, but they are notoriously susceptible to combustion oscillations. Thus, sophisticated control measures are inevitably required. The editors' intent is to set out the modeling aspects in the field of turbulent premixed combustion. Good progress has been made recently on this topic. Thus, it is timely to edit a cohesive volume containing contributions from international experts on various subtopics of the lean premixed flame problem.

Swirling Flows and Flames

Swirling Flows and Flames
Author: Toufik Boushaki
Publsiher: BoD – Books on Demand
Total Pages: 118
Release: 2019-06-26
ISBN 10: 1838807438
ISBN 13: 9781838807436
Language: EN, FR, DE, ES & NL

Swirling Flows and Flames Book Review:

Swirl flows are used in a wide range of industrial applications. In non-reacting cases, examples of applications include vortex amplifiers and reactors, heat exchangers, jet pumps, and cyclone separators. In reacting cases, swirlers are widely used in combustion systems, such as gas turbines, industrial furnaces, boilers, gasoline and diesel engines, and many other practical heating devices. Effects of using swirl on flow and combustion are significant and varied, and concern, for example, aerodynamics, mixing, flame stability, intensity of combustion, and pollutant emissions. The purpose of this book is to present recent research efforts to understand and characterize swirling flows of different types and in different applications. These include gaseous, liquid, and solid fuels in order to enhance combustion systems and their energy efficiency. Swirl flows are very complex and the studies proposed in this project are based on different means, including theoretical calculations, numerical modeling, and experimental measurements.

Oxyfuel Combustion for Clean Energy Applications

Oxyfuel Combustion for Clean Energy Applications
Author: Medhat A. Nemitallah,Mohamed A. Habib,Hassan M. Badr
Publsiher: Springer
Total Pages: 368
Release: 2019-02-11
ISBN 10: 3030105881
ISBN 13: 9783030105884
Language: EN, FR, DE, ES & NL

Oxyfuel Combustion for Clean Energy Applications Book Review:

This book aims to be the reference book in the area of oxyfuel combustion, covering the fundamentals, design considerations and current challenges in the field. Its first part provides an overview of the greenhouse gas emission problem and the current carbon capture and sequestration technologies. The second part introduces oxy-fuel combustion technologies with emphasis on system efficiency, combustion and emission characteristics, applications and related challenges. The third part focuses on the recent developments in ion transport membranes and their performance in both oxygen separation units and oxygen transport reactors (OTRs). The fourth part presents novel approaches for clean combustion in gas turbines and boilers. Computational modelling and optimization of combustion in gas turbine combustors and boiler furnaces are presented in the fifth part with some numerical results and detailed analyses.

Turbulent Combustion Modeling

Turbulent Combustion Modeling
Author: Tarek Echekki,Epaminondas Mastorakos
Publsiher: Springer Science & Business Media
Total Pages: 490
Release: 2010-12-25
ISBN 10: 9789400704121
ISBN 13: 9400704127
Language: EN, FR, DE, ES & NL

Turbulent Combustion Modeling Book Review:

Turbulent combustion sits at the interface of two important nonlinear, multiscale phenomena: chemistry and turbulence. Its study is extremely timely in view of the need to develop new combustion technologies in order to address challenges associated with climate change, energy source uncertainty, and air pollution. Despite the fact that modeling of turbulent combustion is a subject that has been researched for a number of years, its complexity implies that key issues are still eluding, and a theoretical description that is accurate enough to make turbulent combustion models rigorous and quantitative for industrial use is still lacking. In this book, prominent experts review most of the available approaches in modeling turbulent combustion, with particular focus on the exploding increase in computational resources that has allowed the simulation of increasingly detailed phenomena. The relevant algorithms are presented, the theoretical methods are explained, and various application examples are given. The book is intended for a relatively broad audience, including seasoned researchers and graduate students in engineering, applied mathematics and computational science, engine designers and computational fluid dynamics (CFD) practitioners, scientists at funding agencies, and anyone wishing to understand the state-of-the-art and the future directions of this scientifically challenging and practically important field.

Theoretical and Numerical Combustion

Theoretical and Numerical Combustion
Author: Thierry Poinsot,Denis Veynante
Publsiher: R.T. Edwards, Inc.
Total Pages: 522
Release: 2005
ISBN 10: 9781930217102
ISBN 13: 1930217102
Language: EN, FR, DE, ES & NL

Theoretical and Numerical Combustion Book Review:

Introducing numerical techniques for combustion, this textbook describes both laminar and turbulent flames, addresses the problem of flame-wall interaction, and presents a series of theoretical tools used to study the coupling phenomena between combustion and acoustics. The second edition incorporates recent advances in unsteady simulation methods,

Dynamics of Nanoparticles in Stagnation Flames

Dynamics of Nanoparticles in Stagnation Flames
Author: Yiyang Zhang
Publsiher: Springer
Total Pages: 183
Release: 2017-03-20
ISBN 10: 3662536153
ISBN 13: 9783662536155
Language: EN, FR, DE, ES & NL

Dynamics of Nanoparticles in Stagnation Flames Book Review:

This book studies the collision, coalescence and deposition of nanoparticles in stagnation flames. With the help of synthesis experiments, in-situ laser diagnostics and molecular dynamics simulations, it investigates the growth of nanoparticles in flames and their deposition in boundary layers at a macroscopic flow field scale, as well as particle and molecular scale issues such as the interaction force between particles, how the collision rate is enhanced by attractive forces, and how the nano-scale coalescence process is influenced by the high surface curvature – all of which are crucial to understanding nanoparticle transport phenomena at high temperatures. The book also reports on a novel in-situ laser diagnostics phenomenon called phase-selective laser-induced breakdown spectroscopy and related applications for tracing gas-to-particle transitions and measuring local particle volume fractions in nano-aerosols.