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Spirals And Vortices

Author : Kinko Tsuji
ISBN : 9783030057985
Genre : Science
File Size : 36. 24 MB
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This richly illustrated book explores the fascinating and ubiquitous occurrence of spirals and vortices in human culture and in nature. Spiral forms have been used as elements in the arts for thousands of years, whereas their role in nature and science – from DNA and sea shells to galaxies – is still a topic of investigation in numerous fields. Following an introduction to the cultural history of spiral forms, the book presents contributions from leading experts, who describe the origins, mechanisms and dynamics of spirals and vortices in their special fields. As a whole the book provides a valuable source of information, while also taking the reader on an aesthetic and scientific journey through the world of spiral forms.

Rossby Vortices Spiral Structures Solitons

Author : Mikhail V. Nezlin
ISBN : 9783642881220
Genre : Science
File Size : 74. 25 MB
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This book can be looked upon in more ways than one. On the one hand, it describes strikingly interesting and lucid hydrodynamic experiments done in the style of the "good old days" when the physicist needed little more than a piece of string and some sealing wax. On the other hand, it demonstrates how a profound physical analogy can help to get a synoptic view on a broad range of nonlinear phenomena involving self-organization of vortical structures in planetary atmo spheres and oceans, in galaxies and in plasmas. In particular, this approach has elucidated the nature and the mechanism of such grand phenomena as the Great of galaxies. A number of our Red Spot vortex on Jupiter and the spiral arms predictions concerning the dynamics of spiral galaxies are now being confirmed by astronomical observations stimulated by our experiments. This book is based on the material most of which was accumulated during 1981-88 in close cooperation with our colleagues, experimenters from the Plasma Physics Department of the Kurchatov Atomic Energy Institute (S. V. Antipov, A. S. Trubnikov, AYu. Rylov, AV. Khutoretsky) and astrophysics theoreticians from the Astronomical Council of the USSR Academy of Sciences (AM. Frid man) and from the Volgograd State University (AG. Morozov). To all of them we wish to express our gratitude. Whenever we speak of "our experiments", the participation of the entire team is implied.

Dissipative Phenomena In Condensed Matter

Author : Sushanta Dattagupta
ISBN : 3540203818
Genre : Science
File Size : 55. 68 MB
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A reference and text, Dissipative Phenomena treats the broadly applicable area of nonequilibrium statistical physics and concentrates the modelling and characterization of dissipative phenomena. A variety of examples from diverse disciplines, such as condensed matter physics, materials science, metallurgy, chemical physics, are discussed. Dattagupta employs a broad framework of stochastic processes and master equation techniques to obtain models for a range of experimentally relevant phenomena such as classical and quantum Brownian motion, spin dynamics, kinetics of phase ordering, relaxation in glasses, and dissipative tunnelling. This book will serve as a graduate/research level textbook since it offers considerable utility to experimentalists, computational physicists and theorists.

Mathematical Aspects Of Vortex Dynamics

Author : Russel E. Caflisch
ISBN : 0898712351
Genre : Science
File Size : 90. 46 MB
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Fluid Vortices

Author : Sheldon Green
ISBN : 9789401102490
Genre : Technology & Engineering
File Size : 54. 35 MB
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Fluid Vortices is a comprehensive, up-to-date, research-level overview covering all salient flows in which fluid vortices play a significant role. The various chapters have been written by specialists from North America, Europe and Asia, making for unsurpassed depth and breadth of coverage. Topics addressed include fundamental vortex flows (mixing layer vortices, vortex rings, wake vortices, vortex stability, etc.), industrial and environmental vortex flows (aero-propulsion system vortices, vortex-structure interaction, atmospheric vortices, computational methods with vortices, etc.), and multiphase vortex flows (free-surface effects, vortex cavitation, and bubble and particle interactions with vortices). The book can also be recommended as an advanced graduate-level supplementary textbook. The first nine chapters of the book are suitable for a one-term course; chapters 10--19 form the basis for a second one-term course.

Advances In Turbulence Iv

Author : F.T. Nieuwstadt
ISBN : 0792322827
Genre : Technology & Engineering
File Size : 55. 39 MB
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The European Turbulence Conferences have been organized under the auspices of the European Mechanics Committee (Euromech) to provide a forum for discussion and exchange of recent and new results in the field of turbulence. The first conference was organized in Lyon in 1986 with 152 participants. The second and third conferences were held in Berlin (1988) and Stockholm (1990) with 165 and 172 participants respectively. The fourth was organized in Delft from 30 June to 3 July 1992 by the J.M. Burgers Centre. There were 214 participants from 22 countries. This steadily growing number of participants demonstrates both the success and need for this type of conference. The main topics of the Fourth European Turbulence Conference were: Dynamical Systems and Transition; Statistical Physics and Turbulence; Experiments and Novel Experimental Techniques; Particles and Bubbles in Turbulence; Simulation Methods; Coherent Structures; Turbulence Modelling and Compressibility Effects. In addition a special session was held on the subject of CeBular Automata. Each of the sessions was introduced with a survey lecture. The lecturers were: W. Eckhaus, AJ. Libchaber, L. Katgerman, F. Durst, M. Lesieur, B. Legras, D.G. Dritschel and P. Bradshaw. The contributions of the participants were subdivided into oral and poster presentations. In addition to the normal program, some Speciai Interest Groups of Ercoftac (European Research Community on Flow, Turbulence and Combustion) presented their research activities in the form of a poster.

Patterns And Interfaces In Dissipative Dynamics

Author : L.M. Pismen
ISBN : 9783540304319
Genre : Science
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Spontaneous pattern formation in nonlinear dissipative systems far from equilibrium occurs in a variety of settings in nature and technology, and has applications ranging from nonlinear optics through solid and fluid mechanics, physical chemistry and chemical engineering to biology. This book explores the forefront of current research, describing in-depth the analytical methods that elucidate the complex evolution of nonlinear dissipative systems.

Vortex Flow

Author : Akira Ogawa
ISBN : 0849357829
Genre : Technology & Engineering
File Size : 62. 32 MB
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Vortex Flow presents a detailed description of the natural phenomena of vortices, fundamental concepts, and applications of the vortex flows. Numerous figures and examples illustrate concepts presented in this interesting book for mechanical, chemical, powder, and aeronautical engineers and engineering students.

Physics Of Rotating Fluids

Author : Christoph Egbers
ISBN : 9783540675143
Genre : Science
File Size : 25. 95 MB
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This book is devoted to recent developments in the field of rotating fluids, in particular the study of Taylor--Couette flow, spherical Couette flow, planar Couette flow, as well as rotating annulus flow. Besides a comprehensive overview of the current state of the art, possible future directions in this research field are investigated. The first part of this volume presents several new results in the classical Taylor--Couette system covering diverse theoretical, experimental and numerical work on bifurcation theory, influence of boundary conditions, counter-rotating flows, spiral vortices and many others. The second part focuses on spherical Couette flows, including isothermal flows, thermal convective motion, as well as magnetohydrodynamics in spherical shells. The remaining parts are devoted to Goertler vortices, rotating annulus flows, as well as superfluid Couette flows. The present book will be of interest to all researchers and graduate students working actively in the field.

Spiral Symmetry

Author : Istv n Hargittai
ISBN : 9810206151
Genre : Mathematics
File Size : 26. 56 MB
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A collection of essays explores the aesthetic, graphic, literary, scientific, mathematical, and computer-related aspects of the spiral in nature and in the man-made world.

Heart S Vortex

Author : Ares Pasipoularides
ISBN : 1607950332
Genre : Medical
File Size : 70. 69 MB
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This outstanding resource provides a comprehensive guide to intracardiac blood flow phenomena and cardiac hemodynamics, including the developmental history, theoretical frameworks, computational fluid dynamics and practical applications for clinical cardiology, cardiac imaging and embryology. It is not a mere compilation of the most up-to-date scientific data and relevant concepts. Rather, it is an integrated educational means to developing pluridisciplinary background, knowledge and understanding. Such understanding allows an appreciation of the crucial, albeit heretofore generally unappreciated, importance of intracardiac blood flow phenomena in a host of multifaceted functional and morphogenetic cardiac adaptations. The book includes over 400 figures, which were prepared by the author and form a vital part of the pedagogy. It is organized in three parts. Part I, Fundamentals of Intracardiac Flows and Their Measurements Part II, Visualization of Intracardiac Blood Flows: Methodologies, Frameworks and Insights Part III contains an Appendix presenting technical aspects of the method of predetermined boundary motion, “PBM,†developed at Duke University by the author and his collaborators

Astrophysical Discs

Author : Jerry A. Sellwood
ISBN : UOM:39015042099823
Genre : Astronomy
File Size : 75. 73 MB
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Theory Of Concentrated Vortices

Author : S. V. Alekseenko
ISBN : 9783540733768
Genre : Technology & Engineering
File Size : 51. 42 MB
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This book presents comprehensive and authoritative coverage of the wide field of concentrated vortices observed in nature and technique. The methods for research of their kinematics and dynamics are considered. Special attention is paid to the flows with helical symmetry. The authors have described models of vortex structures used for interpretation of experimental data which serve as a ground for development of theoretical and numerical approaches to vortex investigation.

The Scientific Proceedings Of The Royal Dublin Society

Author : Royal Dublin Society
ISBN : UOM:39015077802547
Genre : Learned institutions and societies
File Size : 57. 82 MB
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Tubes Sheets And Singularities In Fluid Dynamics

Author : K. Bajer
ISBN : 9781402009808
Genre : Science
File Size : 68. 21 MB
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Modern experiments and numerical simulations show that the long-known coherent structures in turbulence take the form of elongated vortex tubes and vortex sheets. The evolution of vortex tubes may result in spiral structures which can be associated with the spectral power laws of turbulence. The mutual stretching of skewed vortex tubes, when they are close to each other, causes rapid growth of vorticity. Whether this process may or may not lead to a finite-time singularity is one of the famous open problems of fluid dynamics. This book contains the proceedings of the NATO ARW and IUTAM Symposium held in Zakopane, Poland, 2-7 September 2001. The papers presented, carefully reviewed by the International Scientific Committee, cover various aspects of the dynamics of vortex tubes and sheets and of their analogues in magnetohydrodynamics and in quantum turbulence. The book should be a useful reference for all researchers and students of modern fluid dynamics.

Three Dimensional Separated Flow Topology

Author : Jean Délery
ISBN : 9781118579886
Genre : Science
File Size : 57. 77 MB
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This book develops concepts and a methodology for a rationaldescription of the organization of three-dimensional flowsconsidering, in particular, the case where the flow is the place ofseparations. The descriptive analysis based on the critical pointtheory of Poincaré develops conventional but rather unfamiliarconsiderations from aerodynamicists, who face the understanding ofcomplex flows including multiple separation lines and vortices.These problems concern industrial sectors where aerodynamics playsa key role, such as aerospace, ground vehicles, buildings, etc. Contents 1. Skin Friction Lines Pattern and Critical Points. 2. Separation Streamsurfaces and Vortex Structures. 3. Separated Flow on a Body. 4. Vortex Wake of Wings and Slender Bodies. 5. Separation Induced by an Obstacle or a Blunt Body. 6. Reconsideration of the Two-Dimensional Separation. 7. Concluding Remarks. About the Authors Jean Délery is a Supaero (French National Higher School ofAeronautics and Space) engineer who has worked at Onera (Frenchnational aerospace research center) since 1964. He has participatedin several major French and European aerospace programs, is theauthor of many scientific publications, and has occupied variousteaching positions particularly at Supaero, the University ofVersailles-Saint-Quentin, Ecole polytechnique in France and“La Sapienza” University in Rome, Italy. He iscurrently emeritus adviser at Onera.

The Attainment Of Superior Physical Abilities

Author : Noel Huntley
ISBN : 9781599263106
Genre : Body, Mind & Spirit
File Size : 86. 44 MB
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Readers and students of this new science of physical training will be surprised to find that the mechanism of physical mobility is far more sophisticated than their education has taught them. Current science assumes that physical movements of the body/limbs of humans and animals are entirely governed by the central nervous system (and autonomic nervous system), in which nerve impulses are sent to the muscles, causing contraction and subsequent motion of the body parts. If this were the only mechanism present, the limbs would do little more than twitch; there would be no fine coordination, no control, and no ability to access the system (keep in control of the movements) while motion is occurring. The author, after 30 years of research has discovered that physical mobility (voluntary) is due to a dual system: 1) the central nervous system (CNS), and 2) an energy-field system. These two systems are synchronised perfectly. This energy-field system is a type of computer mechanism and is in fact nature's quantum computer system, an understanding of which is much sought within most scientific disciplines. We are normally only aware of sensing muscular activity, but if we, say, imagine moving the arm (no muscular activity), we will feel kinaesthetically the motion. This is the sensation of information within nature's computer system. (The neurophysiologist will tell you it is the physiological kinaesthetic sense around the muscles and joints, but in fact the latter accounts for only a tiny fraction of the overall sense.) What must be recognised then is that there are two entirely different systems of training for these mechanisms of body motion: (1) The brain/body mechanism, and (2) the quantum computer system. Everyone is familiar with physical training, which comes under (1). There is adequate knowledge and methods available for this activity and we shall not encroach on this field except to present a summary covered in the chapters on physiology and psychology and, in particular, as they relate to the overall training. The other mechanism, nature's computer system, consists of an immense complex of energy fields (quantum/scalar/electromagnetic fields) around and within the body and limbs, which are, of course, invisible to the naked eye, and not detectable by existing scientific instruments, which can't handle higher-frequency scalar waves. This system requires a very different kind of training for development as we shall come to understand later in the book. Now the reader who does not wish to acquire any knowledge on this subject but merely wants to concentrate on training can go directly to the exercises and procedures given in Chapter 10. Nevertheless, it should be pointed out that any understanding at all will be beneficial to progress. These new processes are not like those of regular physical training. With ordinary physical exercises, improvement may occur after only a day or so, but which can also be lost as rapidly as gained with a lapse in training. With this new system, however, although gains will be much slower, or not readily noticeable, they nevertheless will be permanent. Just as one never forgets how to ride a bicycle once learned, these mechanisms do not deteriorate or lose their information. If, however, the reader does wish to acquire some understanding, then elementary theory is given in the main text of this book, in particular, there is an introduction in the chapter on training in case the reader wishes to go immediately to the training. But for the serious science student the appendices give some of the fundamental (and difficult) theory of this vast subject, which generalises to all other phenomena, for example, we now have a new basis with which to evaluate how insects fly or how for instance a humming bird beats its wings at such an enormous rate, creating a huge inertial problem for mainstream science explanations. Note that there is a chapter on instrumental techniqu

Vorticity And Vortex Dynamics

Author : Jie-Zhi Wu
ISBN : 9783540290285
Genre : Technology & Engineering
File Size : 75. 57 MB
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This book is a comprehensive and intensive monograph for scientists, engineers and applied mathematicians, as well as graduate students in fluid dynamics. It starts with a brief review of fundamentals of fluid dynamics, with an innovative emphasis on the intrinsic orthogonal decomposition of fluid dynamics process. This is followed by vortex dynamics dealing with the motion, interaction, stability, and breakdown of various vortices. Typical vortex structures are analyzed in laminar, translational, and turbulent flows, including stratified and rotational fluids. In another chapter vortical flow management is presented, such as diagnostics and control. Physical understanding of vortical flow phenomena and mechanisms is the first priority throughout the book. To make the book self-contained, some mathematical background is briefly presented in the main text, but major prerequisites are systematically given in appendices.

Perform Or Else

Author : Jon McKenzie
ISBN : 9781134538614
Genre : Performing Arts
File Size : 69. 59 MB
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'Performance' has become one of the key terms for the new century. But what do we mean by 'performance'? In today's world it can refer to experimental art; productivity in the workplace; and the functionality of technological systems. Do these disparate fields bear any relation to each other? In Perform or Else Jon McKenzie asserts that there is a relationship cultural, organisational, and technological performance. In this theoretical tour de force McKenzie demonstrates that all three paradigms operate together to create powerful and contradictory pressures to 'perform...or else'. This is an urgent and important intervention in contemporary critical thinking. It will profoundly shape our understanding of twenty-first century structures of power and knowledge.

Essential As Geography

Author : Simon Ross
ISBN : 0748751750
Genre : Geography
File Size : 82. 62 MB
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Essential AS Geography provides comprehensive coverage of the range of subjects and themes for AS Geography. The book has been designed to smooth the transition between GCSE and A Level standard and rapidly instil confidence in the first year student, providing the means to achieve examination success.

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