首页 | 官方网站   微博 | 高级检索  
     

前缘气膜孔布局对涡轮转子叶片流动传热的影响
引用本文:吴向宇,丁新星,谢建文,张志述,韩绪军.前缘气膜孔布局对涡轮转子叶片流动传热的影响[J].航空发动机,2017,43(3):5-9.
作者姓名:吴向宇  丁新星  谢建文  张志述  韩绪军
作者单位:中国航发沈阳发动机研究所,沈阳110015
摘    要:为了研究不同前缘气膜孔布局对叶片内部冷却系统、温度场分布的影响,针对某典型冲击-对流-气膜复合冷却高压涡轮转子叶片,保持叶片主体冷却结构不变,通过改变叶片前缘各列气膜孔的数量形成5种结构方案,完成了1维流动换热及3维有限元温度场计算。并模拟发动机工况,试验研究了叶片内腔流量特性、叶片中下部2个截面的平均冷却效果随压比、流量比的变化规律。计算及试验结果均表明:涡轮转子叶片前缘气膜孔数量及布局对叶片前腔冷气量、前缘温度分布影响明显,而对后腔冷气量、尾缘温度影响较小。

关 键 词:气膜冷却  涡轮转子叶片  流量特性  冷却效果    航空发动机

Influence of Leading Edge Film Holes Layout on Turbine Rotor Blade Flow and Heat Transfer Characteristics
Authors:WU Xiang-yu  DING Xin-xing  XIE Jian-wen  ZHANG Zhi-shu  HAN Xu-jun
Affiliation:AECC Shenyang Engine Research Institute, Shenyang 110015, China
Abstract:In order to investigate the influence of different leading edge film holes layout on the internal cooling system and metal temperature distribution, a typical impinging -convection- film cooling high pressure turbine rotor blade were carried out. One dimensional flow heat transfer and three dimensional finite element temperature prediction were accomplished for five different schemes, which the number of film holes of each column in leading edge was changed respectively and the main body cooling structure of blade maintain unchanged. Tests were performed under simulated real engine operating conditions. The internal flow characteristics and the average cooling effectiveness of two sections of the blade were studied with different pressure ratio and flow ratio. Both the calculation and experiment results show that the number of the film holes and the layout of the holes in the leading edge of the turbine rotor blades have a significant effect on cooling air flow of the front cavity and leading edge temperature distribution, and the influence on cooling air flow of back cavity and trailing edge temperature distribution are slight
Keywords:film-cooling  turbine blade  flow characteristics  cooling effectiveness  aeroengine
本文献已被 CNKI 等数据库收录!
点击此处可从《航空发动机》浏览原始摘要信息
点击此处可从《航空发动机》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号