Lagrangian statistics in turbulent channel flow

A set of Lagrangian statistics of passive tracers in a turbulent channel flow. The particle trajectories are obtained by means of integration of a simulated flow field, computed via Direct Numerical Simulation, at four different Reynolds numbers. The Reynolds numbers here employed are \(\mathrm{Re}_{\tau} = \frac{u_{\tau}\delta}{\nu} = 180,\,395,\,590,\,950\), where \(u_{\tau}\)is the frictional velocity, \(\delta\) is the channel half height and \(\nu\) is the kinematic viscosity. Additional information about the database is provided in the included documentation. v1.0 -> Added statistics at ReT = 950 v1.1 -> Added statistics at ReT = [180, 395, 590] v1.2 -> Added statistics at ReT = 265本数据集收录了湍流通道流内被动示踪剂的拉格朗日统计量（Lagrangian statistics）。粒子轨迹通过对直接数值模拟（Direct Numerical Simulation, DNS）生成的模拟流场进行积分得到，共包含四组不同雷诺数的模拟工况。本次采用的雷诺数为摩擦雷诺数$mathrm{Re}_{ au} = frac{u_{ au}delta}{ u} = 180,,395,,590,,950$，其中$u_{ au}$为摩擦速度，$delta$为通道半高，$ u$为运动学粘度。该数据集的补充说明详见随附文档。版本更新记录如下：v1.0 新增了$mathrm{Re}_{ au}=950$工况下的统计数据；v1.1 新增了$mathrm{Re}_{ au}=[180, 395, 590]$工况下的统计数据；v1.2 新增了$mathrm{Re}_{ au}=265$工况下的统计数据。