An alternative approach to field-aligned coordinates for plasma turbulence simulations

作者：Ottaviani M^*

来源：Physics Letters A, 2011, 375(15): 1677-1685.

DOI：10.1016/j.physleta.2011.02.069

• Plasma turbulence
• Field-aligned coordinates

In this work, a new approach to field-aligned coordinates for plasma turbulence is presented, in which the position along the field lines is identified by the toroidal angle. The several advantages of the new approach are discussed. It is also shown that the approach can be generalised to get rid of magnetic coordinates in the poloidal plane altogether. Tests are carried out by comparing codes implementing a basic ion temperature gradient turbulence model with the old and the new methods. Results show an unexpected property of the model, that localized large parallel gradients can intermittently appear in the turbulent regime.

• 出版日期2011-4-11
• 单位中国地震局