| 1+1/2对转涡轮非定常流动数值模拟 |
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| 引用本文： | 綦蕾,潘尚能,李维,邹正平,刘火星,周杨.1+1/2对转涡轮非定常流动数值模拟[J].航空动力学报,2010,25(8):1825-1835. |
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| 作者姓名： | 綦蕾 潘尚能 李维 邹正平 刘火星 周杨 |
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| 作者单位： | 1. 北京航空航天大学,能源与动力工程学院,航空发动机气动热力科技重点实验室,航空发动机数值仿真研究中心,北京,100191
2. 中国航空工业集团公司,中国航空动力机械研究所,株洲,412002 |
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| 摘 要： | 为了掌握对转涡轮内部的复杂流动以改进航空燃气轮机的设计,利用数值模拟手段对所设计的1+1/2对转涡轮内部非定常流动进行了研究,将定常和非定常结果进行了详细的对比分析,结果表明:非定常结果与定常结果相比出功比减小,总效率约减小0.44%,流量基本不变,其中尾迹、激波、位势作用以及泄漏流等因素之间的相互作用是影响非定常特性的主要因素.
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| 关 键 词： | 对转涡轮 非定常流动 尾迹 激波 位势作用 叶尖泄漏涡 |
| 收稿时间： | 7/6/2009 1:54:48 PM |
| 修稿时间： | 2/3/2010 11:26:45 PM |
Numerical simulation of unsteady flow in a vaneless counter-rotating turbine |
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| QI Lei,PAN Shang-neng,LI Wei,ZOU Zheng-ping,LIU Huo-xing and ZHOU Yang.Numerical simulation of unsteady flow in a vaneless counter-rotating turbine[J].Journal of Aerospace Power,2010,25(8):1825-1835. |
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| Authors: | QI Lei PAN Shang-neng LI Wei ZOU Zheng-ping LIU Huo-xing and ZHOU Yang |
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| Institution: | Department of Aircraft Power Engineering,BUAA |
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| Abstract: | Vaneless counter-rotating turbine is taken as an important technique to effectively improve the gas turbine design. It is significant to investigate the complex flow field in counter-rotating turbine. A numerical study of unsteady flow in a vaneless counter-rotating turbine was present in this paper. The steady and unsteady results were contrastively analyzed. It was found that the unsteady effect can decrease the specific work ratio appreciably, and increase the loss by about 0.44 efficiency points with. However the mass flow was unchanged. The paper shows that the unsteady interactions from the wake, shockwave, potential field and the tip leakage flow have made great contributions to the unsteady effect. |
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| Keywords: | counter-rotating turbine unsteady flow wake shock wave potential interaction tip leakage flow |
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