等离子体形变对边界局域模的作用研究

doi:10.16568/j.0254-6086.202003004

核聚变与等离子体物理 ›› 2020, Vol. 40 ›› Issue (3): 215-221.DOI: 10.16568/j.0254-6086.202003004

等离子体形变对边界局域模的作用研究

秦晨晨1，牟茂淋1，陈少永*1，唐昌建1，吴娜2

(1. 四川大学物理学院，成都610065；2. 核工业西南物理研究院，成都 610041)

收稿日期:2019-04-28 修回日期:2020-06-15 出版日期:2020-09-15 发布日期:2020-09-16
作者简介:秦晨晨(1993-)，男，河北邯郸人，硕士，从事托卡马克磁流体不稳定性研究。
基金资助:
国家自然科学基金(11775154)；国家磁约束核聚变能发展研究专项(2017YFE0301203)

The study of plasma shaping effect on edge localized mode

QIN Chen-chen1, MOU Mao-lin1, CHEN Shao-yong1, TANG Chang-jian1, WU Na2

(1. College of Physical Science and Technology, Sichuan University, Chengdu 610065; 2. Southwestern Institute of Physics, Chengdu 610041)

Received:2019-04-28 Revised:2020-06-15 Online:2020-09-15 Published:2020-09-16

摘要/Abstract

摘要： 在磁流体模拟代码BOUT++剥离气球模三场模块框架下研究了等离子体形变参数(拉长比和三角形变)对边界局域模的影响。研究表明，在线性阶段，拉长比主要作用于剥离气球模中气球模成分，抑制了环向模数较高的气球模不稳定性；而三角形变则对剥离气球模中剥离模成分和气球模成分均有抑制作用。在非线性阶段，拉长比导致边界E×B剪切率增加，迫使压强扰动的正值部分向等离子体芯部发展，导致边界局域模的能量损失增加；三角形变则导致边界E×B剪切率降低，使得压强扰动可以向等离子体边缘发展，台基向等离子体芯部的崩塌减弱，从而对边界局域模起到缓解作用。

关键词: 边界局域模, 剥离气球模, 拉长比, 三角形变

Abstract: Influence of shaped plasma parameters (elongation and triangularity) on edge localized mode is simulated with the peeling-ballooning three-field module of BOUT++ code. In the linear simulation, the elongation has mainly effect on the ballooning component of the peeling-ballooning mode and suppresses its growth, while the triangularity has effect on both ballooning component and peeling component of the peeling-ballooning mode. In the nonlinear simulation, the elongation leads to larger ELMs energy loss because of the increased boundaryshear rate which forces the positive pressure perturbation to extend to the plasma core, while the triangularity plays an opposite role.

Key words: Edge localized mode, Peeling-ballooning mode, Elongation, Triangularity

中图分类号:

O534+2

秦晨晨1，牟茂淋1，陈少永*1，唐昌建1，吴娜2. 等离子体形变对边界局域模的作用研究[J]. 核聚变与等离子体物理, 2020, 40(3): 215-221.

QIN Chen-chen1, MOU Mao-lin1, CHEN Shao-yong1, TANG Chang-jian1, WU Na2 . The study of plasma shaping effect on edge localized mode [J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2020, 40(3): 215-221.

参考文献

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等离子体形变对边界局域模的作用研究

The study of plasma shaping effect on edge localized mode

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