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在任意曲线转动坐标系及重整化群 (RNG)方法改进的k ε两方程湍流模型基础上 ,提出了“通用进出口边界条件”的给法 ,并利用改进的强隐式 (MSIP)方法进行计算迭代 ,提高了对多排叶轮机数值模拟的稳定性和准确性 .通过对某对旋轴流风机定常全三维流场的计算 ,并与设计参数和实验性能参数进行对比分析后 ,验证了在风扇 /压气机的设计中 ,不宜在叶尖区分配最大负荷 ,这种设计对对旋轴流压缩系统尤其不利
Based on the turbulent model of k ε two-equation improved by arbitrary curvilinear rotation coordinate system and renormalization group (RNG) method, a generalized import and export boundary condition method is proposed. By using the improved strong implicit method (MSIP) , The stability and accuracy of multi-row impeller numerical simulation are improved.Through the calculation of the steady three-dimensional flow field of a pair of axial-flow fans and the comparison with the design parameters and experimental performance parameters, the verification is carried out In the design of fans / compressors, it is not advisable to allocate the maximum load in the tip region. This design is particularly detrimental to the rotary-axis flow compression system