基于Bezier曲线的涡轮叶片参数化造型及优化设计  

MODELING AND OPTIMIZATION FOR TURBINE BLADES BASED ON BEZIER CURVE

作　　者：张晓东[1] 余世敏[1] 龚彦[1] 杨文武[1] 周权[1] 

机构地区：[1]西南石油大学机电工程学院,成都610500

出　　处：《机械强度》2015年第2期266-271,共6页Journal of Mechanical Strength

基　　金：石油天然气装备教育部重点实验室(西南石油大学)开放基金资助项目(OGE201403-20)资助~~

摘　　要：定、转子叶片的结构设计决定着涡轮钻具的工作性能。基于Bezier曲线理论方法,结合Turbosystem系统,提出了一套涡轮叶片参数化造型、性能预测到优化设计的完整数值模拟方法,并与试验数据对比验证了该方法的可行性。以Φ127涡轮钻具为例,基于此数值模拟方法,根据速度场和压力场以及叶片输出特性对叶片进行了优化设计,结果表明,优化改善了涡轮叶片工作时压力面、吸力面的脱流和漩涡现象,输出扭矩平均提升了1.022 N·m,效率平均提高了6.14%,涡轮钻具的整体工作性能得到改善。研究可为涡轮钻具叶片的设计和优化提供新的思路和科学依据。The performance of turbodrill is determined by blade profile design. Based on Bezier curve, a complete numerical simulation method was proposed combined with Turbosystem, which was composed of blade modeling, performance prediction and optimization. Compared with test results, the numerical simulation method has been proved to be reliable. The turbodrill with diameter of 127 mm was taken for an example, to be optimized according to internal flow field and output characteristics. The simulation showed that the flow separation and vortex were decreased obviously under working condition, besides, the torque and efficiency were average increased 1. 022 N· m and 6. 14% respectively. Accordingly, hydraulic performance of turbodrill was improved. This study can provide a new perspective and basis for the design and optimization of turbodrill blades.

关 键 词：BEZIER曲线 涡轮叶片 Turbosystem系统 数值模拟 优化设计 

分 类 号：TB126[理学—工程力学] TE921.2[理学—力学]