Reheat effect on the improvement in efficiency of the turbine driven by pulse detonation

作     者：Junyu Liu Zhiwu Wang Zixu Zhang Junlin Li Weifeng Qin Jingjing Huang Junyu Liu;Zhiwu Wang;Zixu Zhang;Junlin Li;Weifeng Qin;Jingjing Huang

作者机构：School of Power and EnergyNorthwestern Polytechnical UniversityXi’an 710072China Shenzhen Research Institute of Northwestern Polytechnical UniversityShenzhen 518057China Mechanical Engineering CollegeXi’an Shiyou UniversityXi’an 710065China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2024年第31卷第1期

页      面：200-210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] 

基　　金：financially supported by the National Natural Science Foundation of China through Grant Nos.12372338 and U2241272 the Natural Science Foundation of Shaanxi Province of China through Grant Nos.2023-JC-YB-352 and 2022JZ-20 the Guangdong Basic and Applied Basic Research Foundation through Grant No.2023A1515011663 the Practice and Innovation Funds for Graduate Students of Northwestern Polytechnical University through Grant No.PF2023010 

主　　题：Pulse detonation turbine engine Hydrogen detonation Turbine efficiency Reheat effect Multi-cycle detonation 

摘      要：Due to the strong unsteadiness of pulse detonation,large flow losses are generated when the detonation wave interacts with the turbine blades,resulting in low turbine *** that the flow losses are dissipated into the gas as heat energy,some of them can be recycled during the expansion process in subsequent stages by the reheat effect,which should be helpful to improve the detonationdriven turbine *** this into account,this paper developed a numerical model of the detonation chamber coupled with a two-stage axial turbine,and a stoichiometric hydrogen-air mixture was *** improvement in turbine efficiency attributable to the reheat effect was calculated by comparing the average efficiency of the stages with the efficiency of the two-stage *** research indicated that the first stage was critical in suppressing the flow unsteadiness caused by pulse detonation,which stabilized the intake condition of the second stage and consequently allowed much of the flow losses from the first stage to be recycled,so that the efficiency of the two-stage turbine was *** a 95%confidence level,the efficiency improvement was stable at 4.5%—5.3%,demonstrating that the reheat effect is significant in improving the efficiency of the detonation-driven turbine.