发表机构
École Polytechnique Fédérale de Lausanne (EPFL); Swiss Plasma Center (SPC); Institute of Mathematics(洛桑联邦理工学院; 瑞士等离子体中心; 数学研究所)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
该研究修订漂移约化Braginskii模型,分析常用近似对能量守恒的影响,并在GBS代码中量化,去除关键近似后模拟输运增强且热通量更接近实验。
AI 中文摘要
本文提出了对漂移约化Braginskii模型的一次修订,重点聚焦于其在数值代码中的实际实现,并系统分析了若干常用近似对能量守恒的影响。作为实际示例,在GBS代码中量化了这些近似的影响。通过去除最重要的近似及相关能量汇,模拟显示输运水平提高,且靶板热通量与实验观测更为接近。
英文摘要
A revision of the drift-reduced Braginskii model is presented, focusing on its practical implementation in numerical codes, and systematically analyzing the effect of several commonly-used approximations on energy conservation. As a practical example, the effect of the approximations is quantified in the GBS code. By dropping the most important approximations and related energy sinks, the simulation shows increased transport levels and a target heat flux with closer agreement to experimental observations.
Comments24 pages, 7 figures, 1 table