Implementation of magnetic compressional effects at arbitrary wavelength in the global version of GENE

IF 7.2 2区物理与天体物理 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Computer Physics Communications Pub Date : 2024-11-08 DOI:10.1016/j.cpc.2024.109410

Felix Wilms , Gabriele Merlo , Facundo Sheffield , Tobias Görler , Alejandro Bañón Navarro , Frank Jenko

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引用次数: 0

Abstract

The global tokamak code GENE has been extended including the effect of magnetic compression caused by

B_{1, | |}

turbulent fluctuations of the magnetic field parallel to the equilibrium one. This paper outlines the basic structure of the algorithm, valid at arbitrary wavelengths of the gyrokinetic fluctuations, with emphasis on the numerical construction of the so-called “gyrodisk-integral” operators necessary for the model. The numerical implementation is successfully verified against radially local simulations, recovering excellent agreement. Global tokamak simulations are presented as well. The upgrade enables studying a large variety of new physical scenarios at high plasma-β, such as kinetic ballooning modes, MHD-like modes or the interaction of

B_{1, | |}

with fast particle modes, reducing the gap between gyrokinetic models and physically realistic systems.

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在 GENE 全局版本中实现任意波长的磁压缩效应

全球托卡马克代码 GENE 已经得到扩展，其中包括由 B1,|| 磁场平行于平衡磁场的湍流波动引起的磁压缩效应。本文概述了该算法的基本结构，它适用于任意波长的陀螺动能波动，重点是模型所需的所谓 "陀螺积分 "算子的数值构造。数值实施与径向局部模拟进行了成功验证，结果非常吻合。此外还介绍了全球托卡马克模拟。这一升级使我们能够研究高等离子体-β下的各种新的物理情景，如动力学气球模式、类 MHD 模式或 B1,|| 与快速粒子模式的相互作用，从而缩小了陀螺动力学模型与物理现实系统之间的差距。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computer Physics Communications 物理-计算机：跨学科应用

CiteScore

12.10

自引率

3.20%

发文量

287

审稿时长

5.3 months

期刊介绍： The focus of CPC is on contemporary computational methods and techniques and their implementation, the effectiveness of which will normally be evidenced by the author(s) within the context of a substantive problem in physics. Within this setting CPC publishes two types of paper. Computer Programs in Physics (CPiP) These papers describe significant computer programs to be archived in the CPC Program Library which is held in the Mendeley Data repository. The submitted software must be covered by an approved open source licence. Papers and associated computer programs that address a problem of contemporary interest in physics that cannot be solved by current software are particularly encouraged. Computational Physics Papers (CP) These are research papers in, but are not limited to, the following themes across computational physics and related disciplines. mathematical and numerical methods and algorithms; computational models including those associated with the design, control and analysis of experiments; and algebraic computation. Each will normally include software implementation and performance details. The software implementation should, ideally, be available via GitHub, Zenodo or an institutional repository.In addition, research papers on the impact of advanced computer architecture and special purpose computers on computing in the physical sciences and software topics related to, and of importance in, the physical sciences may be considered.