Fluid Dynamics and Dynamos in Astrophysics and Geophysics

Informationen zum Autor Andrew M. Soward, Christopher A. Jones, David W. Hughes, Nigel O. Weiss Klappentext 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 galactic magnetic fields; and (3) the geodynamo! planetary magnetic fields! and associated experiments. This book grew out of a special conference sponsored by the London Mathematical Society with the support of EPSRC that brought together leading researchers in all of these areas to exchange ideas and review the status of the field. The many interesting problems addressed in this volume concern: Zusammenfassung Reviews the status of the field of astrophysical fluid dynamics. This book includes such topics as Magnetohydrodynamics (MHD), including MHD turbulence, the dynamo problem, and some laboratory experiments. It illustrates the symbiotic relation between theory and observation. Inhaltsverzeichnis ACCRETION DISCS! Gordon I. OgilvieClassical theory of accretion discsAngular momentum transportContinuum celestial mechanicsDISCS WITH MHD TURBULENCE AND THEIR RESPONSE TO ORBITING PLANETS! John C.B. Papaloizou and Richard P. NelsonSet up of initial modelsSimulation resultsDiscussionMIXING AT THE SURFACE OF WHITE DWARF STARS! R. Rosner and A. AlexakisPrevious work on mixingAn alternative: mixing at boundaries by "wind"-driven resonant modesConclusionsPULSAR MAGNETOSPHERES! Leon MestelBasic electrodynamicsModels with pair productionLive modelsThe S(P) relationThe inner domainComputational resultsAlternative modelsMagnetospheric gapsMAGNETIC FIELDS IN GALAXIES! Ellen G. ZweibelGalactic structureObservations of Galactic magnetic fieldsGalaxy formation and magnetogenesisBuilding blocks of Galactic magnetic fieldsSummary and outlookSELF-CONSISTENT MEAN FIELD ELECTRODYNAMICS IN TWO AND THREE DIMENSIONS! P H. Diamond! D. W. Hughes and Eun-jin KimTurbulent diffusion of magnetic fieldsThe generation of magnetic fieldsMomentum and flux transport in 2D MHDConcluding remarksTHE SOLAR TACHOCLINE: FORMATION! STABILITY AND ITS ROLE IN THE SOLAR DYNAMO! S. M. TobiasProperties of the solar tachoclineWhy is the solar tachocline so thin?Instabilities of the solar tachoclineThe tachocline and the solar dynamoDiscussion and conclusionMAGNETOCONVECTION! M.R.E. ProctorThe induction equation and the Lorentz forceBoussinesq magnetoconvection in a vertical fieldNonlinear Boussinesq magnetoconvectionStrong magnetic fieldsShearing instabilities and streaming flowsConvection in extended regionsEffects of stratificationDiscussionALFVÉN WAVES WITHIN THE EARTH'S CORE! D. Jault and G. L´egautPropagation of Alfv´en waves within an entirelyfluid spherical bodyTopographical effects at the CMBInfluence of a conducting inner coreConcluding remarksTURBULENCE MODELS AND PLANE LAYER DYNAMOS! C.A. Jones and P.H. RobertsBackground to the LANS o-modelsModel description and governing equationsThe hyperdiffusive and the LANS o-modelsSubgrid scale boundary conditionsLinear theoryNumerical simulationsConclusionsPLANETARY AND STELLAR DYNAMOS: CHALLENGES FOR NEXT GENERATION MODELS! Gary A. GlatzmaierCurrent 3D geodynamo simulationsLaminar approximations of turbulent flows2D Turbulent magnetoconvection simulationsDiscussionCONVECTION IN ROTATING SPHERICAL FLUID SHELLS AND ITS DYNAMO STATES! F.H. Busse and R. SimitevMathematical formulation of the problemConvection in rotating spherical shellsEvolution of convection columns at small Prandtl numbersConvection at very small Prandtl numbersConvection driven dynamos at moderate Prandtl numbersConvection driven dynamos in low Prandtl number fluidsTorsional oscillationsOscillating dipolar dynamosDiscussion and outlookLABORATORY EXPERIMENTS...

Autorentext
Andrew M. Soward, Christopher A. Jones, David W. Hughes, Nigel O. Weiss

Klappentext
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 galactic magnetic fields; and (3) the geodynamo, planetary magnetic fields, and associated experiments. This book grew out of a special conference sponsored by the London Mathematical Society with the support of EPSRC that brought together leading researchers in all of these areas to exchange ideas and review the status of the field.
The many interesting problems addressed in this volume concern:

Zusammenfassung
Reviews the status of the field of astrophysical fluid dynamics. This book includes such topics as Magnetohydrodynamics (MHD), including MHD turbulence, the dynamo problem, and some laboratory experiments. It illustrates the symbiotic relation between theory and observation.

Inhalt
Accretion Discs. Discs with Mhd Turbulence and Their Response to Orbiting Planets. Mixing at the Surface of White Dwarf Stars. Pulsar Magnetospheres. Magnetic Fields in Galaxies. Self-Consistent Mean Field Electrodynamics in Two and Three Dimensions. The Solar Tachocline: Formation, Stability and Its Role in the Solar Dynamo. Magnetoconvection. Alfvén Waves Within the Earth's Core. Turbulence Models and Plane Layer Dynamos. Planetary and Stellar Dynamos: Challenges for Next Generation Models. Convection in Rotating Spherical Fluid Shells and Its Dynamo States. Laboratory Experiments on Liquid Metal Dynamos and Liquid Metal Mhd Turbulence. Index.

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