| 叶片前缘后掠对离心压气机性能的影响 |
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| 引用本文： | 杨策,胡良军,何永玲.叶片前缘后掠对离心压气机性能的影响[J].北京理工大学学报,2006,26(11):957-960. |
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| 作者姓名： | 杨策 胡良军 何永玲 |
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| 作者单位： | 北京理工大学,机械与车辆工程学院,北京,100081;北京理工大学,机械与车辆工程学院,北京,100081;北京理工大学,机械与车辆工程学院,北京,100081 |
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| 摘 要： | 设计了两个带楔形扩压器的离心压气机,一个为叶片前缘后掠,另一个为叶片前缘不掠式普通叶轮.分别对这两个离心压气机进行内部流场数值计算,比较了这两种压气机性能的差别 ,分析了前缘后掠对离心压气机的性能及内部二次流的影响.比较了19个扩压器叶片压气机与23个扩压器叶片压气机性能的差别.结果表明,叶片前缘后掠使压气机喘振裕度减小;在叶轮进口附近区域,两种叶轮二次流涡系有一定差别.
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| 关 键 词： | 离心压气机 前缘后掠 楔形扩压器 数值计算 |
| 文章编号： | 1001-0645(2006)11-0957-04 |
| 收稿时间： | 2006/5/25 0:00:00 |
| 修稿时间： | 2006年5月25日 |
Centrifugal Compressor Impellers with Back-Swept Leading Edge |
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| YANG Ce,HU Liang-jun and HE Yong-ling.Centrifugal Compressor Impellers with Back-Swept Leading Edge[J].Journal of Beijing Institute of Technology(Natural Science Edition),2006,26(11):957-960. |
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| Authors: | YANG Ce HU Liang-jun and HE Yong-ling |
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| Institution: | School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,China;School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,China;School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,China |
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| Abstract: | Two compressors with wedge-shaped diffusers were designed.One of them has back-swept impeller and the other with ordinary impeller.Numerical simulation was conducted on the two compressors to find out the difference between their performance.The effect of being back-swept in performance and secondary flow was analyzed.The difference in performance between the compressor with 19 diffuser blades and the other with 23 diffuser blades were studied.The results showed that back-sweptness reduced the flow range of the compressor.Near the impeller inlet,there existed differences between the secondary vortexes. |
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| Keywords: | centrifugal compressor back-sweptness wedge-shape diffuser numerical computation |
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