建筑物周围空气污染物浓度的分布是建筑和空调工程师主要关心的问题，他们设计建筑物正面或屋顶的通风入口和出口。CFD越来越多地被用于预测建筑物周围的气流和相关过程。本文讨论了CFD模拟建筑物周围空气污染物扩散的可能性和局限性。重点是孤立建筑周围的分散，这是城市环境中分散的一般基本情况。 简要描述了RANS和LES的优缺点，并对三种不同研究中获得的结果进行了比较和讨论。研究表明，即使对于孤立的建筑物，也存在相当大的困难，CFD还没有达到可以作为污染物扩散建模的独立实用工程工具的阶段。引文:ASHRAE交易，2010年，第116卷，pt。新墨西哥州阿尔伯克基2号

The distribution of air pollutant concentrations around buildings is a main concern of building and air-conditioning engineers that design the ventilation inlets and outlets on building facades or roofs. CFD is increasingly used to predict air flow and related processes around buildings. In this paper, the possibilities and limitations of CFD for simulating air pollutant dispersion around buildings are discussed. The focus is on dispersion around an isolated building, as the generic basic case for dispersion in the urban environment. The advantages and disadvantages of RANS and LES are briefly described, and results from three different cases obtained in separate studies are compared and discussed. It is shown that even for the case of an isolated building, considerable difficulties exist and that CFD is not yet at a stage where it can be used as a stand-alone practical engineering tool for pollutant dispersion modeling.