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

Combustion Dynamics and Fluid Mechanics in Acoustically Perturbed Non premixed Swirl stabilized Flames

Combustion Dynamics and Fluid Mechanics in Acoustically Perturbed Non premixed Swirl stabilized Flames
Author: Uyi O. Idahosa
Publsiher: Unknown
Total Pages: 161
Release: 2010
ISBN 10: 1928374650XXX
ISBN 13: OCLC:665146502
Language: EN, FR, DE, ES & NL

Combustion Dynamics and Fluid Mechanics in Acoustically Perturbed Non premixed Swirl stabilized Flames Book Review:

The prevalence of gas turbines operating in primarily lean premixed modes is predicated on the need for lower emissions and increased efficiency. An enhancement in the mixing process through the introduction of swirl in the combustion reactants is also necessary for flame stabilization. The resulting lean swirling flames are often characterized by a susceptibility to feedback between velocity, pressure and heat release perturbations with a potential for unstable self-amplifying dynamics. The existing literature on combustion dynamics is predominantly dedicated to premixed flame configurations motivated by power generation and propulsive gas turbine applications. In the present research effort, an investigation into the response of atmospheric, non-premixed swirling flames to acoustic perturbations at various frequencies (f[subscript p] = 0-315Hz) and swirl intensities (S=0.09 and S=0.34) is carried out. The primary objective of the research effort is to broaden the scope of fundamental understanding in flame dynamics in the literature to include non-premixed swirling flames. Applications of the research effort include control strategies to mitigate the occurrence of combustion instabilities in future power generation gas turbines. Flame heat release is quantitatively measured using a photomultiplier with a 430nm bandpass filter for observing CH* chemiluminescence which is simultaneously imaged with a phase-locked CCD camera. Acoustic perturbations are generated with a loudspeaker at the base of an atmospheric co-flow burner with resulting velocity oscillation amplitudes, [vertical line]u'/U[subscript avg][vertical line] in the 0.03-0.30 range. The dependence of flame dynamics on the relative richness of the flame is investigated by studying various constant fuel flow rate flame configurations. The effect of varying fuel flow rates on the flame response is also examined using with dynamic time-dependent fuel supply rates over the data acquisition period. The Particle Image Velocimetry (PIV) method is used to study the isothermal flow field associated with acoustic pulsing. The acoustic impedance, wavelet analysis, Rayleigh criteria and phase conditioning methods are used to identify fundamental mechanisms common to highly responsive flame configurations.

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.

Flashback Mechanisms in Lean Premixed Gas Turbine Combustion

Flashback Mechanisms in Lean Premixed Gas Turbine Combustion
Author: Ali Cemal Benim,Khawar Jamil Syed
Publsiher: Academic Press
Total Pages: 134
Release: 2014-12-01
ISBN 10: 0128008261
ISBN 13: 9780128008263
Language: EN, FR, DE, ES & NL

Flashback Mechanisms in Lean Premixed Gas Turbine Combustion Book Review:

Blending fuels with hydrogen offers the potential to reduce NOx and CO2 emissions in gas turbines, but doing so introduces potential new problems such as flashback. Flashback can lead to thermal overload and destruction of hardware in the turbine engine, with potentially expensive consequences. The little research on flashback that is available is fragmented. Flashback Mechanisms in Lean Premixed Gas Turbine Combustion by Ali Cemal Benim will address not only the overall issue of the flashback phenomenon, but also the issue of fragmented and incomplete research. Presents a coherent review of flame flashback (a classic problem in premixed combustion) and its connection with the growing trend of popularity of more-efficient hydrogen-blend fuels Begins with a brief review of industrial gas turbine combustion technology Covers current environmental and economic motivations for replacing natural gas with hydrogen-blend fuels

Flow Induced Vibration

Flow Induced Vibration
Author: S. Ziada,M. Samir,T. Staubli
Publsiher: CRC Press
Total Pages: 862
Release: 2000-01-01
ISBN 10: 1482283743
ISBN 13: 9781482283747
Language: EN, FR, DE, ES & NL

Flow Induced Vibration Book Review:

Flow-induced vibrations and noise continue to cause problems in a wide range of engineering applications ranging from civil engineering and marine structures to power generation and chemical processing. These proceedings bring together more than a hundred papers dealing with a variety of topics relating to flow-induced vibration and noise. The cont

Unsteady Combustor Physics

Unsteady Combustor Physics
Author: Tim C. Lieuwen
Publsiher: Cambridge University Press
Total Pages: 520
Release: 2021-09-30
ISBN 10: 1108841317
ISBN 13: 9781108841313
Language: EN, FR, DE, ES & NL

Unsteady Combustor Physics Book Review:

Explore a unified treatment of the dynamics of combustor systems, including acoustics, fluid mechanics, and combustion in a single rigorous text. This updated new edition features an expansion of data and experimental material, updates the coverage of flow stability, and enhanced treatment of flame dynamics. Addresses system dynamics of clean energy and propulsion systems used in low emissions systems. Synthesizing the fields of fluid mechanics and combustion into a coherent understanding of the intrinsically unsteady processes in combustors. This is a perfect reference for engineers and researchers in fluid mechanics, combustion, and clean energy.

Chemical Abstracts

Chemical Abstracts
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 2002
ISBN 10: 1928374650XXX
ISBN 13: UOM:39015057324306
Language: EN, FR, DE, ES & NL

Chemical Abstracts Book Review:

Turbulent Premixed Flames

Turbulent Premixed Flames
Author: Nedunchezhian Swaminathan,K. N. C. Bray
Publsiher: Cambridge University Press
Total Pages: 135
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.

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1995
ISBN 10: 1928374650XXX
ISBN 13: UFL:31262082066985
Language: EN, FR, DE, ES & NL

Scientific and Technical Aerospace Reports Book Review:

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Applied Mechanics Reviews

Applied Mechanics Reviews
Author: Anonim
Publsiher: Unknown
Total Pages: 276
Release: 1972
ISBN 10: 1928374650XXX
ISBN 13: UCAL:C2682440
Language: EN, FR, DE, ES & NL

Applied Mechanics Reviews Book Review:

Applied Combustion Diagnostics

Applied Combustion Diagnostics
Author: KoHse-HoingHaus
Publsiher: CRC Press
Total Pages: 672
Release: 2002-04-26
ISBN 10: 1498719414
ISBN 13: 9781498719414
Language: EN, FR, DE, ES & NL

Applied Combustion Diagnostics Book Review:

The editors have assembled a world-class group of contributors who address the questions the combustion diagnostic community faces. They are chemists who identify the species to be measured and the interfering substances that may be present; physicists, who push the limits of laser spectroscopy and laser devices and who conceive suitable measurement schemes; and engineers, who know combustion systems and processes. This book assists in providing guidance for the planning of combustion experiments, in judging research strategies and in conceiving new ideas for combustion research. It provides a snapshot of the available diagnostic methods and thier typical applications from the perspective of leading experts in the field.

International Aerospace Abstracts

International Aerospace Abstracts
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1999
ISBN 10: 1928374650XXX
ISBN 13: STANFORD:36105021810614
Language: EN, FR, DE, ES & NL

International Aerospace Abstracts Book Review:

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.

Fundamentals of Premixed Turbulent Combustion

Fundamentals of Premixed Turbulent Combustion
Author: Andrei Lipatnikov
Publsiher: CRC Press
Total Pages: 548
Release: 2012-10-24
ISBN 10: 1466510242
ISBN 13: 9781466510241
Language: EN, FR, DE, ES & NL

Fundamentals of Premixed Turbulent Combustion Book Review:

Lean burning of premixed gases is considered to be a promising combustion technology for future clean and highly efficient gas turbine combustors. Yet researchers face several challenges in dealing with premixed turbulent combustion, from its nonlinear multiscale nature and the impact of local phenomena to the multitude of competing models. Filling a gap in the literature, Fundamentals of Premixed Turbulent Combustion introduces the state of the art of premixed turbulent combustion in an accessible manner for newcomers and experienced researchers alike. To more deeply consider current research issues, the book focuses on the physical mechanisms and phenomenology of premixed flames, with a brief discussion of recent advances in partially premixed turbulent combustion. It begins with a summary of the relevant knowledge needed from disciplines such as thermodynamics, chemical kinetics, molecular transport processes, and fluid dynamics. The book then presents experimental data on the general appearance of premixed turbulent flames and details the physical mechanisms that could affect the flame behavior. It also examines the physical and numerical models for predicting the key features of premixed turbulent combustion. Emphasizing critical analysis, the book compares competing concepts and viewpoints with one another and with the available experimental data, outlining the advantages and disadvantages of each approach. In addition, it discusses recent advances and highlights unresolved issues. Written by a leading expert in the field, this book provides a valuable overview of the physics of premixed turbulent combustion. Combining simplicity and topicality, it helps researchers orient themselves in the contemporary literature and guides them in selecting the best research tools for their work.

Combustion Instabilities in Gas Turbine Engines

Combustion Instabilities in Gas Turbine Engines
Author: Timothy C. Lieuwen
Publsiher: Progress in Astronautics and A
Total Pages: 688
Release: 2005
ISBN 10: 1928374650XXX
ISBN 13: UOM:39015062471126
Language: EN, FR, DE, ES & NL

Combustion Instabilities in Gas Turbine Engines Book Review:

Higher operating efficiencies, fewer pollutant emissions, and low capital investment have made gas turbines a dominant technology for new power generating capacity in the U.S. and worldwide. 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.

Laser Diagnostics for Combustion Temperature and Species

Laser Diagnostics for Combustion Temperature and Species
Author: Alan C. Eckbreth
Publsiher: CRC Press
Total Pages: 636
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:

Focusing on spectroscopically-based, spatially-precise, laser techniques for temperature and chemical composition measurements in reacting and non-reacting flows, this book makes these powerful and important new tools in combustion research

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.

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.

Handbook of Fluid Dynamics

Handbook of Fluid Dynamics
Author: Richard W. Johnson
Publsiher: CRC Press
Total Pages: 1580
Release: 2016-04-06
ISBN 10: 1439849579
ISBN 13: 9781439849576
Language: EN, FR, DE, ES & NL

Handbook of Fluid Dynamics Book Review:

Handbook of Fluid Dynamics offers balanced coverage of the three traditional areas of fluid dynamics-theoretical, computational, and experimental-complete with valuable appendices presenting the mathematics of fluid dynamics, tables of dimensionless numbers, and tables of the properties of gases and vapors. Each chapter introduces a different fluid

CFD Techniques and Energy Applications

CFD Techniques and Energy Applications
Author: Zied Driss,Brahim Necib,Hao-Chun Zhang
Publsiher: Springer
Total Pages: 194
Release: 2018-02-22
ISBN 10: 331970950X
ISBN 13: 9783319709505
Language: EN, FR, DE, ES & NL

CFD Techniques and Energy Applications Book Review:

This book focuses on CFD (Computational Fluid Dynamics) techniques and the recent developments and research works in energy applications. It is devoted to the publication of basic and applied studies broadly related to this area. The chapters present the development of numerical methods, computational techniques, and case studies in the energy applications. Also, they offer the fundamental knowledge for using CFD in energy applications through new technical approaches. Besides, they describe the CFD process steps and provide benefits and issues for using CFD analysis in understanding the flow complicated phenomena and its use in the design process. The best practices for reducing errors and uncertainties in the CFD analysis are further described. The book reveals not only the recent advances and future research trends of CFD Techniques but also provides the reader with valuable information about energy applications. It aims to provide the readers, such as engineers and PhD students, with the fundamentals of CFD prior to embarking on any real simulation project. Additionally, engineers supporting or being supported by CFD analysts can take advantage from the information of the book’s different chapters. ​