稠度和弯角在高亚音扩压叶栅中的耦合作用  

Effect of Solidity and Dihedral Angle in High Subsonic Compressor Cascades

作　　者：陶船斯嘉 杜鑫[1] 王松涛[1] 王春雪[2] 王仲奇[1] TAO Chuan-si-jia;DU Xin;WANG Song-tao;WANG Chun-xue;WANG Zhong-qi(Harbin Institute of Technology,Harbin 150001,China;Beijing Power Machinery Institute,Beijing 100074,China)

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001 [2]北京动力机械研究所,北京100074

出　　处：《节能技术》2022年第6期483-487,共5页Energy Conservation Technology

基　　金：国家自然科学基金资助项目(51906049)。

摘　　要：为了探索弯叶片的适用条件,本文通过对不同高亚音扩压叶栅进行数值模拟,探究弯叶片叶栅中稠度和弯角对叶栅气动性能参数以及流场典型结构的影响。在50°折转角、子午收缩比为0.8的扩压静叶栅中,分析变冲角特性(包括总压损失、扩压因子等)随稠度和弯角的迁移。在最小损失冲角工况下,总结弯角、稠度对叶栅气动性能的影响规律。结果表明,稠度增加使最小损失冲角及此工况下的总压损失系数增加,但扩压因子变化不显著。叶展中部损失增加和端区损失降低的相对大小决定了总损失的变化。稠度增加时,对应的最佳弯角增大。通过稠度和弯角的合理匹配,可以在不同扩压叶栅中改善气动性能和角区分离。In order to explore the applicable conditions of curved blades,this paper conducts numerical simulation on different high subsonic compressor cascades to study the effects of solidity and dihedral angle on the aerodynamic performance and flow field structure of the cascade.In a stator cascade with a camber angle of 50°and a meridional contraction ratio of 0.8,the migration of incidence characteristics(including total pressure loss,diffusion factor,etc.)with solidity and dihedral angle is analyzed.At the incidence angle with minimum loss,the influence of solidity and dihedral angle on the cascade aerodynamic performance is summarized.The results show that the incidence angle with minimum loss and the minimum loss increase with the rise of solidity,and the diffusion factor changes slightly.The relative magnitude of the increase of the mid-span loss and the decrease of the loss near the end determines the change of the total loss.When the solidity increases,the corresponding optimal dihedral angle increases.The aerodynamic performance and corner separation can be improved in different compressor cascades through reasonable matching of solidity and dihedral angle.

关 键 词：高亚音 弯叶片 稠度 角区分离 变冲角特性 

分 类 号：TH133[机械工程—机械制造及自动化] TP183[自动化与计算机技术—控制理论与控制工程]