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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MUSCLTVD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NASALewis 6 7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 ,此方法能快速得到三维粘性流场的流动特性且计算精度较高 ,可用来模拟跨声速风扇转子内部流动
A fast calculation method of 3D viscous flow field is used to solve the flow field inside transonic compressor fan rotor. Based on LU implicit scheme and MUSCLTVD upwind scheme, this method uses the multi-grid iterative acceleration convergence technique in combination with the wall function method and the simple mixed length turbulence model to solve the three-dimensional compressible Reynolds-averaged Navier-Staverander equation. The performance curves of NASALewis 6 7 transonic and low aspect ratio axial fan rotors were calculated and the internal flow field under the highest efficiency point and near stall conditions was analyzed. The comparison between calculation and experimental results shows that this method can quickly obtain the flow characteristics of three-dimensional viscous flow field with high accuracy and can be used to simulate the internal flow of transonic fan rotor