| 平衡电流位形对电阻壁模稳定性影响的数值模拟 |
| |
| 引用本文： | 陈龙溪,雷文庆,吴斌.平衡电流位形对电阻壁模稳定性影响的数值模拟[J].计算物理,2013,30(6):902-908. |
| |
| 作者姓名： | 陈龙溪 雷文庆 吴斌 |
| |
| 作者单位： | 1. 山东青年政治学院信息工程学院, 济南 250103;2. 山东省高校信息安全与智能控制重点实验室, 济南 250103;3. 中国科学院等离子体物理研究所, 合肥 230031 |
| |
| 基金项目： | 山东省自然科学基金(ZR2012AQ025);国家自然科学基金(11175156);山东青年政治学院重点研究基金(2013ZD09)资助项目 |
| |
| 摘 要： | 数值研究平衡电流位形对电阻壁模式稳定性的影响.研究发现,对于不同的电流位形,当等离子体边缘处安全因子一定时,最不稳定的电阻壁模的环向模数和极向模数相同.在同一壁位置下,非均匀电流位形驱动的电阻壁模的线性增长率比均匀电流位驱动的电阻壁模的线性增长率大.等离子体速度流在不同的初始电流位形下对电阻壁模稳定性的影响不同.由于磁力线在壁上的挤压,经过线性演化后,电阻壁模进入非线性演化并达到饱和状态,非均匀电流位形下的扰动磁能比均匀电流位形下的扰动磁能饱和度低.
|
| 关 键 词： | 电阻壁模 平衡位形 稳定性 饱和 |
| 收稿时间： | 2013-03-06 |
| 修稿时间： | 2013-07-05 |
Numerical Study on Effect of Equilibrium Current Profile on Resistive Wall Mode Stability |
| |
| CHEN Longxi,LEI Wenqing,WU Bin.Numerical Study on Effect of Equilibrium Current Profile on Resistive Wall Mode Stability[J].Chinese Journal of Computational Physics,2013,30(6):902-908. |
| |
| Authors: | CHEN Longxi LEI Wenqing WU Bin |
| |
| Institution: | 1. School of Information Engineering, Shandong Youth University of Political Science, Jinan 250103, China;2. Key Lab of Information Security and Intelligent Control in Universities of Shandong, Jinan 250103, China;3. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China |
| |
| Abstract: | Effect of equilibrium current profile on resistive wall mode stability are numerically studied. The most unstable mode with different equilibrium current profiles under fixed safety factor at plasma surface has same poloidal number and toroidal number. At same wall location, linear growth rate of (3,1) mode of non-uniform current profile is greater than that of uniform current profile. Effect of plasma flow on resistive wall mode stability is different with different current profiles. After linear evolution, RWM saturates at nonlinear phase. Saturation can be attributed to flux piling up on resistive wall. Saturation level of non-uniform current profile is lower than that of uniform current profile. |
| |
| Keywords: | resistive wall mode equilibrium profile stability saturation |
|
| 点击此处可从《计算物理》浏览原始摘要信息 |
| 点击此处可从《计算物理》下载免费的PDF全文 |
|
