安装角及表面粗糙度影响涡轮叶栅损失不确定度的研究  

Study on Influence of Stagger Angle and Roughness on Uncertainty of Turbine Cascade Loss

作　　者：高云飞 韩颖 史田阔 GAO Yunfei;HAN Ying;SHI Tiankuo(School of Energy and Power,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Beijing Star Glory Technology Co.,Ltd.,Beijing 100176,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016 [2]北京星际荣耀科技有限公司,北京100176

出　　处：《机械制造与自动化》2023年第5期111-114,共4页Machine Building & Automation

摘　　要：安装、加工等误差对涡轮叶片损失的影响不可忽略。假定某涡轮叶栅安装角误差在±3°范围内满足高斯分布N-(62,1)、表面粗糙度在1~12μm范围内满足矩形分布R(1,12),采用蒙特卡洛法和GUM方法分析叶片安装角和叶片表面粗糙度对数值计算涡轮叶栅总压损失系数误差特征的影响。研究结果表明:蒙特卡洛方法获得的总压损失系数区间更合理。The influence of installation and machining errors on turbine blade loss can not be ignored.Assumed that the installation angle error of a turbine meets the Gaussian distribution N~(62,1)in the range of±3° and the roughness meets the rectangular distribution R(1,12)in the range of 1~12μm,the effects of blade installation angle and blade surface roughness on the error characteristics of numerical calculation of turbine total pressure loss coefficient are analyzed by Monte Carlo method and GUM method.The research results show that the interval of total pressure loss coefficient obtained by Monte Carlo method is more reasonable.

关 键 词：涡轮叶栅 GUM法 蒙特卡罗法 安装角 表面粗糙度 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程] TH161.1[机械工程—机械制造及自动化]