高层建筑风场数值模拟研究

Numerical Simulation on the High-rise Building Wind Field Based on FLUENT and Cluster

本文以FLUENT软件和高性能集群作为数值模拟平台,通过改变高层建筑物高度进行了并行数值模拟。并对并行数值模拟结果和集群并行计算效率进行了分析,分析结果表明:随着建筑物高度的增加,建筑物周围最大风速和最大风速比增大,建筑物对其周围空气流动的影响增强。在并行计算中,当CPU个数相同时,随着网格数量的增加,并行效率呈增加趋势但增大的幅度越来越小;当网格数相同时,随着CPU个数增加,并行计算效率呈减小趋势。

In this paper, the actual high building is simulated based on FLUENT software and High Performance Cluster platform, and parallel numerical simulations were done by changing the height of high-rise buildings. The parallel numerical simulation results and efficiency of parallel computing clusters were analyzed, which we can get the following conclusions：With the increase of building height, the speed of wind and the speed of wind ratio increased at maximum, and effect of air flow become stronger around the building. When the number of CPU is the same, with the increase in the number grid, efficiency show an increasing tendency, but the increase of the magnitude become smaller;When the grid number is the same, with the increase of CPU number the efficiency of parallel computing show decreasing tendency in parallel computing.