Spectra and mode structure of global drift modes in toroidal geometry
To get an overview of drift waves in tokamak plasmas, a fluid code was written so as to easily obtain spectra and mode structure over a wide range of parameters. In particular, the goal of this study was to understand the effect of toroidicity and ellipticity on these waves and whether they can induce new modes. In this spirit, the simplest fluid model was chosen. It contains radial and poloidal coupling related to polarization and curvature drift which are essential for global drift waves. The resulting partial differential equation was cast into a weak variational form and solved using linear finite elements in the radial direction and Fourier series in the poloidal direction.
Bibliographic Reference: Article: Proceedings of the 22nd European Physical Society Conference on Controlled Fusion and Plasma Physics, Vol. 19C (1995) Part IV, pp. 241-244
Record Number: 199610071 / Last updated on: 1996-02-16
Original language: en
Available languages: en