轴流通风机扩散筒损失的计算对比研究  

Research on the Calculation of Annular Diffuser Losses in Axial-flow Fan

作　　者：冯进 刘桂艳[2] 于德梅[2] 李景银[3] 谭磊[4] 

机构地区：[1]湘潭平安电气集团有限公司,湘潭市411100 [2]沈阳鼓风机(集团)有限公司 [3]西安交通大学能动学院 [4]清华大学热能工程系

出　　处：《风机技术》2008年第2期36-41,共6页Chinese Journal of Turbomachinery

基　　金：863计划资助项目(2006AA05Z250)

摘　　要：对30个不同的轴流通风机扩散筒模型进行了数值计算,其扩散角覆盖了2.9°～17°较广泛的范围,在相应的进口条件下,按数值模拟、当量直径和水力直径3种方法计算损失.对比结果表明:按水力直径和当量直径计算的结果都与数值结果不同,扩散筒损失的计算方法以数值计算为好.In this paper, 30 different annular diffusers' models whose diffusive angles cover from 2.9 to 17 degree are numerically calculated. The three methods of numerical simulation, formulas with hydraulic diameter and equivalent diameter for calculating losses are introduced under the relevant inlet condition. The comparison indicates that the calculation result with hydraulic diameter and equivalent diameter is different from numerical result. It is recommended to calculate diffuser losses with numerical calculation method.

关 键 词：轴流式通风机 扩散筒 总压损失 

分 类 号：TH432.1[机械工程—机械制造及自动化]