中文摘要：

以带支撑架的小型轴流风扇为研究对象，通过响应面法建立以支撑架数量、直径和倾斜角度为自变量，以风扇的静压升和噪声为因变量的响应面模型，分析支撑架数量、直径和倾斜角度对小型轴流风扇静特性、气动噪声和内部流场特性的影响，进行流场优化和性能分析，然后在小型风洞中完成了静特性实验验证。结果表明：针对研究对象，当支撑架数量为7、支撑架直径为6mm、支撑架逆旋转方向倾斜60°时，风扇的性能最优；实验数据与数值计算结果吻合较好，验证了数值模拟的正确性。

英文摘要：

In this paper, small axial flow fan with struts is research object. Combined with the numerical simulation of flow field, effects of the number of struts, the diameter of strut and the tilt angle of strut on static characteristics, aerodynamic noise and internal flow field characteristics are analyzed. The response surface model that static pressure and noise are dependent variables when the number of struts, the diameter of strut and the tilt angle of strut are independent variables is established by response surface method. The optimization of flow field and the performance analysis are obtained. The results show that： the performance of fan is optimal when the number of struts is 7, the diameter is 6 mm and the struts reverse rotational direction tilted 60 degrees. The static characteristic experiment is performed in a small wind tunnel. For validation, the computational results are compared with the experimental data. There is excellent agreement between experiment and computation. The correctness of the analysis is verified.