轴流式叶型的Bezier曲线设计方法  

The Design Method Based on Bezier Curve for Axial Blade Profile

作　　者：王毅[1] 李华云 刘铁军[1,3] 

机构地区：[1]郑州航空工业管理学院航空工程系,河南郑州450046 [2]河南省产品质量监督检察院,河南郑州450008 [3]西北工业大学力学与土木建筑学院工程力学系,陕西西安710072

出　　处：《湘潭大学自然科学学报》2016年第4期58-61,共4页Natural Science Journal of Xiangtan University

基　　金：航空科学基金项目(2010ZF56016);河南省基础与前沿基金资助项目(072300440080;11230041003;152300410125);河南省重点科技攻关项目(082102210016;152102210348)

摘　　要：为了避免型线曲率不连续所导致的气动损失,提出了一种基于Bezier曲线曲率优化的平面叶栅设计方法,包括对气动性能有显著影响的进出口几何构造角、喉部宽度、弯折角,对强度影响较大的前/尾缘半径、最大内切圆半径、位置等14个独立参数.对平面叶栅的压力面、吸力面型线等进行了设计分析.为保证其光顺性,采用优化设计的方法调整内切圆半径的夹角,实现了压力面、吸力面型线的曲率连续,完成了平面叶栅的设计.进行了多种叶型的设计和气动分析,验证了设计方法的有效性.分析结果表明文中提出的方法可以灵活地进行平面叶栅的设计.In order to avoid the pneumatic loss caused by blade profile curvature discontinuities,the paper proposes a plane cascade design method based on curvature optimization.It includes 14 independent parameters which have significant effects on the aero-dynamic performance.The import and export geometry angles,throat width,bend angle,have a greater impact on the strength of the front/trailing edge radius,maximum inscribed circle radius,location,etc.Segmented Bezier curve characterize the pressure surface,the suction surface profile of the plane cascade.To ensure its smoothness,the use of optimization-based approach through the inner radius of the inscribed circle angle adjustment can achieve a pressure surface,the suction surface profile curvature continuous,plane cascades were designed.The results show that the method proposed in this paper can flexiblely design plane cascade.

关 键 词：平面叶栅 最大内切圆 喉部宽度 曲率优化 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]