城市大气环境的大涡模拟研究进展

被引：25

作者：

崔桂香

张兆顺

许春晓

黄伟希

机构：

[1] 清华大学工程力学系

来源：

力学进展 | 2013年 / 03期

关键词：

城市大气环境; 大涡模拟; 多尺度耦合; 下垫面模型;

D O I：

暂无

中图分类号：

O355 []; O242.1 [数学模拟];

学科分类号：

摘要：

本文回顾城市大气污染扩散的研究实践与进展,介绍城市大气环境流动的特点和用现代计算流体力学手段开展城市大气环境的大涡模拟研究方法,包括:数学模型,控制方程、亚网格湍流模式、定解条件及其数值方法.其中,重点介绍中尺度到微尺度的耦合模型与适用于复杂城市下垫面(满足大涡模拟分辨率要求且计算量较小)的组合模型;并给出实际算例和结果分析,包括准确度的统计估算和湍流特性等.最后,讨论城市大气环境数值模拟方法进一步改进的方向和城市大气环境流动与污染物扩散数值研究应重点关注的几个问题.

引用

页码：295 / 328

页数：34

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