Numerical investigation of turbulent channel flow
Numerical investigation of turbulent channel flow
复制标题
DOI：
10.1017/s0022112082001116
复制
发表时间：
1981-07
影响因子：
3.7
通讯作者：
P. Moin;John Kim
中科院分区：
文献类型：
--
作者：
P. Moin;John Kim
在雷诺数为13800的情况下，基于中心线速度和槽道半宽对充分发展的槽道湍流流动进行了数值模拟。通过直接积分经过滤波的三维含时N-S方程，得到了大尺度的流场。用涡粘性模型模拟了小尺度的场运动。这些计算是在拥有多达516096个网格点的ILLIACIV计算机上进行的。计算的流场被用来研究流动的统计特性以及随时间变化的特征。计算的平均速度分布、湍流统计和详细的流动结构与实验数据吻合较好。计算了雷诺-应力方程中出现的统计关联的可分解部分。对墙体附近的流动结构进行了特别的研究。
Fully developed turbulent channel flow has been simulated numerically at Reynolds number 13800, based on centre-line velocity and channel half-width. The large-scale flow field has been obtained by directly integrating the filtered, three-dimensional, time-dependent Navier-Stokes equations. The small-scale field motions were simulated through an eddy-viscosity model. The calculations were carried out on the ILLIACIV computer with up to 516096 grid points. The computed flow field was used to study the statistical properties of the flow as well as its time-dependent features. The agreement of the computed mean-velocity profile, turbulence statistics, and detailed flow structures with experimental data is good. The resolvable portion of the statistical correlations appearing in the Reynolds-stress equations are calculated. Particular attention is given to the examination of the flow structure in the vicinity of the wall.