| 无叶扩压段型线对离心压气机性能的影响 |
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| 引用本文： | 汤华,杜建一,初雷哲,赵晓路,徐建中.无叶扩压段型线对离心压气机性能的影响[J].工程热物理学报,2006,27(6):959-961. |
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| 作者姓名： | 汤华 杜建一 初雷哲 赵晓路 徐建中 |
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| 作者单位： | 1. 中国科学院工程热物理研究所,北京,100080;中国科学院研究生院,北京,100080
2. 中国科学院工程热物理研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金;国家高技术研究发展计划(863计划) |
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| 摘 要： | 本文设计了无叶扩压段轮盖侧型线,并采用CFD软件数值模拟了采用两种不同轮盖侧型线结构的离心压气机级．分析了无叶扩压段内部的流动结构和熵的分布．计算结果说明无叶扩压段轮盖侧型线对上游叶轮、下游叶片扩压器以及离心压气机级性能有较大影响．
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| 关 键 词： | 无叶扩压段 离心压气机 数值模拟 |
| 文章编号： | 0253-231X(2006)06-0959-03 |
| 修稿时间： | 2005年12月5日 |
INFLUENCE OF THE VANELESS DIFFUSER SHAPE ON CENTRIFUGAL COMPRESSOR PERFORMANCE |
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| TANG Hua,DU Jian-Yi,CHU Lei-Zhe,ZHAO Xiao-Lu,XU Jian-Zhong.INFLUENCE OF THE VANELESS DIFFUSER SHAPE ON CENTRIFUGAL COMPRESSOR PERFORMANCE[J].Journal of Engineering Thermophysics,2006,27(6):959-961. |
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| Authors: | TANG Hua DU Jian-Yi CHU Lei-Zhe ZHAO Xiao-Lu XU Jian-Zhong |
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| Abstract: | This paper reports a numerical study on two centrifugal compressors with the vaneless diffuser of different contours. The influences on the performance of impeller, vane diffuser and compressor are analyzed. The mass flow close to choke conditions, the effect on impeller is primary, but close to surge conditions, the effect on vane diffuser is main. The contour is combined with different slope curves, and the circumfluence in vaneless diffuser comes forth. The vaneless diffuser with continuous slope's profile is useful for the matching between impeller and vane diffuser and the improvement of compressor performance. |
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| Keywords: | vaneless diffuser centrifugal compressor numerical simulation |
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