Author: Michael Alan BeerPublisher:
ISBN:
Category : Computer simulation
Languages : en
Pages : 13
Book Description
Developments in the Gyrofluid Approach to Tokamak Turbulence Simulations
Author: Michael Alan BeerPublisher:
ISBN:
Category : Computer simulation
Languages : en
Pages : 13
Book Description
Developments in the Gyrofluid Approach to Tokamak Turbulence Simulations
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
A status report is given on recent developments in the gyrofluid approach to simulating tokamak turbulence. G̀̀yrofluid ̀̀(or g̀̀yro-Landau fluid)̀̀ equations attempt to extend the range of validity of fluid equations to a more collisionless regime typical of tokamaks, by developing fluid models of important kinetic effects such as Landau-damping and gyro-orbit averaging. The fluid moments approach should converge if enough moments are kept, though this may require a large number of moments for some processes. Toroidal gyrofluid equations have been extended from 4 to 6 moments, and to include the ? ∇B magnetic mirroring force. An efficient field-line coordinate system for toroidal turbulence simulations (useful for both particle and fluid simulations) is presented. Nonlinear 3-D simulations of toroidal ITG-driven turbulence indicate that turbulence-generated sheared flows play. an important role in the development and saturation of the turbulence. There is a strong enhancement of the flows when the electrons are assumed adiabatic on each flux surface, which is partially offset by toroidal drift effects which reduce the flows.
Toroidal Gyrofluid Equations for Simulations of Tokamak Turbulence
Author: Michael Alan BeerPublisher:
ISBN:
Category : Transport theory
Languages : en
Pages : 55
Book Description
Toroidal Gyrofluid Equations for Simulations of Tokamak Turbulence
Author: Michael Alan BeerPublisher:
ISBN:
Category : Transport theory
Languages : en
Pages : 55
Book Description
New Ideas in Tokamak Confinement
Author: Marshall N. RosenbluthPublisher: Springer Science & Business Media
ISBN: 9781563961311
Category : Science
Languages : en
Pages : 514
Book Description
Market: Scientists and students involved in thermonuclear fusion research. Thermonuclear fusion research using the confinement device tokamak represents one of the most prominent science projects in the second half of the 20th century. International Tokamak Community is now committing significant effort and funds to experiments with burning plasma, hot and dense enough to produce significant nuclear fusion reactions. The methods used to enhance tokamak performance have a profound and immediate effect on machine design. This book provides an up-to-date account of research in tokamak fusion and puts forward innovative ideas in confinement physics.
Gyrofluid Theory and Simulation of Electromagnetic Turbulence and Transport in Tokamak Plasmas
Author: Philip Benjamin SnyderPublisher:
ISBN:
Category :
Languages : en
Pages : 464
Book Description
Frontiers in Turbulence and Coherent Structures
Author: J. P. DenierPublisher: World Scientific
ISBN: 9812703934
Category : Science
Languages : en
Pages : 501
Book Description
The Chickasaw Nation, an American Indian nation headquartered in southeastern Oklahoma, entered into a period of substantial growth in the late 1980s. Following its successful reorganization and expansion, which was enabled by federal policies for tribal self-determination, the Nation pursued gaming and other industries to affect economic growth. From 1987 to 2009 the Nation's budget increased exponentially as tribal investments produced increasingly large revenues for a growing Chickasaw population. Coincident to this growth, the Chickasaw Nation began acquiring and creating museums and heritage properties to interpret their own history, heritage, and culture through diverse exhibitionary representations. By 2009, the Chickasaw Nation directed representation of itself at five museum and heritage properties throughout its historic boundaries. Josh Gorman examines the history of these sites and argues that the Chickasaw Nation is using museums and heritage sites as places to define itself as a coherent and legitimate contemporary Indian nation. In doing so, they are necessarily engaging with the shifting historiographical paradigms as well as changing articulations of how museums function and what they represent. The roles of the Chickasaw Nation's museums and heritage sites in defining and creating discursive representations of sovereignty are examined within their historicized local contexts. The work describes the museum exhibitions' dialogue with the historiography of the Chickasaw Nation, the literature of new museum studies, and the indigenous exhibitionary grammars emerging from indigenous museums throughout the United States and the world.
Turbulent Transport In Magnetized Plasmas (Second Edition)
Author: C Wendell Horton, JrPublisher: #N/A
ISBN: 9813225904
Category : Science
Languages : en
Pages : 522
Book Description
For a few seconds with large machines, scientists and engineers have now created the fusion power of the stars in the laboratory and at the same time find the rich range of complex turbulent electromagnetic waves that transport the plasma confinement systems. The turbulent transport mechanisms created in the laboratory are explained in detail in the second edition of 'Turbulent Transport in Magnetized Plasmas' by Professor Horton.The principles and properties of the major plasma confinement machines are explored with basic physics to the extent currently understood. For the observational laws that are not understood — the empirical confinement laws — offering challenges to the next generation of plasma students and researchers — are explained in detail. An example, is the confinement regime — called the 'I-mode' — currently a hot topic — is explored.Numerous important problems and puzzles for the next generation of plasma scientists are explained. There is growing demand for new simulation codes utilizing the massively parallel computers with MPI and GPU methods. When the 20 billion dollar ITER machine is tested in the 2020ies, new theories and faster/smarter computer simulations running in near real-time control systems will be used to control the burning hydrogen plasmas.
Frontiers In Turbulence And Coherent Structures - Proceedings Of The Cosnet/csiro Workshop On Turbulence And Coherent Structures In Fluids, Plasmas And Nonlinear Media
Author: Jim DenierPublisher: World Scientific
ISBN: 9814476455
Category : Science
Languages : en
Pages : 501
Book Description
This book is based on the proceedings of the COSNet/CSIRO Workshop on Turbulence and Coherent Structures held at the Australian National University in Canberra in January 2006.It codifies recent developments in our understanding of the dynamics and statistical dynamics of turbulence and coherent structures in fluid mechanics, atmospheric and oceanic dynamics, plasma physics, and dynamical systems theory. It brings together articles by internationally acclaimed researchers from around the world including Dijkstra (Utrecht), Holmes (Princeton), Jimenez (UPM and Stanford), Krommes (Princeton), McComb (Edinburgh), Chong (Melbourne), Dewar (ANU), Watmuff (RMIT) and Frederiksen (CSIRO).The book will prove a useful resource for researchers as well as providing an excellent reference for graduate students working in this frontier area.
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