摘要
热痕严重影响涡轮叶片热负荷及寿命.本文在缘线匹配技术的指导下,以某1+1对转涡轮为研究对象,采用数值模拟手段研究了热痕的温度分布形式、周向位置及叶排之间的时序位置等因素对涡轮热环境的影响.结果表明,热痕/叶排以及叶排/叶排的时序位置对第三排叶片表面的时均温度分布影响较大,优化叶片参数和时序位置是改善涡轮热环境的有效手段.
The hot streak has significant influence on the heat load and life of turbine blades. Under the guidance of Edge-Matching technology, numerical simulation was carried out to investigate impacts of the factors, which included forms and circumferential locations of hot streak and clocking positions of blade rows, on the thermal environment for a 1＋1 counter-rotating turbine in this paper. Results clearly indicate that clocking positions of hot streak/blade row and blade row/blade row have great influences on the time-averaged temperature distribution of the third blade row. Therefore, it is effective to improve thermal environment of turbine by the optimization of blade parameters and clocking positions.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2008年第5期751-754,共4页
Journal of Engineering Thermophysics
基金
国家高技术研究发展计划(863项目)(No.2006AA05A104)
国家重点基础研究发展计划(973项目)(No.2007CB210103)
关键词
热痕
缘线匹配
对转涡轮
非定常流动
数值模拟
hot streak
edge-matching
counter-rotating turbine
unsteady flow
numerical simulation
