...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physics of plasmas >Characterization and parametric dependencies of low wavenumber pedestal turbulence in the National Spherical Torus Experiment
【24h】

Characterization and parametric dependencies of low wavenumber pedestal turbulence in the National Spherical Torus Experiment

机译：国家球形圆环实验中低波数基座湍流的表征和参数依赖性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The spherical torus edge region is among the most challenging regimes for plasma turbulence simulations. Here, we measure the spatial and temporal properties of ion-scale turbulence in the steep gradient region of H-mode pedestals during edge localized mode-free, MHD quiescent periods in the National Spherical Torus Experiment. Poloidal correlation lengths are about 10 ρ i, and decorrelation times are about 5 a / c s. Next, we introduce a model aggregation technique to identify parametric dependencies among turbulence quantities and transport-relevant plasma parameters. The parametric dependencies show the most agreement with transport driven by trapped-electron mode, kinetic ballooning mode, and microtearing mode turbulence, and the least agreement with ion temperature gradient turbulence. In addition, the parametric dependencies are consistent with turbulence regulation by flow shear and the empirical relationship between wider pedestals and larger turbulent structures.
机译：球形圆环边缘区域是等离子体湍流模拟最具挑战性的方案之一。在这里，我们在国家球形圆环实验的边缘局部无模式，MHD静止期测量H模式基座的陡坡区域中离子尺度湍流的时空特性。极坐标相关长度约为10ρi，去相关时间约为5 a / c s。接下来，我们介绍一种模型聚合技术，以识别湍流量和与运输相关的等离子体参数之间的参数依赖性。参数依存关系显示与由俘获电子模式，动力学膨胀模式和微撕裂模式湍流驱动的传输最一致，而与离子温度梯度湍流最不一致。另外，参数依赖性与通过流动剪切的湍流调节以及较宽的基座和较大的湍流结构之间的经验关系一致。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号