| 复杂空冷叶片换热特性研究 |
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| 引用本文： | SU Sheng,胡捷,LIU Jian-jun,安柏涛.复杂空冷叶片换热特性研究[J].燃气涡轮试验与研究,2008,21(3). |
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| 作者姓名： | SU Sheng 胡捷 LIU Jian-jun 安柏涛 |
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| 作者单位： | 1. 中国科学院,工程热物理研究所,北京,100190;中国科学院研究生院,北京,100190
2. 中国科学院,工程热物理研究所,北京,100190 |
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| 摘 要： | 为了深入了解空冷透平动叶的冷却机理和冷气流动特性，对某重型燃机透平动叶进行了气-热耦合数值模拟。结果表明，叶尖开孔可以促进冷气在蛇形通道中的流动，改善冷却效果；涡流矩阵通道中子通道的宽度与高度比减小会加大涡流矩阵通道中的流动阻力，从而改变冷却的效果，其宽高比与冷气进口条件存在一个最佳组合关系；涡流矩阵通道结构与叶尖之间的间隙会降低冷气的利用率。
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| 关 键 词： | 空冷叶片 气热耦合 叶尖孔 蛇形带肋通道 涡流矩阵通道 叶尖内部间隙 |
Calculations of Heat Transfer in an Air-cooled Blade |
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| SU Sheng,HU Jie,LIU Jian-jun,AN Bai-tao.Calculations of Heat Transfer in an Air-cooled Blade[J].Gas Turbine Experiment and Research,2008,21(3). |
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| Authors: | SU Sheng HU Jie LIU Jian-jun AN Bai-tao |
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| Institution: | SU Sheng1,2,HU Jie1,LIU Jian-jun1,AN Bai-tao1(1.Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100080,China,2.Graduate University of Chinese Academy of Sciences,China) |
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| Abstract: | This paper describes conjugate calculations of a turbine blade.The effects of different internal cooling configurations are as following.Firstly,tip holes can improve the cooling in serpentine passage by improving fluid flow at the U turning.Secondly,a smaller width to height ratio of latticework sub-channels increases coolant flow resistance,and this change in configuration will impose totally different impact on cooling efficiency of latticework and trailing edge.This ratio should be optimized according t... |
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| Keywords: | air-cooled blade conjugate heat transfer tip hole rib-roughened serpentine passage latticework passage clearance inside blade between latticework and blade tip |
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