叶顶间隙和导流罩的安装位置对轴流风机流场的影响研究  

Research on Effect of Blade Tip Clearance and Installation Position of Guide Vane on Flow Field of Axial-flow Fan

作　　者：黄海鸿 陆月星 HUANG Hai-hong;LU Yue-xing(Hefei University of Technology, Hefei 230009, Chin)

机构地区：[1]合肥工业大学,安徽合肥230009

出　　处：《流体机械》2018年第4期34-39,共6页Fluid Machinery

基　　金：国家自然科学基金资助项目(51346004)

摘　　要：为研究由换热器和轴流风机组合而成的矩形流道的内流场,合理匹配轴流风机与矩形流道的特性,提升轴流风机的气动性能,通过改变导流罩和风机之间的径向间隙以及风机出口轮毂端面距导流罩出口端面的距离,利用数值模拟方法对轴流风机的流场特性进行分析,并通过试验验证了数值模拟的正确性。结果表明:当导流罩与轴流风机的径向间隙为2 mm,风机出口轮毂端面距导流罩出口端面的距离为0 mm时,效率相对最高,提升幅度分别为82.67%和55.88%,同时风机出口轮毂端面距导流罩出口端面的距离为0 mm的出口静压相对最大。In order to research the internal flow field of the rectangular flow channel formed by combination of heat exchanger and axial flow fan,rationally match the characteristics of axial flow fan and the rectangular flow channel and improve the aerodynamic performance of axial flow fan,the characteristics of flow field of axial flow fan were analyzed by changing the radial clearance between the fan cowl and the fan and the distance between hub end face of fan exit and exit end face of the fan cowl and using the numerical simulation method,and the correctness of numerical simulation was verified by experiment.The results show that when the radial clearance between the cowl and the axial flow fan is 2 mm and the distance between hub end face of fan exit and end face of fan cowl is 0 mm,the efficiency is highest relatively,an increase of 82.67% and 55.88% in amplitude,respectively,at the same time,the exit static pressure is biggest relatively when the distance between hub end face of fan exit and end face of fan cowl is 0 mm.

关 键 词：轴流风机 导流罩 叶顶间隙 流场特性 气动性能 

分 类 号：TH45[机械工程—机械制造及自动化] TH401