城市下垫面污染物扩散关键因素与模型进展研究  

作　　者：夏慧瑶 王汉青 李旺 孟德雨 

机构地区：[1]南华大学土木工程学院,湖南衡阳421001 [2]中南林业科技大学土木工程学院,湖南长沙410000 [3]建筑环境控制技术湖南省工程实验室,湖南衡阳421001

出　　处：《科技创新与应用》2022年第1期1-6,12,共7页Technology Innovation and Application

基　　金：国家自然科学基金项目(编号:U1867221)。

摘　　要：大气在城市下垫面传输扩散除了受到风、温度层结、湍流和大气稳定度等基本因素的影响,还需考虑人类活动和特殊地形导致的影响,如人工植被、道路结构、建筑群以及水体因素。文章介绍了城市下垫面影响大气污染物扩散的因素和外场试验、风洞试验、数值模型模拟三种基本研究方法,并对学者们当前进行的多种模型模拟方法进行了简要总结,同时指出了目前研究工作中存在的问题并针对这些问题对大气扩散模型研究方向提出了一些建议。The transport and diffusion of the atmosphere on the urban underlying surface is not only affected by basic factors such as wind,temperature stratification,turbulence and atmospheric stability,but also by human activities and special topography.Such as artificial vegetation,road structure,building groups and water factors.In this paper,the influence factors of urban underlying surface on atmospheric diffusion of pollutants and three basic research methods of outfield test,wind tunnel test and numerical model simulation are introduced,and a variety of model simulation methods currently carried out by scholars are briefly summarized.At the same time,the problems existing in the current research work are pointed out and some suggestions on the research direction of atmospheric diffusion model are put forward in view of these problems.

关 键 词：城市下垫面 大气扩散 影响因素 大气扩散模型 

分 类 号：X511[环境科学与工程—环境工程]