摘要
变几何涡轮技术是有效提高燃气轮机加减速特性和低工况性能的技术手段之一,但变几何涡轮设计难度大,其设计状态效率总是低于固定几何涡轮,并且可调静叶无论开大或关小,涡轮效率皆有明显降低,这部分抵消了涡轮变几何带来的燃气轮机循环收益.为了将涡轮变几何技术成功地应用于船舶等燃气轮机,开展高效变几何涡轮气动技术的研究自然具有非常现实的国防意义和重要的工程应用前景.本文主要从变几何涡轮特性、变几何涡轮端区流动机理及损失控制和变几何涡轮设计特点等方面对燃气轮机变几何涡轮气动技术的研究进展进行综述.还对变几何涡轮研究存在的问题进行了系统总结,并展望了变几何涡轮气动技术的未来研究重点和发展趋势.
The variable geometry turbine technology is one of the effective ways to improve acceleration and deceleration characteristics and low-working-condition performance for gas turbines. However, the design of variable geometry turbines is very difficult, and its design point efficiency is always lower than that of fixed geometry turbines. Moreover, regardless of whether the variable vane is open or closed, the turbine efficiency is significantly reduced, which partially offsets the gas turbine cycle benefits caused by turbine variable geometry. In order that the turbine variable geometry technology can be successfully applied to marine and other gas turbines, the research on the high-efficiency variable geometry turbine aerodynamic technology naturally has very realistic significance of national defense and important engineering application prospects. The development of the research about gas turbine variable geometry turbine aerodynamic technology is reviewed in three aspects： variable geometry turbine characteristics, variable geometry turbine endwall flow mechanisms and loss control as well as variable geometry turbine design features. Besides, the existing issues for variable geometry turbine researches are systematically summarized, and the key trends and future research priorities regarding gas turbine variable geometry turbine aerodynamic technology are presented.
作者
高杰
郑群
岳国强
董平
姜玉廷
GAO Jie;ZHENG Qun;YUE GuoQiang;DONG Ping;JIANG YuTing(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《中国科学：技术科学》
EI
CSCD
北大核心
2018年第11期1141-1150,共10页
Scientia Sinica(Technologica)
基金
国家自然科学基金(批准号:51779051
51406039)
中央高校基本科研业务费专项资金面向国家重大需求培育计划(编号:HEUCFP201720)
黑龙江省自然科学基金(编号:QC2016059)资助项目
关键词
变几何涡轮
子午扩张
间隙泄漏流
全工况
气动设计
variable geometry turbine
high casing-endwall angle
tip leakage flow
full working condition
aerodnamic design
