航空学报2025，Vol.46Issue(15)：116-128,13.DOI:10.7527/S1000-6893.2025.31534
高转速旋转篦齿流动与温升特性实验
Experiment on flow and windage heating characteristics of high-speed rotating labyrinth
摘要
Abstract
The performance of sealing labyrinth systems significantly impacts aero-engine efficiency and power con-sumption.a high-speed rotating test rig was designed and constructed.Based on the calibration of measurement pa-rameters from instruments,this study investigates the effects of geometric and aerodynamic parameters,especially the incoming flow temperature,on the leakage,windage heating,and swirl flow characteristics of a typical stepped-slanted labyrinth seal.The influence mechanism of each parameter on sealing performance is quantitatively analyzed.Experimental results show that at rotating Mach numbers of 0 to 0.557 and pressure ratios of 1.1 to 2.0,the seal clearance increases from 0.17 mm to 0.61 mm,and discharge coefficient initially decreased and then increased.At a rotating Mach number of 0.348 and a pressure ratio of 1.1,increasing the inlet temperature from 16.5 ℃ to 100 ℃ re-sults in a 49.4％increase in the windage heating coefficient.At a design clearance of 0.6 mm and a pressure ratio of 2.0,windage heating coefficient increases by 105.9％,from 0.371 to 0.764,as rotating Mach number increases.Concurrently,outlet swirl ratio exhibits a 14.8％increase.The discharge coefficient exhibits a linear increase with in-creasing pressure ratio,whereas windage heating coefficient and outlet swirl ratio both decrease as the pressure ratio increases.For a design clearance of 0.6 mm and a rotating Mach number of 0.418,increasing the pressure ratio from 1.1 to 2.0 results in a 26.5％increase in the discharge coefficient,while the windage heating coefficient and out-let swirl ratio decrease by 27.9％and 11.1％,respectively.关键词
航空发动机/篦齿封严/泄漏特性/温升特性/旋流特性Key words
aero-engine/labyrinth seal/leakage characteristic/windage heating characteristic/swirl flow characteristic分类
航空航天引用本文复制引用
王志伟,查天衡,刘博文,陈燕,林阿强,刘高文..高转速旋转篦齿流动与温升特性实验[J].航空学报,2025,46(15):116-128,13.基金项目
国家自然科学基金(52476091) （52476091）
航空科学基金(2024M070053001) （2024M070053001）
中国博士后科学基金(2025T181167) （2025T181167）
泰山产业领军人才工程 National Natural Science Foundation of China(52476091) （52476091）
Aeronautical Science Foundation of China(2024M070053001) （2024M070053001）
China Postdoctoral Science Foundation(2025T181167) （2025T181167）
Taishan Industrial Experts Program （）
