Collisional gyrokinetic full‐f particle‐in‐cell simulations on open field lines with PICLS
Collisional gyrokinetic full‐f particle‐in‐cell simulations on open field lines with PICLS
复制标题
使用 PICLS 在开放场线上进行碰撞回旋运动全 f 颗粒细胞模拟
DOI：
10.1002/ctpp.201900117
复制
发表时间：
2019
影响因子：
1.6
通讯作者：
F. Jenko
中科院分区：
文献类型：
--
作者：
M. Boesl;A. Bergmann;A. Bottino;David Coster;E. Lanti;N. Ohana;F. Jenko
在等离子体边缘和刮除层 (SOL) 的理论湍流和输运研究中应用回旋运动模拟提出了重大挑战。为了特别考虑 SOL 中陡峭的密度和温度梯度，开发了“full-f”代码 PICLS。 PICLS 是一种回旋粒子胞内 (PIC) 代码，基于具有线性化场方程的静电模型，并使用动电子。在之前发表的结果中，我们将 PICLS 应用于 SOL 中边缘局部模式 (ELM) 期间经过充分研究的一维并行传输问题，而没有碰撞。作为这种无碰撞情况的扩展以及为 3D 模拟做准备，在这项工作中，将引入碰撞模型。将显示已实现的 Lenard-Bernstein 碰撞算子及其 Langevin 离散化。将讨论碰撞算子的守恒性质，以及碰撞和非碰撞情况的比较。
Applying gyrokinetic simulations in theoretical turbulence and transport studies for the plasma edge and scrape‐off layer (SOL) presents significant challenges. To particularly account for steep density and temperature gradients in the SOL, the “full‐f” code PICLS was developed. PICLS is a gyrokinetic particle‐in‐cell (PIC) code, is based on an electrostatic model with a linearized field equation, and uses kinetic electrons. In previously published results, we applied PICLS to the well‐studied 1D parallel transport problem during an edge‐localized mode (ELM) in the SOL without collisions. As an extension to this collision‐less case and in preparation for 3D simulations, in this work, a collisional model will be introduced. The implemented Lenard–Bernstein collision operator and its Langevin discretization will be shown. Conservation properties of the collision operator, as well as a comparison of the collisional and non‐collisional case, will be discussed.