差分格式对数值预测室内点源污染物扩散的影响研究

Difference of Scheme's Influence on Numerical Prediction of Contamination Diffusion of Point Source

利用 k- ε湍流模型对室内三维浓度扩散特性进行了数值预测 .计算结果表明作者所提出的一种差分格式可以获得较好计算结果 ,并可防止出现“负浓度”和“数值扩散”

This essay uses k ε model to predict the three dimensional concentration diffusion properties numerically.The results of calculation show that the difference scheme delivered by author can get good result,and can prevent the appearance of negative concentration and numerical diffusion.