用于汽轮机末级长叶片优化的前处理方法  

Pre-operation Technique for Last Stage Long Blade of Steam Turbine

作　　者：孙玺淼[1] 董学智[1] 王松涛[1] 王仲奇[1] 

机构地区：[1]哈尔滨工业大学推进理论及技术研究所,哈尔滨150001

出　　处：《汽轮机技术》2008年第4期251-252,共2页Turbine Technology

摘　　要：对由气动设计所得到的初始叶型,通过曲面蒙皮技术得到参数化曲面片,并将物理域边界统一成与叶片相同的参数曲面形式,建立求交点交线算法。通过提出几何拓扑关系和疏密系数,自动生成三维贴体网格。本方法可用于叶片较大弯扭的末级长叶片优化设计。For the last stage long bow blade profile, surface envelop technique is adopted to obtain the sectional blade profile with parameter surface model. Then the other normal boundary surfaces are united with the blade to be the same surface model and a subprogram is established to find the point or line of intersection. For the given geometrical topology and grid density coefficient, it can automatically generate 3D body -fitted grid. This technique can be used to the optimization of long blade.

关 键 词：末级长叶片 自由型曲面 贴体网格 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]