第三代三维叶片技术思路分析  

The Way to the Third Generation of 3-D Blades

作　　者：季路成[1] 李嘉宾[1] 伊卫林[1] 

机构地区：[1]北京理工大学大学宇航学院,北京100081

出　　处：《工程热物理学报》2015年第5期989-994,共6页Journal of Engineering Thermophysics

基　　金：自然科学基金(No.51176012;No.51376023)

摘　　要：叶轮机已历经两代三维叶片发展:分别强调"基元叶型"和"掠弯积叠",较为有效地解决了基元叶栅负荷能力和展向势流匹配两大问题。那么,接下来三维叶片还能按何种技术思路继续发展?围绕该问题,本文首先简要回顾了叶轮机三维叶片技术发展历史及其对应解决的流动问题,然后分析了端区主要流动结构,指出组织好端区复杂流动是三维叶片进一步发展的出发点,并提出以叶片/端壁融合、前缘边条叶片为主要特征的第三代三维叶片技术思路.Following the two generations of the three-dimensional(3-D) blading which respectively emphasized 'cascade profiles' and 'sweep/lean stacking',the aeroload of blade is reaching its limit,and the performance of turbomachinery becomes better and better.Then,what is the way for the further development of tubomachinery blading? The paper briefly reviews the history of 3-D blading technology first,then analyses the complex flow structures in the end wall region of 3-D blade passage.It is pointed out,the management of the complex flow structures in the end wall region is the key to reach a new generation of 3-D blading.Finally,the paper presents a scheme of the third generations of 3-D blading characterized by Blended Blade and End Wall(BBEW) and Leading Edge Strake Blade(LESB) technologies.

关 键 词：三维叶片 掠弯叶片 叶片/端壁融合 前缘边条叶片 叶轮机 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]