标题： 重杂质在漂移波湍流中的多尺度几何拉格朗日统计 显示英文标题

标题： Multiscale geometrical Lagrangian statistics of heavy impurities in drift-wave turbulence

摘要： 我们通过使用Hasegawa-Wakatani模型分析其轨迹，研究重杂质在边缘等离子体湍流中的行为。 通过直接数值模拟，我们在统计稳态湍流中跟踪带电杂质粒子的集合体经过数百个涡旋周转时间。 假设重杂质滞后于流动，提出了一种新的重杂质弛豫时间的推导方法。 我们的结果表明，重杂质可以在湍流中聚集。 我们提供了重杂质轨迹的多尺度几何 拉格朗日统计。 为了量化方向变化，我们分析了尺度相关的曲率角，以及斯托克斯数对平均曲率角和曲率角概率分布函数的影响。 显示英文摘要

摘要： We investigate the behavior of heavy impurities in edge plasma turbulence by analyzing their trajectories using the Hasegawa-Wakatani model. Through direct numerical simulations, we track ensembles of charged impurity particles over hundreds of eddy turnover times within statistically steady turbulent flows. Assuming that heavy impurities lag behind the flow, a novel derivation of relaxation time of heavy impurities is proposed. Our results reveal that heavy impurities can cluster within turbulence. We provide multiscale geometrical Lagrangian statistics of heavy impurities trajectories. To quantify directional changes, we analyze the scale-dependent curvature angle, along with the influence of the Stokes number on the mean curvature angles and the probability distribution function of curvature angles.