2 edition of **Neoclassical transport theory in rotating axisymmetric plasmas** found in the catalog.

Neoclassical transport theory in rotating axisymmetric plasmas

Steven C. Cowley

- 315 Want to read
- 22 Currently reading

Published
**1986**
by Culham Laboratory in Abingdon, Oxfordshire
.

Written in English

- Plasma engineering.

**Edition Notes**

Statement | S.C. Cowley, C.M. Bishop. |

Series | CLM-M ;vno. 109, Memorandum (Culham Laboratory) ;no. 109 |

Contributions | Bishop, C. M., Culham Laboratory. |

The Physical Object | |
---|---|

Pagination | 24 p. |

Number of Pages | 24 |

ID Numbers | |

Open Library | OL19461522M |

dally rotating axisymmetric system, is useful to express the anomalous transport and the resultant anomalous entropy production. It is emphasized that, in the rotating plasma, the shear of the toroidal ﬂow or the radial electric ﬁeld shear enters both the neoclassical and anomalous transport equa-. 1 Plasma and Space Science Center and Department of Physics, National Cheng Kung University, Tainan, Taiwan , Republic of China. 2 Engineering Physics Department, University of Wisconsin, Madison, WI , USA. 3 Department of Applied Physics and Applied Mathematics, Columbia University New York, NY , USA. 4 General Atomics, San Diego, CA , USA.

A generalized global particle-in-cell (PIC) code has been developed to systematically study neoclassical physics and equilibrium electric field dynami. Neoclassical transport coefficients for general axisymmetric equilibria in the banana regime Angioni, C. ; Sauter, O. Using the standard approach of neoclassical theory, a set of relatively simple kinetic equations has been obtained, suited for an implementation in a numerical code to compute a related set of distribution functions.

the framework of the neoclassical theory. A comprehensive review of the neoclassical transport theory has been published by Hinton and Hazeltine [5]. The plasma of solar loops, in some cases, is collisional with high longitudinal particle ﬂow velocities, not far from the plasma sound speed. The ratio of the plasma pressure. The following sections are included: * Introduction * Quasineutrality condition * Diffusion in fully ionized magnetized plasma and automatic ambipolarity * Toroidal geometry and neoclassical diffusion * Diffusion and ambipolarity in toroidal plasmas * Ambipolarity and equilibrium poloidal rotation * Ambipolarity paradox and damping of poloidal rotation * Neoclassical plasma inertia.

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The neoclassical theory of ion transport in rotating axisymmetric plasmas is formulated. The flow speed is allowed to be of the order of the ion thermal speed. It is shown that the ion distribution The neoclassical theory of ion transport in rotating axisymmetric plasmas is by: Abstract Neoclassical transport processes of electrons and ions are investigated in detail for toroidally rotating axisymmetric plasmas with large flow velocities on the order of the ion thermal by: The neoclassical theory of ion transport in rotating axisymmetric plasmas is formulated.

The flow speed is allowed to be of the order of the ion thermal by: Neoclassical transport processes of electrons and ions are investigated in detail for toroidally rotating axisymmetric plasmas with large flow velocities on the order of the ion thermal speed.

The Onsager relations for the flow-dependent neoclassical transport coefficients are derived from the symmetry properties of the drift kinetic equation.

We examine the relationships between the poloidal, toroidal and parallel rotation velocities for typical plasma conditions in existing tokamak experiments. The radial force balance, neoclassical solution to the poloidal flow from the parallel force balance, and anomalous toroidal rotation axe.

Abstract Neoclassical transport processes of electrons and ions are investigated in detail for toroidally rotating axisymmetric plasmas with large flow velocities on the order of the ion thermal.

Neoclassical transport processes of electrons and ions are investigated in detail for toroidally rotating axisymmetric plasmas with large flow velocities on the order of the ion thermal speed.

The Neoclassical Transport Model is one of the pillars of the physics of magnetically confined plasmas. [1] [2] It provides a model for the transport of particles, momentum, and heat due to Coulomb collisions in confined plasmas in complex magnetic geometries, assuming that the plasma is in a quiescent state.

A reduced gyrokinetic equation is derived for a multispecies toroidal axisymmetric plasma with arbitrary toroidal differential rotation speeds and in the presence of a finite induced electric field.

The kinetic equation obtained, extending previous results obtained by Hinton and Wong [Phys. Flu ()] and by Catto et al. [Phys. Flu ()], has a form suited for. Sugama's research works with 3, citations and 2, reads, including: Reduced models of turbulent transport in helical plasmas including effects of zonal flows and trapped electrons.

Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for the “ Neoclassical transport in a rotating impure plasma,” Phys.

Plasmas 5(4 “ Neoclassical ion transport in rotating axisymmetric plasmas. Plasma Physics (), vol. 43, part 3, pp. ^85 Printed in Great Britain BOOK REVIEW 'Transport Processes in Plasmas' Vol. 1: Classical Transport; Vol. 2: Neoclassical Transport, R. Balescu, North-Holland Press, Transport theory is one of the most important disciplines in plasma.

The neoclassical theory of ion transport in rotating axisymmetric plasmas is formulated. The flow speed is allowed to be of the order of the ion thermal speed. It is shown that the ion distribution function becomes Maxwellian, with temperature uniform on a magnetic surface, and the poloidal flow decays, in a few transit or collision times, in.

The moment equation approach to neoclassical transport theory was generalized to nonaxisymmetric toroidal systems under the assumption of the existence of magnetic surfaces. In particular, the parallel plasma flows and bootstrap current are calculated in both the Pfirsch-Schlueter and banana regimes.

It is found that both parallel plasma flows and the bootstrap current can be reduced as the. The transport theory for the superbananas is developed by solving the drift kinetic equation using the Eulerian approach.

The neoclassical toroidal plasma viscosity, and the non-axisymmetric transport coefficients have a scaling, which can be. Neoclassical and anomalous transport fluxes are determined for axisymmetric toroidal plasmas with weak electromagnetic drift wave fluctuations.

The neoclassical and anomalous fluxes are defined based on the ensemble-averaged kinetic equation with the statistically averaged nonlinear wave-particle interactions.

neoclassical properties of the plasmas. This differs from axisymmetric neoclassical transport codes such as NCLASS, and the additional complications require systematic investigation. For this purpose, these coefficients in two low aspect ratio stellarators (NCSX and QPS) have recently been.

Books. Publishing Support. Login. Hinton F L and Wong S K Neoclassical ion transport in rotating axisymmetric plasmas Phys. Fluids 28 Crossref Google Scholar. Cowley S C and Bishop C M Neoclassical transport theory in rotating axisymmetric plasmas Culham Laboratory Report CLM-M Google Scholar.

Shaing's research works with 5, citations and 2, reads, including: Unified modeling of both resonant and non-resonant neoclassical transport under non-axisymmetric magnetic. The theory of neoclassical transport in an impure toroidal plasma is extended to allow for larger pressure and temperature gradients and faster toroidal rotation than are usually considered.

The extended neoclassical rotation theory formulated in Miller flux surface geometry enables unprecedented neoclassical calculations of the poloidal asymmetries in density, rotation velocities.Abstract.

Plasma diffusion across the confining magnetic field is examined with particular emphasis on toroidal confinement geometries. The kinetic theory of plasma equilibrium in axisymmetric systems is discussed, with consideration of the transport coefficients of a rarefied plasma, the motion of individual particles, a simple model of plasma equilibrium in a torus, the effect of electron.In the pedestal region of H-mode tokamak plasmas anomalous transport is highly reduced and impurity transport is found to be well described by neoclassical theory.

Under these conditions, perturbations to the axisymmetric tokamak geometry can strongly affect both radial electric field and particle transport.