高负荷压气机叶栅分离与流场结构研究  

INVESTIGATION OF SEPARATION AND FLOW FILED STRUCTURE IN HIGH-LOADING COMPRESSOR CASCADES

作　　者：陈浮[1] 陈绍文[1] 郭爽[1] 王仲奇[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《工程热物理学报》2008年第1期49-51,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50646021);高等学校博士学科点专项科研基金(No.20060213007)

摘　　要：通过流动显示及静压测量,对不同冲角下、三种叶型弯角的环形压气机直、弯叶栅近壁面区域的流动分离及旋涡结构进行了实验研究。结果表明,近吸力面的气泡分离与转捩取决于叶栅型面静压分布;随叶栅负荷增大,流动分离形式由闭式分离逐渐向开式分离发展,流动分离的对称性逐渐减弱;减少涡系与涡系、涡系与附面层之间的相互作用及掺混可以有效拓宽正弯叶片的应用范围。The experimental study of annular compressor cascades with three large camber angles at different incidences is carried out by measuring the static pressure and ink-trace flow visualizations for analyzing flow separation and vortex structure near wall. The results show the bubble separation and transition depend on the static pressure distribution on the blade surface. With increase of cascades loading, separation form develops from closed separation to open separation, and the symmetrical characteristic is weakened gradually. The weakening interaction of vortex and vertex, vertex and boundary layer is effective on extend the applied range of bowed blade.

关 键 词：环形压气机叶栅 正弯叶片 高负荷 实验研究 

分 类 号：TK474.7[动力工程及工程热物理—动力机械及工程]