Transient versus steady-state solutions: a qualitative study

IF 2.1 3区 物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS Journal of Plasma Physics Pub Date : 2024-03-27 DOI:10.1017/s0022377824000187
D. Van Eester, E.A. Lerche, E. Pawelec, E. Solano
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Abstract

In view of the ultimate goal of producing long-lasting quasi-stationary discharges required for future fusion power stations, the numerical study of steady-state solutions of equations describing the particle and energy balance rightfully gets ample attention. Transient states may, however, differ significantly from the steady state ultimately reached and will – in practice – impact on the actual fate of the discharge. Using brutally simple models, the present paper highlights a number of aspects to illustrate this dynamics. It e.g. shows the different signature of wave and beam heating, potentially giving room to transiently trigger desirable effects that may allow us to better steer a discharge.
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瞬态与稳态解决方案:定性研究
鉴于未来核聚变电站所需的产生持久准稳态放电的最终目标,描述粒子和能量平衡方程的稳态解的数值研究理所当然地得到了广泛关注。然而,瞬态可能与最终达到的稳态有很大不同,并在实践中影响放电的实际命运。本文使用非常简单的模型,从多个方面重点说明了这种动态变化。例如,本文展示了波和光束加热的不同特征,这可能为瞬时触发理想效应提供了空间,从而使我们能够更好地引导放电。
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来源期刊
Journal of Plasma Physics
Journal of Plasma Physics 物理-物理:流体与等离子体
CiteScore
3.50
自引率
16.00%
发文量
106
审稿时长
6-12 weeks
期刊介绍: JPP aspires to be the intellectual home of those who think of plasma physics as a fundamental discipline. The journal focuses on publishing research on laboratory plasmas (including magnetically confined and inertial fusion plasmas), space physics and plasma astrophysics that takes advantage of the rapid ongoing progress in instrumentation and computing to advance fundamental understanding of multiscale plasma physics. The Journal welcomes submissions of analytical, numerical, observational and experimental work: both original research and tutorial- or review-style papers, as well as proposals for its Lecture Notes series.
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