弯曲动叶对跨声速压气机转子气动性能与旋涡结构的影响  

Influences of curved rotor on the aerodynamics performance and vortex structure of transonic compressor rotor

作　　者：钟兢军[1] 刘军[1] 韩少冰[1] 

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026

出　　处：《大连海事大学学报》2016年第2期83-90,101,共9页Journal of Dalian Maritime University

基　　金：国家自然科学基金资助项目(51436002;51406021);辽宁省高校创新团队支持计划资助(LT2015004);辽宁省教育厅科学研究一般项目资助(L2014197);中央高校基本科研业务费专项基金资助项目(3132015208;3132014319)

摘　　要：在验证数值可靠性的基础上,利用商业软件NUMECA对跨声速压气机动叶弯曲造型并进行三维数值模拟.结果表明:叶片弯曲变形改变了型面静压分布、三维激波结构以及通道内旋涡结构.反弯曲改型设计在保证稳定工作范围和总压比的前提下绝热效率得到了提升,其提升效果随着弯高、弯角而变化,最高达1.3%.正弯曲改型设计使得转子气动性能降低,且随着弯高、弯角的增大,其性能恶化趋于严重.反弯曲设计叶顶激波后移且激波强度减弱,叶顶前缘压差的减小使得泄漏流及泄漏涡强度大大降低;相反,正弯曲设计叶顶激波前移激波强度增强,且大的叶顶前缘压差加剧了叶顶泄漏流动及泄漏涡强度.On the basis of validating the numerical reliability,the commercial software NUMECA was used to shape the transonic compressor rotor and three dimensional numerical simulation was carried out.Results show that the static pressure distribution on the wall surface and the structure of shock wave and vortex structure are changed as blade bending deformation.Under the premise of stable working range and total pressure ratio,the design of negative bending can improve efficiency and the promotion effects vary with bending height and angle,up to 1.3%as maximum.The design of positive bending make the rotor aerodynamic performance reduced,and become worse with higher bending height and angle.For negative bending design the tip shock wave moves backward and intensity becomes weak,the leakage flow and vortex is greatly reduced as the decrease of the differential pressure at the front of blade tip;on the contrary,for positive bending design as the shock wave moves forward and the intensity is enhanced,the tip leakage flow and vortex intensity is strengthened as the bigger differential pressure at the front of blade tip.

关 键 词：弯曲动叶 跨声速压气机转子 数值研究 旋涡结构 

分 类 号：TK474.8[动力工程及工程热物理—动力机械及工程]