| 二次流与叶顶间隙损失的数值研究 |
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| 引用本文： | 石宝龙,岂兴明,矫津毅,杨荣如. 二次流与叶顶间隙损失的数值研究[J]. 航空动力学报, 2009, 24(5): 1096-1100 |
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| 作者姓名： | 石宝龙 岂兴明 矫津毅 杨荣如 |
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| 作者单位： | 哈尔滨工程大学,动力与能源工程学院,哈尔滨,150009;中国舰船研究设计中心,武汉,430064;海军驻江南集团军代表室,上海,200028 |
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| 摘 要： | 叶顶间隙二次流在高压涡轮总损失中占据了较大比重.针对某型航空发动机的结构特点,研究了涡轮叶顶间隙结构对性能影响的机理.计算结果和实验数据吻合的较好.流场细节分析表明:在叶顶间隙流通面积相同情况下,台阶型、渐缩型间隙优于直线型,凸/凹型间隙效率最低;渐缩型间隙在叶片前半轴弦受到上通道涡的抑制,减少了叶顶间隙泄漏涡的强度和范围;凸型间隙在叶片前缘引起了流动分离,凹型间隙存在一高速区,增加了二次流损失.
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| 关 键 词： | 叶顶间隙 航空发动机 高压涡轮 二次流 数值分析 |
| 收稿时间： | 2008-09-27 |
| 修稿时间： | 2009-04-28 |
Numerical analysis of the secondary flow and tip clearance leakage loss |
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| SHI Bao-long,QI Xing-ming,JIAO Jin-yi and YANG Rong-yu. Numerical analysis of the secondary flow and tip clearance leakage loss[J]. Journal of Aerospace Power, 2009, 24(5): 1096-1100 |
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| Authors: | SHI Bao-long QI Xing-ming JIAO Jin-yi YANG Rong-yu |
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| Affiliation: | 1.College of Power and Energy Engineering, Harbin Engineering University, Harbin 150009, China2.China Ship Development and Design Center, Wuhan 430064, China3.Navy Military Preventives of Jiangnan Croup Limited, Shanghai 200028, China |
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| Abstract: | The secondary flow loss plays a main part in the total loss of high pressure turbine's(HPT).Based on the structure of one type aero-engine,this paper is focused on mechanic of the tip clearance structure,which influences the turbine characteristics.Numerical results agree well with the experiment data.The detailed information of the flow fields shows that,with the same tip clearance flow area,the step and shrink tip clearance shape perform better than line tip clearance shape,while the groove and bulge shap... |
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| Keywords: | tip clearance aero-engine high pressure turbine secondary flow numerical analysis |
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