| 带前置导叶离心压缩机非定常流动的数值模拟 |
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| 引用本文： | 王玉川,李振华.带前置导叶离心压缩机非定常流动的数值模拟[J].华北水利水电学院学报,2012,33(3):47-50. |
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| 作者姓名： | 王玉川 李振华 |
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| 作者单位： | 1. 清华大学水沙科学与水利水电国家重点实验室,北京,100084
2. 沈阳鼓风机集团有限公司,辽宁沈阳,110869 |
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| 基金项目： | 中国博士后科学基金面上资助项目，水沙科学与水利水电工程国家重点实验室开放研究基金资助项目 |
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| 摘 要： | 利用CFX对无导叶和前置导叶大预旋角度下离心压缩机内部流动进行了数值模拟,分析了叶轮表面的压力分布规律.前置导叶正预旋40°的非定常流动计算结果显示,导叶及叶轮表面均发生了流动分离,导致流场内产生了较大的压力波动,波动主频率为2 422 Hz,叶轮流道内旋涡的周期性发展是导致叶片表面压力波动的主要原因.
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| 关 键 词： | 前置导叶 离心压缩机 非定常流动 数值模拟 |
Numerical Simulation on Unsteady Flow in Centrifugal Compressor with Inlet Guide Vanes |
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| WANG Yu-chuan
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LI Zhen-hua.Numerical Simulation on Unsteady Flow in Centrifugal Compressor with Inlet Guide Vanes[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2012,33(3):47-50. |
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| Authors: | WANG Yu-chuan LI Zhen-hua |
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| Affiliation: | 1.State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China; 2.Shenyang Blower Works Group Corporation,Shenyang 110869,China) |
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| Abstract: | The inner flow of centrifugal compressor without Inlet Guide Vanes(IGV) and with IGV in large prewhirl angels were numerical simulated by CFX.It is found that the blade loading from hub to shroud increases gradually.In the IGV prewhirl +40° angel condition,the flow separations both occur on IGV and impeller surface,which cause large pressure fluctuation with dominant frequency of 2 242 Hz in flow fields.The leading cause of pressure fluctuation is found that the vortexes develop periodically in blade passages. |
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| Keywords: | Inlet Guide Vanes(IGV) centrifugal compressor unsteady flow numerical simulation |
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