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Author : Edward Michael Kerwin
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (311 download)
Download or read book A Study of a Class of Thermoacoustic Oscillations written by Edward Michael Kerwin and published by . This book was released on 1954 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Douglas Martin Nark
Publisher :
ISBN 13 :
Total Pages : 222 pages
Book Rating : 4.:/5 (393 download)
Download or read book A Numerical Investigation of Thermoacoustic Oscillations written by Douglas Martin Nark and published by . This book was released on 1998 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. I. Sujith
Publisher : Springer Nature
ISBN 13 : 3030811352
Total Pages : 484 pages
Book Rating : 4.0/5 (38 download)
Download or read book Thermoacoustic Instability written by R. I. Sujith and published by Springer Nature. This book was released on 2021-12-14 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically presents the consolidated findings of the phenomenon of self-organization observed during the onset of thermoacoustic instability using approaches from dynamical systems and complex systems theory. Over the last decade, several complex dynamical states beyond limit cycle oscillations such as quasiperiodicity, frequency-locking, period-n, chaos, strange non-chaos, and intermittency have been discovered in thermoacoustic systems operated in laminar and turbulent flow regimes. During the onset of thermoacoustic instability in turbulent systems, an ordered acoustic field and large coherent vortices emerge from the background of turbulent combustion. This emergence of order from disorder in both temporal and spatiotemporal dynamics is explored in the contexts of synchronization, pattern formation, collective interaction, multifractality, and complex networks. For the past six decades, the spontaneous emergence of large amplitude, self-sustained, tonal oscillations in confined combustion systems, characterized as thermoacoustic instability, has remained one of the most challenging areas of research. The presence of such instabilities continues to hinder the development and deployment of high-performance combustion systems used in power generation and propulsion applications. Even with the advent of sophisticated measurement techniques to aid experimental investigations and vast improvements in computational power necessary to capture flow physics in high fidelity simulations, conventional reductionist approaches have not succeeded in explaining the plethora of dynamical behaviors and the associated complexities that arise in practical combustion systems. As a result, models and theories based on such approaches are limited in their application to mitigate or evade thermoacoustic instabilities, which continue to be among the biggest concerns for engine manufacturers today. This book helps to overcome these limitations by providing appropriate methodologies to deal with nonlinear thermoacoustic oscillations, and by developing control strategies that can mitigate and forewarn thermoacoustic instabilities. The book is also beneficial to scientists and engineers studying the occurrence of several other instabilities, such as flow-induced vibrations, compressor surge, aeroacoustics and aeroelastic instabilities in diverse fluid-mechanical environments, to graduate students who intend to apply dynamical systems and complex systems approach to their areas of research, and to physicists who look for experimental applications of their theoretical findings on nonlinear and complex systems.
Author : André Sven Paul Niederberger
Publisher : Cuvillier Verlag
ISBN 13 : 3865379052
Total Pages : 219 pages
Book Rating : 4.8/5 (653 download)
Download or read book Investigations of Thermoacoustic Oscillations written by André Sven Paul Niederberger and published by Cuvillier Verlag. This book was released on 2006 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Umut Zalluhoglu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (119 download)
Download or read book Analysis and Control of Thermoacoustic Instability: a Time Delay Systems Approach written by Umut Zalluhoglu and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoacoustic instability arises from the interaction between unsteady heat release and pressure perturbations in an acoustic enclosure. The pressure oscillations grow and lead to excessive stress reversals in the structure, raising fatigue concerns and mechanical failures. This common phenomenon in the realistic combustors and rocket engines has been broadly studied over a simplistic laboratory abstraction called the Rijke tube. This simple set-up offers a convenient platform to elucidate the fundamental physics of thermoacoustic instabilities. As evident from the most recent literature, there are numerous aspects of this phenomenon even in the Rijke tube setting that are not fully understood and explored. The current work addresses some of them by forming a bridge between thermoacoustics research and time delay systems stability theory. Under certain conditions, this phenomenon can be modeled as a linear time-invariant dynamics which is affected by multiple time delays. Moreover it falls into the â€neutral†time delay systems sub-class, stability analysis of which is notoriously challenging. In order to assess its stability, a recent mathematical paradigm called the Cluster Treatment of Characteristic Roots (CTCR) is used throughout this work. This combination forms the key contributions of this doctoral study, which are summarized as: (i) Analytical prediction of thermoacoustic instability in Rijke tube in the parametric space of the system. (ii) Introduction of a time-delayed integral controller. This approach leads to novel frontiers for feedback stabilization of thermoacoustic oscillations via a holistic analysis. (iii) Parametric assessment of passive control of thermoacoustic instability using Helmholtz resonator. Specifically geometric characteristics are investigated to stabilize an unstable operation. (iv) Introduction of active-passive stabilization methods, combining a Helmholtz resonator and a feedback loop over a Rijke tube. A new capability is developed to predict control-induced instabilities over this setting. All of these analytically-discovered features are verified with experiments performed in the Advanced Laboratory for Automation, Robotics and Manufacturing. This unique approach is expected to improve the initial design efforts of real-world combustors.
Author : George H. Markstein
Publisher : Elsevier
ISBN 13 : 1483221628
Total Pages : 339 pages
Book Rating : 4.4/5 (832 download)
Download or read book Nonsteady Flame Propagation written by George H. Markstein and published by Elsevier. This book was released on 2014-12-02 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonsteady Flame Propagation provides information pertinent to flame propagation in gaseous media. This book focuses on linearized treatments and the comparison of their results with experimental observations. Organized into nine chapters, this book begins with an overview of the challenge of nonlinear problems and examines the essentially nonlinear character of the flame phenomena, which has been artificially suppressed in analyses by the use of linearized perturbation treatments. This text then summarizes the development regarding rocket-shaped burners. Other chapters consider the advantages as well as the limitations of linearized analyses. This book discusses as well a general treatment of the discontinuous-flame-front model and summarizes the results of studies of burner that use secondary air. The final chapter deals with re-examining the possibilities of using pulsating combustion in propulsion or in other applications. This book is a valuable resource for chemical engineers, chemists, scientists, and research workers.
Author : Tetsushi Biwa
Publisher : World Scientific
ISBN 13 : 1944659781
Total Pages : 327 pages
Book Rating : 4.9/5 (446 download)
Download or read book Introduction To Thermoacoustic Devices written by Tetsushi Biwa and published by World Scientific. This book was released on 2021-08-23 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oscillations of gas and/or liquid columns in a flow channel can lead to various phenomena such as Stirling cycle heat engines, pulse tube refrigerators, as well as thermally induced gas oscillations like Sondhauss tube and Rijke tube. Although those phenomena may look different from each other, they can be universally described by the concepts of work flow and heat flow. Work flow stands for the acoustic power used in acoustics. Heat flow is the energy flow associated with the hydrodynamic transport of entropy. These energy flows help us to understand the thermoacoustic phenomena and construct acoustical heat engines.The book aims to provide a comprehensive overview of how the oscillations of gas and/or liquid columns make possible the mutual energy conversions between work flow and heat flow through thermal interactions between fluids and channel walls. The thermodynamic aspects of energy flows are highlighted by introducing Lagrangian point of view to explain the thermodynamic cycles that the fluid parcels undergo. The relevant experimental results are provided to verify the theoretical analysis based on basic equations of fluid dynamics.
Author : Nobumasa Sugimoto
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (119 download)
Download or read book Experiments on Self-excited Thermoacoustic Oscillations in an Air-filled Closed Tube written by Nobumasa Sugimoto and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gregory W. Swift
Publisher : Springer
ISBN 13 : 3319669338
Total Pages : 340 pages
Book Rating : 4.3/5 (196 download)
Download or read book Thermoacoustics written by Gregory W. Swift and published by Springer. This book was released on 2017-10-05 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated new edition provides an introduction to the field of thermoacoustics. All of the key aspects of the topic are introduced, with the goal of helping the reader to acquire both an intuitive understanding and the ability to design hardware, build it, and assess its performance. Weaving together intuition, mathematics, and experimental results, this text equips readers with the tools to bridge the fields of thermodynamics and acoustics. At the same time, it remains firmly grounded in experimental results, basing its discussions on the distillation of a body of experiments spanning several decades and countries. The book begins with detailed treatment of the fundamental physical laws that underlie thermoacoustics. It then goes on to discuss key concepts, including simple oscillations, waves, power, and efficiency. The remaining portions of the book delve into more advanced topics and address practical concerns in applications chapters on hardware and measurements. With its careful progression and end-of-chapter exercises, this book will appeal to graduate students in physics and engineering as well as researchers and practitioners in either acoustics or thermodynamics looking to explore the possibilities of thermoacoustics. This revised and expanded second edition has been updated with an eye to modern technology, including computer animations and DeltaEC examples.
Author : Stefan Benedikt Jaensch
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (989 download)
Download or read book On the Efficient Numerical Modeling of Nonlinear Self-excited Thermoacoustic Oscillations written by Stefan Benedikt Jaensch and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Massachusetts Institute of Technology
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.0/5 ( download)
Download or read book Abstracts of Theses Accepted in Partial Fulfillment of the Requirements for the Doctor's Degree written by Massachusetts Institute of Technology and published by . This book was released on 1960 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 966 pages
Book Rating : 4.:/5 (319 download)
Download or read book Quarterly of Applied Mathematics written by and published by . This book was released on 1954 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yu Guan
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (15 download)
Download or read book Open-loop Control of Periodic and Aperiodic Thermoacoustic Oscillations Using External Acoustic Forcing written by Yu Guan and published by . This book was released on 2018 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dan Zhao
Publisher : Academic Press
ISBN 13 : 0323899188
Total Pages : 1145 pages
Book Rating : 4.3/5 (238 download)
Download or read book Thermoacoustic Combustion Instability Control written by Dan Zhao and published by Academic Press. This book was released on 2023-02-13 with total page 1145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoacoustic Combustion Instability Control: Engineering Applications and Computer Codes provides a unique opportunity for researchers, students and engineers to access recent developments from technical, theoretical and engineering perspectives. The book is a compendium of the most recent advances in theoretical and computational modeling and the thermoacoustic instability phenomena associated with multi-dimensional computing methods and recent developments in signal-processing techniques. These include, but are not restricted to a real-time observer, proper orthogonal decomposition (POD), dynamic mode decomposition, Galerkin expansion, empirical mode decomposition, the Lattice Boltzmann method, and associated numerical and analytical approaches. The fundamental physics of thermoacoustic instability occurs in both macro- and micro-scale combustors. Practical methods for alleviating common problems are presented in the book with an analytical approach to arm readers with the tools they need to apply in their own industrial or research setting. Readers will benefit from practicing the worked examples and the training provided on computer coding for combustion technology to achieve useful results and simulations that advance their knowledge and research. - Focuses on applications of theoretical and numerical modes with computer codes relevant to combustion technology - Includes the most recent modeling and analytical developments motivated by empirical experimental observations in a highly visual way - Provides self-contained chapters that include a comprehensive, introductory section that ensures any readers new to this topic are equipped with required technical terms
Author : Massachusetts Institute of Technology. Acoustics Laboratory
Publisher :
ISBN 13 :
Total Pages : 460 pages
Book Rating : 4.:/5 (319 download)
Download or read book Quarterly Progress Report written by Massachusetts Institute of Technology. Acoustics Laboratory and published by . This book was released on 1954 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tim C. Lieuwen
Publisher : Cambridge University Press
ISBN 13 : 1139576836
Total Pages : 427 pages
Book Rating : 4.1/5 (395 download)
Download or read book Unsteady Combustor Physics written by Tim C. Lieuwen and published by Cambridge University Press. This book was released on 2012-08-27 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Timothy C. Lieuwen
Publisher : AIAA (American Institute of Aeronautics & Astronautics)
ISBN 13 :
Total Pages : 688 pages
Book Rating : 4.3/5 (91 download)
Download or read book Combustion Instabilities in Gas Turbine Engines written by Timothy C. Lieuwen and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2005 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
