风绕塔体流动的数值模拟

Numerical simulation of air flow over column

利用有限体积法对Re =2 0和Re =13 6时流体绕塔体的流动状况进行数值模拟。结果表明采用三阶精度的QUICK离散动量方程 ,并用瞬态PISO算法求解压力 -速度耦合的方法可以很好地模拟塔体背风侧的旋涡生成及脱落过程。计算结果和理论分析及经典实验结果比较一致 。

In this paper, a method was introduced to simulate the air flowing over a cylindrical tower. Using three-order-accurate finite-volume schemes, sufficient fine grids and transient PISO algorithm for the pressure-velocity coupling ensures numerical credibility. The process of vortex generating and shedding was presented. The results demonstrate favorable agreement with theoretical analysis and experimental data.