为混合陀螺动能离子-流体电子模型开发隐式电磁能力

IF 1.3 4区 物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS
Mikhail Dorf, Milo Dorr, Debojyoti Ghosh
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引用次数: 0

摘要

我们报告了用于边缘等离子体电磁 COGENT 模拟的混合动力学离子-流体电子模型的开发和实施情况。COGENT 是一种有限体积陀螺动力学代码,采用局部场对齐坐标系和映射多块网格技术来处理强各向异性边缘等离子体湍流。模拟模型涉及离子陀螺动能方程的长波长极限,并与电磁场扰动的涡度和欧姆定律方程相耦合。为了处理快速阿尔弗韦恩波的时间尺度,采用了基于物理预处理的隐式-显式时间积分法。该模型成功地应用于环形几何中离子尺度的电阻漂移气球湍流模拟。与完全显式时间积分方法相比,该模型的速度大大提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of an implicit electromagnetic capability for a hybrid gyrokinetic ion-fluid electron model

We report on the development and implementation of a hybrid kinetic ion–fluid electron model for electromagnetic COGENT simulations of edge plasmas. COGENT is a finite-volume gyrokinetic code that employs a locally field-aligned coordinate system combined with a mapped multi-block grid technology to handle strongly anisotropic edge plasma turbulence. The simulation model involves the long-wavelength limit of the ion gyrokinetic equation coupled to the vorticity and Ohm's law equations for the electromagnetic field perturbations. In order to handle the fast Alfvén wave time scales, an implicit-explicit time integration approach with a physics-based preconditioner is used. The model is successfully applied to the simulations of ion-scale resistive-drift ballooning turbulence in a toroidal annulus geometry. Substantial speed-up over a fully explicit time integration approach is observed.

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来源期刊
Contributions to Plasma Physics
Contributions to Plasma Physics 物理-物理:流体与等离子体
CiteScore
2.90
自引率
12.50%
发文量
110
审稿时长
4-8 weeks
期刊介绍: Aims and Scope of Contributions to Plasma Physics: Basic physics of low-temperature plasmas; Strongly correlated non-ideal plasmas; Dusty Plasmas; Plasma discharges - microplasmas, reactive, and atmospheric pressure plasmas; Plasma diagnostics; Plasma-surface interaction; Plasma technology; Plasma medicine.
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