Turbomachinery Rotordynamics

Phenomena, Modeling, and Analysis

Author: Dara Childs,Dara W. Childs

Publisher: John Wiley & Sons

ISBN: 9780471538400

Category: Science

Page: 476

View: 6675

Imparts the theory and analysis regarding the dynamics of rotating machinery in order to design such rotating devices as turbines, jet engines, pumps and power-transmission shafts. Takes into account the forces acting upon machine structures, bearings and related components. Provides numerical techniques for analyzing and understanding rotor systems with examples of actual designs. Features an excellent treatment of numerical methods available to obtain computer solutions for authentic design problems.

Rotordynamics of Turbomachinery

Author: John M. Vance

Publisher: John Wiley & Sons

ISBN: 9780471802587

Category: Technology & Engineering

Page: 388

View: 9227

Describes the rotordynamic considerations that are important to the successful design or troubleshooting of a turbomachine. Shows how bearing design, fluid seals, and rotor geometry affect rotordynamic behavior (vibration, shaft whirling, bearing loads, and critical speeds), and describes two successful computational methods for rotordynamic analysis in terms that can be understood by practicing engineers. Gives descriptive accounts of the state of the art in several areas of the field and presents important mathematical or computational concepts, describing equations and formulas in physical terms for better understanding. Also offers tips for troubleshooting unstable machines and provides practical interpretations of vibration measurements.

Machinery Vibration and Rotordynamics

Author: John M. Vance,Fouad Y. Zeidan,Brian G. Murphy

Publisher: John Wiley & Sons

ISBN: 9780470916070

Category: Technology & Engineering

Page: 416

View: 8909

An in-depth analysis of machine vibration in rotating machinery Whether it's a compressor on an offshore platform, a turbocharger in a truck or automobile, or a turbine in a jet airplane, rotating machinery is the driving force behind almost anything that produces or uses energy. Counted on daily to perform any number of vital societal tasks, turbomachinery uses high rotational speeds to produce amazing amounts of power efficiently. The key to increasing its longevity, efficiency, and reliability lies in the examination of rotor vibration and bearing dynamics, a field called rotordynamics. A valuable textbook for beginners as well as a handy reference for experts, Machinery Vibration and Rotordynamics is teeming with rich technical detail and real-world examples geared toward the study of machine vibration. A logical progression of information covers essential fundamentals, in-depth case studies, and the latest analytical tools used for predicting and preventing damage in rotating machinery. Machinery Vibration and Rotordynamics: Combines rotordynamics with the applications of machinery vibration in a single volume Includes case studies of vibration problems in several different types of machines as well as computer simulation models used in industry Contains fundamental physical phenomena, mathematical and computational aspects, practical hardware considerations, troubleshooting, and instrumentation and measurement techniques For students interested in entering this highly specialized field of study, as well as professionals seeking to expand their knowledge base, Machinery Vibration and Rotordynamics will serve as the one book they will come to rely upon consistently.

Rotordynamics of Automotive Turbochargers

Author: Hung Nguyen-Schäfer

Publisher: Springer

ISBN: 3319176447

Category: Technology & Engineering

Page: 362

View: 8656

Rotordynamics of automotive turbochargers is dealt with in this book encompassing the widely working field of small turbomachines under real operating conditions at the very high rotor speeds up to 300000 rpm. The broadly interdisciplinary field of turbocharger rotordynamics involves 1) Thermodynamics and Turbo-Matching of Turbochargers 2) Dynamics of Turbomachinery 3) Stability Analysis of Linear Rotordynamics with the Eigenvalue Theory 4) Stability Analysis of Nonlinear Rotordynamics with the Bifurcation Theory 5) Bearing Dynamics of the Oil Film using the Two-Phase Reynolds Equation 6) Computation of Nonlinear Responses of a Turbocharger Rotor 7) Aero and Vibroacoustics of Turbochargers 8) Shop and Trim Balancing at Two Planes of the Rotor 9) Tribology of the Bearing Surface Roughness 10) Design of Turbocharger Platforms using the Similarity Laws The rotor response of an automotive turbocharger at high rotor speeds is studied analytically, computationally, and experimentally. Due to the nonlinear characteristics of the oil-film bearings, some nonlinear responses of the rotor besides the harmonic response 1X, such as oil whirl, oil whip, and modulated frequencies occur in Waterfall diagram. Additionally, the influences of the surface roughness and oil characteristics on the rotor behavior, friction, and wear are discussed. This book is written by an industrial R&D expert with many years of experience in the automotive and turbocharger industries. The all-in-one book of turbochargers is intended for scientific and engineering researchers, practitioners working in the rotordynamics field of automotive turbochargers, and graduate students in applied physics and mechanical engineering.

Rotordynamics 2

Problems in Turbomachinery

Author: Neville F. Rieger

Publisher: Springer

ISBN: 3709128463

Category: Technology & Engineering

Page: 586

View: 3680


Analytical Methods in Rotor Dynamics

Second Edition

Author: Andrew D. Dimarogonas,Stefanos A. Paipetis,Thomas G. Chondros

Publisher: Springer Science & Business Media

ISBN: 9400759053

Category: Technology & Engineering

Page: 274

View: 3174

The design and construction of rotating machinery operating at supercritical speeds was, in the 1920s, an event of revolutionary importance for the then new branch of dynamics known as rotor dynamics. In the 1960s, another revolution occurred: In less than a decade, imposed by operational and economic needs, an increase in the power of turbomachinery by one order of magnitude took place. Dynamic analysis of complex rotor forms became a necessity, while the importance of approximate methods for dynamic analysis was stressed. Finally, the emergence of fracture mechanics, as a new branch of applied mechanics, provided analytical tools to investigate crack influence on the dynamic behavior of rotors. The scope of this book is based on all these developments. No topics related to the well-known classical problems are included, rather the book deals exclusively with modern high-power turbomachinery.

Mechanische Schwingungen

Author: Jacob P. DenHartog

Publisher: Springer-Verlag

ISBN: 3662124440

Category: Science

Page: 427

View: 849

Die amerikanische Ausgabe dieses Buches erschien 1947 in der dritten, nicht unwesentlich erweiterten Auflage. Der Verfasser erwähnt in seinem Vorwort, daß es ursprünglich aus dem Text von Vorlesungen an der Design School der W estinghouse Company entstand und zu nächst für den Unterrichtsgebrauch an der Harvard Engineering School herausgegeben wurde. In die Neuauflage wurden neue Veröffentlichungen und eigene Erfahrungen eingearbeitet. Im Vorwort der deutschen Erstauflage (1936) wurde darauf hin gewiesen, daß das vorliegende Buch eine glückliche, dem ingenieur mäßigen Denken entsprechende Anschaulichkeit hat. Der Verfasser ver meidet es, lediglich Gebrauchsanweisungen für Rechenvorschriften zu geben; andererseits verzichtet er auf die Ausarbeitung der vollstän digen, strengen Theorie. Er versteht es, dem Leser die wesentlichen Zusammenhänge auch verwickelter Erscheinungen plausibel zu machen. So vermittelt die Darstellung nicht einen höheren theoreti schen Überblick, sondern leitet den Leser mit einfacher mathematischer oder anschaulicher mechanischer Begründung auf einen Weg, der in praktischen Schwingungsfragen zur zahlenmäßigen Lösung, mindestens aber zu einer guten Annäherung der "exakten" Lösung führt. Eine Fülle von Beispielen und Aufgaben regt dazu an, die Beherrschung der dargelegten Rechenverfahren zu erproben und zu vertiefen. Aus diesen Gründen erfolgte die Übersetzung in die deutsche Sprache. Inzwischen ist die amerikanische Ausgabe mit großem Erfolg im Hochschulunterricht eingesetzt worden. Den deutschen Leser inter essiert vielleicht der Hinweis, daß der Hochschulunterricht in Amerika von der europäischen Art sehr verschieden ist. Die Vorlesungen werden nach einem bestimmten "Textbuch" gelesen.

Principles of Turbomachinery in Air-Breathing Engines

Author: Erian A. Baskharone

Publisher: Cambridge University Press

ISBN: 0521858100

Category: Science

Page: 580

View: 5999

This book is intended for advanced undergraduate and graduate students in mechanical and aerospace engineering taking a course commonly called Principles of Turbomachinery or Aerospace Propulsion. The book begins with a review of basic thermodynamics and fluid mechanics principles to motive their application to aerothermodynamics and real-life design issues. This approach is ideal for the reader who will face practical situations and design decisions in the gas turbine industry. The text is fully supported by over 200 figures, numerous examples, and homework problems.

Proceedings of the 9th IFToMM International Conference on Rotor Dynamics

Author: Paolo Pennacchi

Publisher: Springer

ISBN: 3319065904

Category: Technology & Engineering

Page: 2294

View: 6002

This book presents the proceedings of the 9th IFToMM International Conference on Rotor Dynamics. This conference is a premier global event that brings together specialists from the university and industry sectors worldwide in order to promote the exchange of knowledge, ideas, and information on the latest developments and applied technologies in the dynamics of rotating machinery. The coverage is wide ranging, including, for example, new ideas and trends in various aspects of bearing technologies, issues in the analysis of blade dynamic behavior, condition monitoring of different rotating machines, vibration control, electromechanical and fluid-structure interactions in rotating machinery, rotor dynamics of micro, nano and cryogenic machines, and applications of rotor dynamics in transportation engineering. Since its inception 32 years ago, the IFToMM International Conference on Rotor Dynamics has become an irreplaceable point of reference for those working in the field and this book reflects the high quality and diversity of content that the conference continues to guarantee.

Rotordynamics

Author: Agnieszka Muszynska

Publisher: CRC Press

ISBN: 1420027794

Category: Technology & Engineering

Page: 1128

View: 6029

As the most important parts of rotating machinery, rotors are also the most prone to mechanical vibrations, which may lead to machine failure. Correction is only possible when proper and accurate diagnosis is obtained through understanding of rotor operation and all of the potential malfunctions that may occur. Mathematical modeling, in particular modal modeling, is key to understanding observed phenomena through measured data and for predicting and preventing failure. Rotordynamics advances simple yet adequate models of rotordynamic problems and phenomena related to rotor operation in its environment. Based on Dr. Muszy(n ́)ska's extensive work at Bently Rotor Dynamics Research Corporation, world renowned for innovative and groundbreaking experiments in the field, this book provides realistic models, step-by-step experimental methods, and the principles of vibration monitoring and practical malfunction diagnostics of rotating machinery. It covers extended rotor models, rotor/fluid-related phenomena, rotor-to-stationary part rubbing, and other related problems such as nonsynchronous perturbation testing. The author also illustrates practical diagnoses of several possible malfunctions and emphasizes correct interpretation of computer-generated numerical results. Rotordynamics is the preeminent guide to rotordynamic theory and practice. It is the most valuable tool available for anyone working on modeling rotating machinery at the machine design stage or performing further analytical and experimental research on rotating machine dynamics.

Strömungsmaschinen

Turbinen, Kreiselpumpen und Verdichter Eine Einführung

Author: M. Adolph

Publisher: Springer-Verlag

ISBN: 3642882943

Category: Technology & Engineering

Page: 360

View: 1618


Gasturbinen Handbuch

Author: Meherwan P. Boyce

Publisher: Springer-Verlag

ISBN: 3642598412

Category: Science

Page: 593

View: 8170

Dieses amerikanische Standardwerk wurde vom Übersetzer angepaßt auf die deutschen Verhältnisse. Es bietet wertvolle Informationen für Installation, Betrieb und Wartung, technische Details der Auslegung, Kennzahlen und vieles mehr.

IUTAM Symposium on Emerging Trends in Rotor Dynamics

Proceedings of the IUTAM Symposium on Emerging Trends in Rotor Dynamics, held in New Delhi, India, March 23 - March 26, 2009

Author: K. Gupta

Publisher: Springer Science & Business Media

ISBN: 9789400700208

Category: Technology & Engineering

Page: 555

View: 8768

Rotor dynamics is an important branch of dynamics that deals with behavior of rotating machines ranging from very large systems like power plant rotors, for example, a turbogenerator, to very small systems like a tiny dentist’s drill, with a variety of rotors such as pumps, compressors, steam/gas turbines, motors, turbopumps etc. as used for example in process industry, falling in between. The speeds of these rotors vary in a large range, from a few hundred RPM to more than a hundred thousand RPM. Complex systems of rotating shafts depending upon their specific requirements, are supported on different types of bearings. There are rolling element bearings, various kinds of fluid film bearings, foil and gas bearings, magnetic bearings, to name but a few. The present day rotors are much lighter, handle a large amount of energy and fluid mass, operate at much higher speeds, and therefore are most susceptible to vibration and instability problems. This have given rise to several interesting physical phenomena, some of which are fairly well understood today, while some are still the subject of continued investigation. Research in rotor dynamics started more than one hundred years ago. The progress of the research in the early years was slow. However, with the availability of larger computing power and versatile measurement technologies, research in all aspects of rotor dynamics has accelerated over the past decades. The demand from industry for light weight, high performance and reliable rotor-bearing systems is the driving force for research, and new developments in the field of rotor dynamics. The symposium proceedings contain papers on various important aspects of rotor dynamics such as, modeling, analytical, computational and experimental methods, developments in bearings, dampers, seals including magnetic bearings, rub, impact and foundation effects, turbomachine blades, active and passive vibration control strategies including control of instabilities, nonlinear and parametric effects, fault diagnostics and condition monitoring, and cracked rotors. This volume is of immense value to teachers, researchers in educational institutes, scientists, researchers in R&D laboratories and practising engineers in industry.

Handbook of Turbomachinery

Author: Earl Logan, Jr.

Publisher: CRC Press

ISBN: 0824748476

Category: Technology & Engineering

Page: 880

View: 5104

Building on the success of its predecessor, Handbook of Turbomachinery, Second Edition presents new material on advances in fluid mechanics of turbomachinery, high-speed, rotating, and transient experiments, cooling challenges for constantly increasing gas temperatures, advanced experimental heat transfer and cooling effectiveness techniques, and propagation of wake and pressure disturbances. Completely revised and updated, it offers updated chapters on compressor design, rotor dynamics, and hydraulic turbines and features six new chapters on topics such as aerodynamic instability, flutter prediction, blade modeling in steam turbines, multidisciplinary design optimization.

Control of Surge in Centrifugal Compressors by Active Magnetic Bearings

Theory and Implementation

Author: Se Young Yoon,Zongli Lin,Paul E. Allaire

Publisher: Springer Science & Business Media

ISBN: 1447142403

Category: Technology & Engineering

Page: 275

View: 2133

Surge Control of Active-magnetic-bearing-suspended Centrifugal Compressors sets out the fundamentals of integrating active magnetic bearing (AMB) rotor suspension technology in compressor systems, and describes how this relatively new bearing technology can be employed in active control of compressor surge initiation. The authors provide a self-contained and comprehensive review of rotordynamics and the fundamentals of AMB technology. The active stabilization of compressor surge employing AMBs in a machine is fully explored, from modeling of instability and controller design, to the implementation and experimental testing of the control algorithm in a specially-constructed, industrial-size centrifugal compression system. The results of these tests demonstrate the great potential of the new surge control method suggested in this text. This book will be useful for engineers in industries that involve turbocompressors and magnetic bearings, as well as for researchers and graduate students in the field of applied control. Whatever their level of experience, engineers working in the fields of turbomachinery, magnetic bearings, rotordynamics and controls will find the material in this book absorbing as all these important aspects of engineering are integrated to create a multi-disciplinary solution to a real-life industrial problem and the book is a suitable introduction to the area for newcomers.