| 低压涡轮低雷诺数条件下气动性能分析 |
| |
| 引用本文： | 王松涛,刘勋,周逊,冯国泰,王仲奇.低压涡轮低雷诺数条件下气动性能分析[J].汽轮机技术,2011,53(5). |
| |
| 作者姓名： | 王松涛 刘勋 周逊 冯国泰 王仲奇 |
| |
| 作者单位： | 哈尔滨工业大学发动机气体动力研究中心,哈尔滨,150001 |
| |
| 基金项目： | APTD(航空推进技术验证计划)某咨询项目 |
| |
| 摘 要： | 对某型航空发动机低压涡轮末级进行了数值计算,对比分析了不同雷诺数条件下该级涡轮的气动性能。通过计算分析低雷诺数条件对压力场和损失系数的影响,可以看出,与高雷诺数条件相比,在低雷诺数条件下,低压涡轮效率明显降低,损失增大,扩压段增加,横向压力梯度增加,附面层增厚。雷诺数的降低,导致黏性力增加,在静叶片吸力面出现分离区,而且随着雷诺数的降低,分离区加大。
|
| 关 键 词： | 低雷诺数 涡轮 数值模拟 气动性能 |
Aerodynamic Performance Analysis of Low Pressure Turbine at Low Reynolds Numbers |
| |
| WANG Song-tao,LIU Xun,ZHOU Xun,FENG Guo-tai,WANG Zhong-qi.Aerodynamic Performance Analysis of Low Pressure Turbine at Low Reynolds Numbers[J].Turbine Technology,2011,53(5). |
| |
| Authors: | WANG Song-tao LIU Xun ZHOU Xun FENG Guo-tai WANG Zhong-qi |
| |
| Affiliation: | WANG Song-tao,LIU Xun,ZHOU Xun,FENG Guo-tai,WANG Zhong-qi(Engine Aerodynamics Research Center,Harbin Institute of Technology,Harbin 150001,China) |
| |
| Abstract: | This paper calculated the last stage of a low pressure turbine and compared and analyzed the aerodynamic performance at different Reynolds Numbers.By calculating and analyzing the impact of low Reynolds numbers for pressure field and loss coefficients,compared with that at high Reynolds numbers,we can see that at low Reynolds numbers,efficiency of low pressure turbine decreases significantly;losses increases;diffuser section increases;transverse-pressure gradient increases;boundary layer incrassates.As the ... |
| |
| Keywords: | low Reynolds number turbine numerical simulation aerodynamic performance |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
