Application of Phase-Locked PIV Technique to the Measurements of Flow Field in a Turbine Stage

作     者：ZHANG Zhenyang MA Hongwei ZHANG Zhenyang;MA Hongwei

作者机构：School of Energy and Power EngineeringBeihang UniversityBeijing 100191China TELLHOW SCI-TECH CO.LTD.Nanchang 330096China National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamicsBeihang UniversityBeijing 100191China 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2020年第29卷第3期

页      面：784-792页

核心收录：

学科分类：080703[工学-动力机械及工程] 080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：funded by the National Natural Science Foundation of China(Grant No.51776011) National Science and Technology Major Project(2017-V-0016-0068) 

主　　题：flow field measurement PIV(particle image velocimetry) phase-locking technique turbine inter-stage 

摘      要：For the purpose of improving turbine efficiency,a detailed investigation of flow field near rim seal region in the main annulus is absolutely *** flow egressed from the seal gap penetrates the hub boundary layer and travels along with the secondary flow in the main *** propagation of the purge flow and its influence on the turbine performance are crucial and cannot be neglected in the aerodynamic and thermal *** addition,the interaction of vane wake and blade potential field also has a significant impact on the turbine stage *** this study,flow field between inlet guide vanes(IGV)and rotor blades was experimentally investigated at specific positions with the help of a two-dimensional particle image velocimetry(2-D PIV).A phase-locking technique was also employed to capture the images of flow field at different rotor blade *** acquired characterizes the impact of emergent purge flow on the flow structures within the main *** impacts of vane wake and blade potential field on the flow fields were analyzed through characterizations provided by the time-averaged field ***,flow fields at different main flow rates and under different seal gap widths were also presented and assessed.