乘方和 QUICK 格式在非对称扩压器内流动计算的比较

“POWER-LAW” AND “QUICK” SCHEMES IN NUMERICAL STUDY OF NONSYMMETRY DIFFUSER

采用Ｓｐｅｚｉａｌｅ的非线性ｋ－ε模型计算了非对称扩压器内的流动，着重用数值方法考察了两种典型的对流差分格式（乘方格式和ＱＵＩＣＫ格式）对模型预测性能的影响，得出两种紊流模型对对流差分格式并不敏感的结论。

Speziale's nonlinear k-ε model is used to calculate the turbulent flow in nonsymmetry diffuser.Attention is focused on effect of the two typical convective difference schemes,“Power-Law” and “QUICK” schemes,on the performance of the models (the standard and nonlinear k-ε models).The results show that both convective difference schemes have little effect on the prediction of the models.So it is no longer to puzzle brain about choice of convective difference schemes,when applying to nonlinear k-ε models.