کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
520399 | 867717 | 2013 | 21 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: New velocity-space discretization for continuum kinetic calculations and Fokker–Planck collisions New velocity-space discretization for continuum kinetic calculations and Fokker–Planck collisions](/preview/png/520399.png)
Numerical techniques for discretization of velocity space in continuum kinetic calculations are described. An efficient spectral collocation method is developed for the speed coordinate – the radius in velocity space – employing a novel set of non-classical orthogonal polynomials. For problems in which Fokker–Planck collisions are included, a common situation in plasma physics, a procedure is detailed to accurately and efficiently treat the field term in the collision operator (in the absence of gyrokinetic corrections). When species with disparate masses are included simultaneously, a careful extrapolation of the Rosenbluth potentials is performed. The techniques are demonstrated in several applications, including neoclassical calculations of the bootstrap current and plasma flows in a tokamak.
Journal: Journal of Computational Physics - Volume 243, 15 June 2013, Pages 130–150