J-TEXT装置上密度对边缘剪切流和湍流的影响

温思宇; 赵开君; 谢耀禹; 陈志鹏; 陈忠勇; 高丽; 丁肖冠; 胡莹欣

doi:10.16056/j.2096-7705.2025.01.017

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J-TEXT装置上密度对边缘剪切流和湍流的影响

更新时间：2026-01-19

- J-TEXT装置上密度对边缘剪切流和湍流的影响
- Issue 1, Pages: 151-158+172(2025)
- 作者机构：
  
  1. 东华理工大学核科学与工程学院
  2. 华中科技大学电气与电子工程学院磁约束聚变与等离子体国际合作联合实验室,强电磁技术全国重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16056/j.2096-7705.2025.01.017
  CLC： TL631.24
- Published：2025
- 稿件说明：
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温思宇, 赵开君, 谢耀禹, et al. J-TEXT装置上密度对边缘剪切流和湍流的影响[J]. 2025, (1): 151-158+172.
DOI：

温思宇, 赵开君, 谢耀禹, et al. J-TEXT装置上密度对边缘剪切流和湍流的影响[J]. 2025, (1): 151-158+172. DOI： 10.16056/j.2096-7705.2025.01.017.

摘要

湍流非线性驱动的剪切流可以通过剪切抑制湍流及其驱动的输运。为研究密度对J-TEXT装置上边缘剪切流和湍流的影响，采用快速往复朗缪尔探针阵列观测了边缘等离子体参数，利用两点法和联合概率密度函数等方法，详细分析了不同弦积分密度下剪切层附近的湍流特征。结果表明：随着等离子体密度的增加，边缘电子温度降低，在Δr=-0.25 cm附近的Er×B剪切减弱，湍流极向和径向波数谱的峰值增大，并且峰值径向波数由0.8 cm-1变为1.6 cm

-1

；在剪切层附近，增加等离子体密度可以减弱残余协强和边缘剪切流，以及增强湍流传播；较低密度时，剪切流引起的湍流对称性破缺可以增强残余协强，进而驱动剪切流。研究结果对于理解托卡马克等离子体中的湍流输运和改进约束有所帮助。

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