The turbulent flow over the BARC rectangular cylinder: a DNS study

This set of results stems from a database computed with a Direct Numerical simulation of the incompressible flow around a rectangular cylinder with chord-to-thickness ratio 5:1 (also known as BARC benchmark). The Reynolds number based on the cylinder thickness and the incoming velocity is set to Re=3000. We provide the two-dimensional mean field as well as the complete set of Reynolds stresses and the terms involved in their single-point budget equations. Further details can be found on an accompanying paper by Chiarini &amp; Quadrio, Flow Turbul. Combust. 107, 875–899 (2021), available at https://doi.org/10.1007/s10494-021-00254-1. Data are provided in VTK file format, so that they can be visualized with several applications, as for example the open-source package ParaView. The file mean.vtk contains the mean flow in terms of the velocity components U and V and pressure field P in the x − y plane.<br> The files uu-Budget.vtk, vv-Budget.vtk, ww-Budget.vtk, uv-Budget.vtk, uw-Budget.vtk, vw-Budget.vtk and k-Budget.vtk contain the complete set of terms appearing in the budget equations for the components of the Reynolds stress tensor and for the turbulent kinetic energy.

本结果集基于针对弦厚比为5:1的矩形圆柱（又称BARC基准模型）周围不可压缩流动开展的直接数值模拟（Direct Numerical Simulation）所生成的数据库。基于圆柱厚度与来流速度定义的雷诺数（Reynolds number）设为Re=3000。本数据集提供二维平均流场，以及完整的雷诺应力集合与雷诺应力单点预算方程中涉及的各项。更多细节可参阅Chiarini与Quadrio发表于《Flow Turbul. Combust.》107卷、第875–899页（2021年）的配套论文，其公开链接为https://doi.org/10.1007/s10494-021-00254-1。数据以VTK文件格式存储，可通过多款应用程序进行可视化，例如开源可视化软件ParaView。其中mean.vtk文件包含x-y平面内速度分量U、V与压力场P对应的平均流场。
文件uu-Budget.vtk、vv-Budget.vtk、ww-Budget.vtk、uv-Budget.vtk、uw-Budget.vtk、vw-Budget.vtk与k-Budget.vtk则囊括了雷诺应力张量各分量以及湍动能（turbulent kinetic energy）预算方程中的全部相关项。