实现具有相干结构的合成磁湍流

IF 1.8 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY EPL Pub Date : 2024-05-30 DOI:10.1209/0295-5075/ad438f

Jeremiah Lübke, Frederic Effenberger, Mike Wilbert, Horst Fichtner and Rainer Grauer

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引用次数: 0

摘要

合成湍流是研究复杂的天体物理和空间等离子体环境的重要工具，而直接模拟是无法实现的。然而，传统模型缺乏间歇相干结构，而这在现实湍流中是必不可少的。我们提出了一种新方法，它具有与磁流体动力学湍流相媲美的相干结构、条件结构函数缩放和场线曲率统计。我们还研究了带电粒子的增强传输。该方法在实现物理忠实合成湍流方面取得了重大进展。

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Towards synthetic magnetic turbulence with coherent structures

Synthetic turbulence is a relevant tool to study complex astrophysical and space plasma environments inaccessible by direct simulation. However, conventional models lack intermittent coherent structures, which are essential in realistic turbulence. We present a novel method featuring coherent structures, conditional structure function scaling and fieldline curvature statistics comparable to magnetohydrodynamic turbulence. Enhanced transport of charged particles is investigated as well. This method presents significant progress towards physically faithful synthetic turbulence.

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来源期刊

EPL 物理-物理：综合

CiteScore

3.30

自引率

5.60%

发文量

332

审稿时长

1.9 months

期刊介绍： General physics – physics of elementary particles and fields – nuclear physics – atomic, molecular and optical physics – classical areas of phenomenology – physics of gases, plasmas and electrical discharges – condensed matter – cross-disciplinary physics and related areas of science and technology. Letters submitted to EPL should contain new results, ideas, concepts, experimental methods, theoretical treatments, including those with application potential and be of broad interest and importance to one or several sections of the physics community. The presentation should satisfy the specialist, yet remain understandable to the researchers in other fields through a suitable, clearly written introduction and conclusion (if appropriate). EPL also publishes Comments on Letters previously published in the Journal.