检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:但玥 王浩浩 高丽敏[1,2] 黄萍 唐凯 DAN Yue;WANG Hao-hao;GAO Li-min;HUANG Ping;TANG Kai(School of Power and Energy,Northwestern Polytechnical University,Xi’an 710072,China;National Key Laboratory of Aerodynamic Design and Research,Northwestern Polytechnical University,Xi’an 710072,China;AECC Sichuan Gas Turbine Establishment,Chengdu 610000,China)
机构地区:[1]西北工业大学动力与能源学院,陕西西安710072 [2]西北工业大学翼型、叶栅空气动力学国家级重点实验室,陕西西安710072 [3]中国航发四川燃气涡轮研究院,四川成都610000
出 处:《推进技术》2023年第10期84-91,共8页Journal of Propulsion Technology
基 金:国家自然科学基金面上项目(51790512)。
摘 要:在压气机叶片加工过程中,受切削力等因素影响扭转变形不可避免。为探究扭转度误差对叶片气动性能的影响,将实测某压气机叶片扭转度误差数据应用于Rotor 37转子,创建误差叶片,通过数值模拟获得其设计转速下的性能参数。结果表明:相较于原叶片,“欠偏转”叶片特性曲线整体向小流量工况移动,反之,“过偏转”叶片特性曲线则向大流量工况移动,且各方案对应误差叶片的气动性能均合格;在设计工况下,随扭转度误差变化,总压比较等熵效率变化更显著,其中“欠偏转”叶片总压比减小,最大变化量为0.85%;此外,相较于原叶片,“欠偏转”叶片稳定工作裕度增大,其最大变化量可达12.29%,同时,“欠偏转”叶片通道激波延后,流动损失减小,且叶顶低速区范围减小,即在公差范围内,负扭转度误差对气流流动状态具有一定改善作用。In the process of compressor blade machining,twist deformation is inevitable due to cutting force and other factors.To explore the effects of twist angle error on blade aerodynamic performance,the measured twist angle error of a compressor blade was applied to Rotor 37 to create the blades with error,and the performance parameters under the design rotating speed were obtained by numerical simulation.The results show that:compared with the original blade,the characteristic curve of under-deflection blades moves to the low-flow condition as a whole,which moves to the high-flow condition as the blades are over-deflection.And the aerodynamic performance of the corresponding blades of each twist scheme is qualified.Under the design condition,the total pressure ratio changes more significantly than the isentropic efficiency with twist angle error changing,and the total pressure ratio decreases when the blades are under-deflection whose maximum variation is 0.85%.Additionally,the stable working margin increases when the blades are under-deflection,whose maximum variation is 12.29%compared with the original blade.At the same time,the channel shock wave is delayed,the flow loss is reduced,and the range of low-speed area at the blade tip decreases as the blades are under-deflection.It indicates that the negative twist angle error within tolerance has a certain improvement effect on the flow condition.
关 键 词:跨声速压气机叶片 扭转度 加工误差 稳定工作裕度 激波
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]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:3.131.93.117