| Автор | G W Hammett |
| Автор | M A Beer |
| Автор | W Dorland |
| Автор | S C Cowley |
| Автор | S A Smith |
| Дата выпуска | 1993-08-01 |
| dc.description | A status report is given on developments in the gyrofluid approach to simulating tokamak turbulence. 'Gyrofluid' (r 'gyro-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 mu Del 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. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Developments in the gyrofluid approach to Tokamak turbulence simulations |
| Тип | paper |
| DOI | 10.1088/0741-3335/35/8/006 |
| Electronic ISSN | 1361-6587 |
| Print ISSN | 0741-3335 |
| Журнал | Plasma Physics and Controlled Fusion |
| Том | 35 |
| Первая страница | 973 |
| Последняя страница | 985 |
| Аффилиация | G W Hammett; Plasma Phys. Lab., Princeton Univ., NJ, USA |
| Аффилиация | M A Beer; Plasma Phys. Lab., Princeton Univ., NJ, USA |
| Аффилиация | W Dorland; Plasma Phys. Lab., Princeton Univ., NJ, USA |
| Аффилиация | S C Cowley; Plasma Phys. Lab., Princeton Univ., NJ, USA |
| Аффилиация | S A Smith; Plasma Phys. Lab., Princeton Univ., NJ, USA |
| Выпуск | 8 |
