TITLE

Applications of the Miller equilibrium to extend tokamak computational models

AUTHOR(S)
Stacey, W. M.
PUB. DATE
December 2008
SOURCE
Physics of Plasmas;Dec2008, Vol. 15 Issue 12, p122505
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An analytical model for the equilibrium flux surface geometry, widely known as the Miller equilibrium model, has been exploited to improve a variety of simplified tokamak computation models that incorporate an approximate flux surface geometry. Also discussed are improved models for an effective unelongated toroidal plasma representation of elongated flux surfaces; mapping temperature (and density) gradients measured at one poloidal location to other poloidal locations and to an average gradient over the flux surface; interpreting experimental heat diffusivities from local temperature gradients and average conductive heat fluxes; calculating the poloidal distribution of radial conductive heat fluxes; and evaluating the gyroviscous angular momentum transport rate.
ACCESSION #
35982571

 

Related Articles

  • Nonlinear periodic solutions for isothermal magnetostatic atmospheres. Khater, A. H.; Callebaut, D. K.; Kamel, E. S. // Physics of Plasmas;Dec2008, Vol. 15 Issue 12, p122903 

    Magnetohydrodynamic equilibria for a plasma in a gravitational field are investigated analytically. For equilibria with one ignorable spatial coordinate, the equations reduce to a single nonlinear elliptic equation for the magnetic potential A, known as the Grad–Shafranov equation....

  • The Black Hole Information Paradox and the Collapse of the Wave Function. Okon, Elias; Sudarsky, Daniel // Foundations of Physics;Apr2015, Vol. 45 Issue 4, p461 

    The black hole information paradox arises from an apparent conflict between the Hawking black hole radiation and the fact that time evolution in quantum mechanics is unitary. The trouble is that while the former suggests that information of a system falling into a black hole disappears, the...

  • The convergence of analytic high-β equilibrium in a finite aspect ratio tokamak. Neches, R. Y.; Cowley, S. C.; Gourdain, P. A.; Leboeuf, J. N. // Physics of Plasmas;Dec2008, Vol. 15 Issue 12, p122504 

    The characteristics of near-unity-β equilibria are investigated with two codes. CUBE is a multigrid Grad–Shafranov solver [Gourdain et al., J. Comput. Phys. 216, 275 (2006)], and Ophidian was written to compute solutions using analytic unity-β equilibria [Cowley et al., Phys. Fluids...

  • Angular momentum and space-time hyperboloids. Lozada, Abraham // Journal of Mathematical Physics;Oct95, Vol. 36 Issue 10, p5540 

    Discusses that field momentum and angular momentum in an electromagnetic field are well defined even for charged sources. Situations where infrared divergences are a problem for defining angular momentum; How the angular momentum is not well defined for charged sources if the angular momentum...

  • Irregularities in the Earth’s rotation and the overall angular momentum of the atmosphere. Akulenko, L. D.; Markov, Yu. G.; Perepelkin, V. V.; Rykhlova, L. V. // Astronomy Reports;Mar2010, Vol. 54 Issue 3, p260 

    Methods of celestial mechanics are used to refine a mathematical model for irregularity in the axial rotation of the Earth proposed earlier. This refinement applies corrections (residuals) introduced by perturbations of zonal tides. We examine intraday and near-diurnal variations in the...

  • New energy-momentum tensor in relativistic gravitation theory. Zhelnorovich, V. A. // Russian Physics Journal;Apr2006, Vol. 49 Issue 4, p402 

    Expressions for a new canonical energy-momentum tensor and an internal angular momentum of the gravitational field are derived in the context of bimetric relativistic gravitation theory based on the variational principle. A system of relations for the determining parameters of the gravitational...

  • Stability of the planar full 2-body problem. D. Scheeres // Celestial Mechanics & Dynamical Astronomy;Jun2009, Vol. 104 Issue 1/2, p103 

    Abstract  The stability of the Full Two-Body Problem is studied in the case where both bodies are non-spherical, but are restricted to planar motion. The mutual potential is expanded up to second order in the mass moments, yielding a highly symmetric yet non-trivial dynamical system. For...

  • Gravitational Perturbation of Garfinkle-Horowitz-Strominger Dilaton Black Hole and Quasinormal Modes. Kai Lin // International Journal of Theoretical Physics;Nov2010, Vol. 49 Issue 11, p2786 

    We research gravitational perturbation of Garfinkle-Horowitz-Strominger dilaton black hole and its quasinormal modes by using WKB approach proposed by Schutz, Will, Iyer and Konoplya. The quasinormal frequency with different angular momentum l is calculated in this paper. Our results show that,...

  • Perturbed Accretion Disk Around the Massive Black Hole. Dönmez, O. // AIP Conference Proceedings;2007, Vol. 899 Issue 1, p143 

    In this paper, perturbations of an accretion disk by a star orbiting around a massive black hole are studied. We report on a numerical experiment, which has been carried out by using a parallel-machine code originally developed by Ref.[1]. An initially steady state accretion disk near a...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics