复杂地形空气质量模式的分析与实验

ANALYSIS AND EXPERIMENTAL STUDY OF COMPLEX TERRAIN AIR QUALSTY MODELS

通过对理想山体模型在大气环境风洞中作示踪扩散的实验测量，以及利用ＣＴＤＭ扩散模式所作计算，为模式改进及其实际应用作了分析，提供了量化的参考依据．研究表明ＣＴＤＭ模式计算值与风洞测量值相差在两倍之内的点占总测点的百分率最高达１００％，最低为６２．１％，平均为８７．２％．利用所获得实验测量的结果，本文工作还对渡口山区扩散模式做了相应的计算分析。

In this paper, a trace gas experiment of ideal hill models has been performed in the NJU environmental wind tunnel, and the CTDM dispersion mdodel has also been used to calculate the concentrations. In order to give some data references to practise and to improve the model, the resuits from the experiment and calculation have been compared. The comparison shows that the percentage of the calculated values which fall in the range of two times measurement is 62.1 100 and it is 87.2 in average. Based on the experiment, the Dukou dispersion model has also been used in order to give a reason able modlflcation coefficients of terrain.