基于N边曲面的混流式转轮叶片精确建模研究  

Research on Accurate Modeling of Mixed Flow Turbine Blades Based on N Boundary Surface

作　　者：候洁[1] 宋文武[1] 金永鑫[2] 石建伟[1] 

机构地区：[1]西华大学能源与动力工程学院,四川成都610039 [2]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013

出　　处：《水力发电》2017年第7期76-79,共4页Water Power

摘　　要：基于混流式转轮叶片空间扭曲、三维建模难以精确化等特点,本文探索出一种新的、快速的转轮叶片三维精确建模方法。以典型的混流式水轮机X型叶片和λ型叶片为例,详述了基于N边曲面进行叶片三维精确建模的方法。并分析对比了新的建模方法和常用方法的不同,同时对水轮机叶片模型进行表面光顺性分析和斜率分析,为后续的CFD分析及数控加工等提供了精确的三维模型。In view of the characteristics of space distortion and difficult 3D accurate modeling of Francis turbine blade, a new method tbr 3D accurate modeling of runner blade is explored. Taking typical X type blade and A type blade of Francis turbine as examples, the method based on N boundary surface of 3D accurate modeling of blade is described in detail. The new modeling method and other common methods are compared, and at the same time, the surface smoothness and slope of turbine blade model are analyzed for providing accurate three-dimensional models for subsequent CFD analysis and NC machining.

关 键 词：N边曲面 混流式转轮 X型叶片 三维模型 精确模型 

分 类 号：TK730.323[交通运输工程—轮机工程] TK733.1[动力工程及工程热物理—流体机械及工程]