叶片扩压器进口安装角对离心压缩机性能影响的数值与实验研究  

NUMERICAL AND EXPERIMENTAL STUDY OF THE EFFECTS OF THE STAGGER ANGLES OF VANE DIFFUSER ON THE PERFORMANCE OF CENTRIFUGAL COMPRESSORS

作　　者：席光[1] 周莉[1] 丁海萍[1] 袁民建[1] 张春梅 

机构地区：[1]西安交通大学能动学院,陕西西安710049

出　　处：《工程热物理学报》2006年第1期61-64,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50276047)

摘　　要：对不同扩压器进口安装角下离心压缩机的性能进行了实验研究,并详细计算分析了相应的流场分布。分析表明, 不同的进口安装角对压缩机的流动有较大的影响,压缩机的性能曲线也有不同程度的左右偏移;进口处较大的正冲角和负冲角均会在扩压器叶片表面出现大尺度的分离涡团;在给定的流量工况下,应存在一个最佳的进口安装角,使得扩压器效率最高;设计工况下,最高效率所对应的冲角并非为零。The performance maps of the centrifugal compressor under different diffuser stagger angle are measured, and the influence of different stagger angles of vanes on the stage performance as well as flow field is investigated. The study shows the performance map shifts when the diffuser stagger angle is altered; the influence of different stagger angles of vanes on the flowfiled inside centrifugal compressor is great, and large scale vortices appear on the diffuser vane under large incidence; a optimal diffuser stagger angle should exist at a fixed mass flow rate to make the diffuser have highest efficiency; the incidence corresponding to the highest efficiency is not zero at the design condition.

关 键 词：叶片扩压器 进口安装角 性能曲线 冲角 

分 类 号：TK474[动力工程及工程热物理—动力机械及工程]