跨声速轴流风扇转子流场三维粘性数值分析

采用一种快速求解三维粘性流场的计算方法求解跨声速压气机风扇转子内部流场。该方法以ＬＵ型隐式格式和ＭＵＳＣＬ ＴＶＤ迎风格式为基础，结合壁面函数方法和简单的混合长度湍流模型，使用多重网格迭代加速收敛技术，对三维可压缩雷诺平均Ｎ－Ｓ方程进行求解。计算得到了ＮＡＳＡ Ｌｅｗｉｓ ６７跨声速、低展弦比轴流风扇转子的性能曲线，并重点分析了最高效率点工况和近失速工况下的内部流场。计算与实验结果的对比表明，此方

3-D viscous numerical investigation on flow field of a transonic axial-flow fan rotor

The internal flow field of NASA Lewis Rotor 67 was numerically analyzed using a fast full 3-D viscous flow calculating method with multigrid acceleration technique This practical engineering-oriented method was developed based on a new Lower-Upper implicit scheme and a fourth-order high resolution MUSCL TVD scheme A wall-function method was employed to effectively reduce the computational effort Simple zero-equation turbulence model was adopted to closure the Reynolds-averaged Navier-Stokes equations Compared with the results obtained from experimental data, these solutions demonstrate both the efficiency and accuracy needed by practical applications