Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10356158 | Journal of Computational Physics | 2012 | 6 Pages |
Abstract
Describing turbulence and microinstabilities in fusion devices is often modelled with the gyrokinetic equation. During the time evolution of the distribution function a field equation for the electrostatic potential needs to be solved. In the case of adiabatic electrons it contains a flux-surface-average term resulting in an integro-differential equation. Its numerical solution is time and memory intensive for three-dimensional configurations. Here a new algorithm is presented which only requires the numerical inversion of a simpler differential operator and a subsequent addition of a correction term. This new procedure is as fast as solving the equation without the surface average.
Keywords
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Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
M. Borchardt, R. Kleiber, W. Hackbusch,