摘要
涡轮盘腔封严特性对于指导燃气轮机二次空气系统及封严结构设计具有重要作用,而盘腔内三维非定常流动与其密切相关,人们通过开展大量针对涡轮盘腔的封严特性与流动机理研究,分别从定量和定性的角度对涡轮盘腔的内部流动进行了刻画。随着涡轮前温度不断提升和精细化设计理念的逐步深入,相关工作受到越来越多的关注。该文基于广泛的国内外文献调研,分别就旋转诱导、外部诱导和复合诱导下的盘腔封严特性,涡轮盘腔定常流动图谱,以及盘腔内部的非定常流动等进行介绍,同时对向心涡轮背部盘腔研究现状进行概述,最后总结并提出未来相关研究工作的展望。
The rim-seal performance of the turbine has an important role in the design of the secondary air system and rim-seal structure of gas turbine,which is influenced by three-dimensional unsteady flow in the disc cavity.Studies of the sealing characteristics and flow mechanism were carried out by researchers to understand the cavity flow from quantitative and qualitative aspects.Related work has received more and more attention as the turbine inlet temperature rises and detailed design is needed.Based on extensive literature research,the article introduced rotation induced,external induced and combined sealing characteristics,the steady flow structure and unsteady flow inside the axial and radial turbine disc cavity.Further research work of rim-seal performance and flow mechanism in turbine cavity was addressed.
作者
尹钊
李耀阳
张华良
王嘉辉
陈海生
YIN Zhao;LI Yaoyang;ZHANG Hualiang;WANG Jiahui;CHEN Haisheng(Institute of Engineering Thermophysics,Chinese Academy of Sciences,Haidian District,Beijing 100190,China;University of Chinese Academy of Sciences,Haidian District,Beijing 100049,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2021年第20期7014-7026,共13页
Proceedings of the CSEE
基金
国家重点研发计划项目(2017YFB0903605)
国家自然科学基金青年科学基金项目(51806216)
中国科学院国际合作局国际伙伴计划(182211KYSB20170029)。
