中文摘要：

分别采用-↑v′2-f模型、κ-ε模型和室内零方程模型对通风空凋中典型的气流组织形式混合对流进行数值模拟．研究表明：在通风人口附近存在一个分离涡，对这个分离涡预测的准确程度是整个计算成败的关键因素．将预测结果和实验进行比较，发现这个涡的尺度介于-↑v′2-f模型和零方程模型预测的结果之间，比κ-ε模型预测的结果大．虽然从流场上看，零方程模型预测的结果和实验结果吻合很好，但从模型构造的角度看，它不具备普遍的意义．从对温度场的预测看，-↑v′2-f模型预测结果最好，室内零方程模型次之，κ-ε模型结果最差．

英文摘要：

-↑v′2-fmodel, aκ-εmodel and an indoor zero equation model are adopted respectively to simulate mixed convections which are typical in ventilation and air conditioning systems. It indicates that there is a separated vortex near the ventilation inlet, and the accuracy for predicting this vortex is a critical factor in the simulation. The separated vortex dimension obtained by experiments is between the values calculated by the -↑v′2-f model and the indoor zero equation model, while the dimension predicted by the κ-εmodel is a bit smaller. The results predicted by the indoor zero equation fit experimental results best. However, it is not in general from the view of model structure. For calculating temperature field the -↑v′2-f model is better than the indoor zero equation model, and the κ-ε model is the worst among the three.