Two-particle dispersion in anisotropic MHD turbulence

This is ASCII data for Figure 3 from Pratt, Busse, Mueller 2020<br>"Lagrangian Statistics for Dispersion in Magnetohydrodynamic<br>Turbulence". The time values are provided with Figure 1.<br><br>The figure shows the evolution of the mean-square relative dispersion in<br>homogeneous isotropic Navier-Stokes turbulence (simulation HNOVIS),<br>homogeneous isotropic MHD turbulence (simulation ANOVIS0), and<br>homogeneous anisotropic MHD turbulence (simulation ANOVIS3). The<br>behavior for pairs with an initial separation of 2 eta_kol<br>is shown (a) for particles initially separated in the direction<br>perpendicular to the mean magnetic field and separation distance<br>perpendicular to the field measured, and (b) for particles initially<br>separated in the direction parallel to the mean magnetic field,<br>separation distance aligned with the mean magnetic field is measured.<br><br>

本数据集为Pratt、Busse与Mueller于2020年发表的论文《磁流体动力学湍流中的弥散拉格朗日统计》（Lagrangian Statistics for Dispersion in Magnetohydrodynamic Turbulence）中图3对应的ASCII数据。时间参数与图1一致。

该图展示了三类湍流场景下的均方相对弥散演化过程：均匀各向同性纳维-斯托克斯（Navier-Stokes）湍流（模拟算例HNOVIS）、均匀各向同性磁流体动力学（Magnetohydrodynamic, MHD）湍流（模拟算例ANOVIS0），以及均匀各向异性磁流体动力学湍流（模拟算例ANOVIS3）。本图展示了初始间距为2 eta_kol的粒子对的弥散特性：(a) 粒子初始间距沿垂直于平均磁场的方向，且测量垂直于磁场方向的间距演化；(b) 粒子初始间距沿平行于平均磁场的方向，且测量与平均磁场对齐方向的间距演化。