Theoretical and Experimental Studies for the Transient Response of Cavity

作     者：HU Jianping LIU Zhenxia ZHU Pengfei LYU Yaguo HU Jianping;LIU Zhenxia;ZHU Pengfei;LYU Yaguo

作者机构：School of Power and EnergyNorthwestern Polytechnical UniversityXi’an 710129China Shaanxi Key Laboratory of Internal Aerodynamics in Aero-EngineXi’an 710129China 

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

年 卷 期：2020年第29卷第1期

页      面：232-240页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

主　　题：secondary air system static cavity rotating cavity transient response experiment 

摘      要：During the transient state of aero-engine,cavity has evidently transient characteristics in the secondary air *** investigate transient characteristics,theoretical and experimental studies were implemented for both static and rotating *** of all,the typical transient response phenomena in secondary air system were investigated based on the basic concepts of the dynamic *** to the basic theory of gas dynamics,the causes of transient phenomena were analyzed in two aspects,external disturbance,and system physical *** dimensionless parameters were introduced to analyze the transient response characteristics of air ***,the experimental results of the static cavity indicated that the actual response time increased with the increase of the inlet *** experimental results of the rotor-stator cavity showed that the low rotational speed on the response process had little effect,and the response time gradually increased when the speed continued to ***,the test results of multiple components suggested that when the valve was opening the inlet pressure of the static cavity increased quickly and then reached a stable value,but the pressure of the static cavity,stable pressure cavity and rotor-stator chamber rose *** was also obtained the actual response time of them was *** closer the measuring points were to the disturbance source,the shorter the delay time was.