叶片尾缘形状对离心风机气动性能影响的研究  

The Investigations on Influence of the Blade Trailing Edge Shape on the Aerodynamic Performance of A Centrifugal Fan

作　　者：王枭 常超 王弼 孙丽娟 陈启明 胡四兵 Xiao Wang;Chao Chang;Bi Wang;Li-juan Sun;Qi-ming Chen;Si-bing Hu(Hefei General Machinery Research Institute Co.,Ltd.,Anhui Key Laboratory of General Mechanical Composite Technology,State Key Laboratory of Compressor Technology)

机构地区：[1]合肥通用机械研究院有限公司,安徽省通用机械复合材料技术重点实验室,压缩机技术国家重点实验室

出　　处：《风机技术》2022年第S01期1-4,共4页Chinese Journal of Turbomachinery

基　　金：国机集团国家级研发平台能力提升项目(2021010942)。

摘　　要：采用CFD方法对某离心风机流场进行计算,首先将计算所得的风机总压升和效率与试验数据进行对比,验证了计算方法的准确性和可靠性。再对比计算不同叶片尾缘形状对风机气动性能的影响,通过叶轮流场速度矢量和相对马赫数的分布,对比各计算模型之间的差别,得出结论:椭圆型尾缘有助于改善叶片出口流动,提高叶轮效率,但也会导致叶轮总压升的降低。The CFD method was used to calculate the flow field of a centrifugal fan.The total pressure rise and efficiency of the numerical results were compared with the experimental data,which verified the accuracy and reliability of the calculation method.Comparing the different blade trailing edge shapes effect on fan aerodynamic performance,the difference of different calculation model of impeller is analyzed by the distribution of velocity vector and the relative Mach number.The conclusions show that oval trailing edge is helpful to improve blade export flow and the efficiency of the impeller,but cause impeller total pressure rise.

关 键 词：离心风机 叶轮 尾缘形状 气动性能 流场 

分 类 号：TH432[机械工程—机械制造及自动化]