| 考虑泄漏间隙有压流体作用的指尖密封瞬态性能分析 |
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| 引用本文： | 王莉娜,陈国定,苏华,路菲.考虑泄漏间隙有压流体作用的指尖密封瞬态性能分析[J].航空动力学报,2015,30(8):2004-2010. |
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| 作者姓名： | 王莉娜 陈国定 苏华 路菲 |
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| 作者单位： | 西北工业大学 机电学院, 西安 710072,西北工业大学 机电学院, 西安 710072,西北工业大学 机电学院, 西安 710072,西北工业大学 机电学院, 西安 710072 |
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| 基金项目： | 陕西省自然科学基金(2014JM7266);国家自然科学基金(51305343) |
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| 摘 要： | 针对已有指尖密封性能分析工作中未考虑泄漏间隙有压流体作用使得指尖密封的理论分析与工程实际有较明显差距的问题,建立了考虑泄漏间隙中有压流体作用的指尖密封性能分析模型,对是否考虑泄漏间隙中有压流体作用的指尖密封性能差异进行了比较分析.研究结果表明:指尖密封性能分析工作需要考虑泄漏间隙有压流体的作用.考虑泄漏间隙有压流体作用指尖密封的泄漏率较不考虑有压流体作用的泄漏率最大增加了234.7%,且有压流体作用使指尖密封泄漏率随转速增加的趋势更加显著.
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| 关 键 词： | 指尖密封 流体作用 瞬态分析 泄漏间隙 压力分布 泄漏率 |
| 收稿时间： | 3/3/2014 12:00:00 AM |
Transient performance analysis of finger seal considering compressed fluid in the leakage gap effect |
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| WANG Li-n,CHEN Guo-ding,SU Hua and LU Fei.Transient performance analysis of finger seal considering compressed fluid in the leakage gap effect[J].Journal of Aerospace Power,2015,30(8):2004-2010. |
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| Authors: | WANG Li-n CHEN Guo-ding SU Hua and LU Fei |
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| Institution: | School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China,School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China,School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China and School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | In order to solve the problem that the influence of compressed fluid in the leakage gap was neglected in previous work and the results compared with the practical test had poor consistency, the transient performance analysis model of finger seal (FS) considering compressed fluid in the leakage gap effect was proposed; and then the calculated results of FS performance were compared with those without having considered the effect of compressed fluid. The results indicate that it's necessary to consider the compressed fluid effect about the performance analysis of FS. The FS leakage rate with consideration of compressed fluid has a maximal increase of 234.7% compared with that neglecting the effect of compressed fluid. The compressed fluid makes the trend of FS leakage rate rise remarkably with the increasing rotor speed. In addition, the FS average contact pressure is decreased by compressed fluid, so the wear extent is lower. |
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| Keywords: | finger seal fluid transient analysis leakage gap pressure distribution leakage rate |
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