Advances in Nonlinear Dynamos Book

Advances in Nonlinear Dynamos

  • Author : Antonio Ferriz-Mas
  • Publisher : CRC Press
  • Release Date : 2019-07-17
  • Genre: Science
  • Pages : 416
  • ISBN 10 : 0203493133

Advances in Nonlinear Dynamos Excerpt :

Nonlinear dynamo theory is central to understanding the magnetic structures of planets, stars and galaxies. In chapters contributed by some of the leading scientists in the field, this text explores some of the recent advances in the field. Both kinetic and dynamic approaches to the subject are considered, including fast dynamos, topological methods in dynamo theory, physics of the solar cycle and the fundamentals of mean field dynamo. Advances in Nonlinear Dynamos is ideal for graduate students and researchers in theoretical astrophysics and applied mathematics, particularly those interested in cosmic magnetism and related topics, such as turbulence, convection, and more general nonlinear physics.

Lectures on Solar and Planetary Dynamos Book

Lectures on Solar and Planetary Dynamos

  • Author : M. R. E. Proctor
  • Publisher : Cambridge University Press
  • Release Date : 1994-12-08
  • Genre: Mathematics
  • Pages : 396
  • ISBN 10 : 0521467047

Lectures on Solar and Planetary Dynamos Excerpt :

Comprised of lectures for an intensive course held at the Newton Institute in Cambridge, as part of a NATO Advanced Study Institute, the topics covered within this volume include planetary and solar dynamos, fast dynamos, and the use of symmetry principles to derive evolution equations.

Dynamos Book


  • Author : Anonim
  • Publisher : Elsevier
  • Release Date : 2011-07-29
  • Genre: Science
  • Pages : 496
  • ISBN 10 : 9780080560533

Dynamos Excerpt :

Dynamos is a collection of lectures given in July 2007 at the Les Houches Summer School on "Dynamos". Provides a pedagogical introduction to topics in Dynamos Addresses each topic from the basis to the most recent developments Covers the lectures by internationally-renowned and leading experts

Mathematical Aspects of Natural Dynamos Book
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Mathematical Aspects of Natural Dynamos

  • Author : Emmanuel Dormy
  • Publisher : CRC Press
  • Release Date : 2007-06-11
  • Genre: Science
  • Pages : 504
  • ISBN 10 : 9781420055269

Mathematical Aspects of Natural Dynamos Excerpt :

Although the origin of Earth's and other celestial bodies' magnetic fields remains unknown, we do know that the motion of electrically conducting fluids generates and maintains these fields, forming the basis of magnetohydrodynamics (MHD) and, to a larger extent, dynamo theory. Answering the need for a comprehensive, interdisciplinary introduction to this area, Mathematical Aspects of Natural Dynamos provides a foundation in dynamo theory before moving on to modeling aspects of natural dynamos. Bringing together eminent international contributors, the book first introduces governing equations, outlines the kinematic dynamo theory, covers nonlinear effects, including amplitude saturation and polarity reversals, and discusses fluid dynamics. After establishing this base, the book describes the Earth's magnetic field and the current understanding of its characteristics. Subsequent chapters examine other planets in our solar system and the magnetic field of stars, including the sun. The book also addresses dynamo action on the large scale of galaxies, presents modeling experiments of natural dynamos, and speculates about future research directions. After reading this well-illustrated, thorough, and unified exploration, you will be well prepared to embark on your own journey through this fascinating area of research.

Solar and Stellar Dynamos Book

Solar and Stellar Dynamos

  • Author : Paul Charbonneau
  • Publisher : Springer
  • Release Date : 2012-11-06
  • Genre: Science
  • Pages : 240
  • ISBN 10 : 9783642320934

Solar and Stellar Dynamos Excerpt :

Astrophysical dynamos are at the heart of cosmic magnetic fields of a wide range of scales, from planets and stars to entire galaxies. This book presents a thorough, step-by-step introduction to solar and stellar dynamos. Looking first at the ultimate origin of cosmic seed magnetic fields, the antagonists of field amplification are next considered: resistive decay, flux expulsion, and flows ruled out by anti-dynamo theorems. Two kinematic flows that can act as dynamos are then studied: the Roberts cell and the CP-flow. Mean-field electrodynamics and derivation of the mean-field dynamo equations lead to the alpha Omega-dynamo, the flux transport dynamo, and dynamos based on the Babcock-Leighton mechanism. Alternatives to the mean-field theory are also presented, as are global MHD dynamo simulations. Fluctuations and grand minima in the solar cycle are discussed in terms of dynamo modulations through stochastic forcing and nonlinear effects. The book concludes with an overview of the major challenges in understanding stellar magnetic fields and their evolution in terms of various dynamo models, global MHD simulations, and fossil fields. Each chapter is accompanied by an annotated bibliography, guiding the readers to the relevant technical literature, which may lead them to carry out their own research in the field of dynamo theory.

Self Exciting Fluid Dynamos Book

Self Exciting Fluid Dynamos

  • Author : Keith Moffatt
  • Publisher : Cambridge University Press
  • Release Date : 2019-04-25
  • Genre: Mathematics
  • Pages : 539
  • ISBN 10 : 9781107065871

Self Exciting Fluid Dynamos Excerpt :

Treats the origin of magnetic fields in planets, stars and galaxies, and the manner of their evolution over time.

Fluid Dynamics and Dynamos in Astrophysics and Geophysics Book

Fluid Dynamics and Dynamos in Astrophysics and Geophysics

  • Author : Andrew M. Soward
  • Publisher : CRC Press
  • Release Date : 2005-03-16
  • Genre: Science
  • Pages : 464
  • ISBN 10 : 9780203017692

Fluid Dynamics and Dynamos in Astrophysics and Geophysics Excerpt :

The increasing power of computer resources along with great improvements in observational data in recent years have led to some remarkable and rapid advances in astrophysical fluid dynamics. The subject spans three distinct but overlapping communities whose interests focus on (1) accretion discs and high-energy astrophysics; (2) solar, stellar, and

Small Dynamos And How To Make Them   Practical Instruction On Building A Variety Of Machines Including Electric Motors Book

Small Dynamos And How To Make Them Practical Instruction On Building A Variety Of Machines Including Electric Motors

  • Author : Various Authors
  • Publisher : Read Books Ltd
  • Release Date : 2013-04-16
  • Genre: Technology & Engineering
  • Pages : 158
  • ISBN 10 : 9781473390287

Small Dynamos And How To Make Them Practical Instruction On Building A Variety Of Machines Including Electric Motors Excerpt :

This practical engineering handbook is in its complete and unabridged original form, extensively illustrated and full of instruction that is as useful and practical today as it was when originally published. Contents include - How A Dynamo Works, General Considerations - Simple Cycle-Lighting Dynamo - Hand-Driven 20-Watt Dynamo - Two Minature Dynamos - Direct-Coupled Dynamo And Water Motor - Three Small Electric Motors - 6-Volt Traction Motor - 60-Watt Simplex Dynamo Or Motor - Winding Data - Faults And Remedies - Various Dynamos And Motors. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

Spheromaks Book


  • Author : Paul M Bellan
  • Publisher : World Scientific
  • Release Date : 2000-01-22
  • Genre: Science
  • Pages : 356
  • ISBN 10 : 9781783262199

Spheromaks Excerpt :

Spheromaks are easily formed, self-organized magnetized plasma configurations that have intrigued plasma physicists for over two decades. Sometimes called magnetic vortices, magnetic smoke rings, or plasmoids, spheromaks first attracted attention as a possible controlled thermonuclear plasma confinement scheme, but are now known to have many other applications. This book begins with a review of the basic concepts of magnetohydrodynamics and toroidal magnetic configurations, then provides a detailed exposition of the 3D topological concepts underlying spheromak physics, namely magnetic helicity, Taylor relaxation, force-free equilibria, and tilt stability. It then examines spheromak formation techniques, driven and isolated configurations, dynamo concepts, practical experimental issues, diagnostics, and a number of applications. The book concludes by showing how spheromak ideas are closely related to the physics of solar prominences and interplanetary magnetic clouds. Contents: Basic ConceptsMagnetic HelicityRelaxation of an Isolated Configuration to the Taylor StateRelaxation in Driven ConfigurationsThe MHD Energy Principle, Helicity, and Taylor StatesSurvey of Spheromak Formation SchemesClassification of Regimes: An Imperfect Analogy to ThermodynamicsAnalysis of Isolated Cylindrical SpheromaksThe Role of the WallAnalysis of Driven Spheromaks: Strong CouplingHelicity Flow and DynamosConfinement and Transport in SpheromaksSome Important Practical IssuesBasic Diagnostics for SpheromaksApplications of SpheromaksSolar and Space Phenomena Related to Spheromaks Readership: Graduate students and advanced undergraduates who have taken a course in plasma magnetohydrodynamics, laboratory plasma physicists, solar & space plasma physicists, and scientists interested in the topological dynamics of self-organizing configurations. Keywords:Spheromak;Magnetohydrodynamics (MHD);Plasma;Self-Organization;Magnetic Helicity;Fusion;Solar;Coronal;Tokamak;Astrophysics;Relaxation;Taylor;Rev

Dynamo and Dynamics  a Mathematical Challenge Book

Dynamo and Dynamics a Mathematical Challenge

  • Author : Pascal Chossat
  • Publisher : Springer Science & Business Media
  • Release Date : 2001-07-31
  • Genre: Science
  • Pages : 418
  • ISBN 10 : 0792370694

Dynamo and Dynamics a Mathematical Challenge Excerpt :

This book contains the lectures given at the workshop "Dynamo and dynamics, a mathematical challenge" held in Cargese from August 21 to 26, 2000. The workshop differed from most previous conferences on the dynamo effect in two important respects. First, it was at this international conference that the experimental observation of homogeneous fluid dynamos was first reported. Second, the conference gathered scientists from very different fields, thus showing that thepynamo problem has become an interdisciplinary subject involving not only astrophysicists and geophysicists, but also scientists working in dynamical systems theory, hydrodynamics, and numerical simulation, as well as several groups in experimental physics. This book thus reports important results on various dynamo studies in these different contexts: - Decades after the discovery of the first analytic examples of laminar fluid dynamos, the self-generation of a magnetic field by a flow ofliquid sodium has been reported by the Karlsruhe and Riga groups. Although there were no doubts concerning the self generation by the laminar Roberts-type or Ponomarenko-type flows that were used, these experiments have raised interesting questions about the influence of the turbulent fluctuations on the dynamo threshold and on the saturation level of the magnetic field.

Stretch  Twist  Fold  The Fast Dynamo Book

Stretch Twist Fold The Fast Dynamo

  • Author : Stephen Childress
  • Publisher : Springer Science & Business Media
  • Release Date : 2008-09-11
  • Genre: Science
  • Pages : 408
  • ISBN 10 : 9783540447788

Stretch Twist Fold The Fast Dynamo Excerpt :

The study of the magnetic fields of the Earth and Sun, as well as those of other planets, stars, and galaxies, has a long history and a rich and varied literature, including in recent years a number of review articles and books dedicated to the dynamo theories of these fields. Against this background of work, some explanation of the scope and purpose of the present monograph, and of the presentation and organization of the material, is therefore needed. Dynamo theory offers an explanation of natural magnetism as a phenomenon of magnetohydrodynamics (MHD), the dynamics governing the evolution and interaction of motions of an electrically conducting fluid and electromagnetic fields. A natural starting point for a dynamo theory assumes the fluid motion to be a given vector field, without regard for the origin of the forces which drive it. The resulting kinematic dynamo theory is, in the non-relativistic case, a linear advection-diffusion problem for the magnetic field. This kinematic theory, while far simpler than its magnetohydrodynamic counterpart, remains a formidable analytical problem since the interesting solutions lack the easiest symmetries. Much ofthe research has focused on the simplest acceptable flows and especially on cases where the smoothing effect of diffusion can be exploited. A close analog is the advection and diffusion of a scalar field by laminar flows, the diffusion being measured by an appropriate Peclet number. This work has succeeded in establishing dynamo action as an attractive candidate for astrophysical magnetism.

The Dynamo Book

The Dynamo

  • Author : Charles Caesar Hawkins
  • Publisher : Unknown
  • Release Date : 1903
  • Genre: Electric generators
  • Pages : 925
  • ISBN 10 : WISC:89089712137

The Dynamo Excerpt :

Dynamo Electricity Machinery Book

Dynamo Electricity Machinery

  • Author : Silvanus Phillips Thompson
  • Publisher : Cambridge University Press
  • Release Date : 2011-05-19
  • Genre: Technology & Engineering
  • Pages : 692
  • ISBN 10 : 9781108026871

Dynamo Electricity Machinery Excerpt :

A classic 1880s guide to the many types of dynamo used to generate electricity, and the theory underlying their function.