轴对称湍流冲击射流场的数值预测

Numerical Predictions of An Axisymmetric Impinging Jet Flow-Field

应用标准 k-ε模型和一种重正化群 (RNG) k-ε模型 ,对半封闭轴对称湍流冲击射流场进行了数值模拟。通过两种模型计算结果的比较以及与参考文献中 LDV测量结果的比较 ,评价了 RNG k-ε模型对冲击射流场的数值预测能力。最后 ,根据数值模拟的结果 ,从流体动力学角度分析了冲击射流场的结构特性。图 8表1参

The standard k ε model and a RNG based k ε model were applied to the numerical simula tion of a semi confied axisymmetric turbulent impinging jet flow field. By comparison with each other and with the experimental data, the abilities of thue two models in predicting the impinging jet flow field are assessed. Based on the numerical results, the structural characteristics of the impinging jet flow field was analyzed from the fluid dynamics. Figs 8, table 1 and refs 7.