叶片弯、扭、掠造型规律对透平级气动性能的影响  

Influence of Bent/Twisted/Swept Blade Profile on Aerodynamic Performance of Turbine Stage

作　　者：邱庆辉 付亚玮 李博 黄典贵[1] QIU Qinghui;FU Yawei;LI Bo;HUANG Diangui(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《动力工程学报》2023年第10期1285-1293,共9页Journal of Chinese Society of Power Engineering

基　　金：国家科技重大专项资助项目(J2019-II-0010-0030,Y2019-Ⅰ-0002-0003)。

摘　　要：基于动、静叶的最佳匹配原则,以改型后的某高压透平首级为研究对象,对静叶分别进行弯、扭、掠改型,并通过正交优化试验得到与静叶处于最佳匹配的动叶扭转规律,采用数值模拟的方法研究了不同的造型对流场的调控机理以及对透平气动性能的影响。结果表明:静叶正弯、反扭、后掠改型并匹配优化后的扭动叶,透平级总静效率和总总效率均有所提升,静叶中后部径向压力梯度和叶片出口熵增减小,静叶、动叶出口总压损失系数也减小。Based on the optimal matching principle of rotor blade and static blade,the modified first stage of a high pressure turbine was taken as a research object.The stator blade curves were modified by bent,twisted and swept profile respectively.The twisted rules of the rotor in the optimum matching with the stator were obtained through orthogonal optimization experiments.The numerical simulation method was used to study the influence of different blade profiles on the regulation mechanism of flow field and on the aerodynamic performance of the turbine.Results show that the total-static and total-total efficiency of the turbine stage are improved by modification with positive bent,anti-twisted and swept-back of stator blades and matching with the optimized twisted rotor blades.The radial pressure gradient in the middle and rear span of stator blades decreases,the stator blade outlet entropy increase is weakened,and the outlet total pressure loss coefficients of stator blades and rotor blades both decrease.

关 键 词：透平 弯-扭-掠 正交优化 数值模拟 

分 类 号：TK14[动力工程及工程热物理—热能工程]