| 水泵水轮机泵工况小流量区压力脉动预测 |
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| 引用本文： | 尹俊连,刘锦涛,王乐勤,魏显著. 水泵水轮机泵工况小流量区压力脉动预测[J]. 工程热物理学报, 2011, 0(7) |
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| 作者姓名： | 尹俊连 刘锦涛 王乐勤 魏显著 |
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| 作者单位： | 浙江大学化工机械研究所;水力发电设备企业国家重点实验室; |
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| 基金项目： | 国家自然科学基金项目资助(No.50979095) |
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| 摘 要： | 为了研究水泵水轮机偏工况下的导叶内部的压力脉动特征,本文比较分析了非定常雷诺平均模拟方法URANS和脱体涡模拟方法DES两种方法预测压力脉动特征的可行性,结果表明,DES可以用来预测压力脉动特征,最后,重点对泵工况Q/QD=0.15工况点的压力脉动的时域和频域特征进行了分析,得到固定导叶和活动导叶内部的压力脉动主要是低频成分,为转轮通过频率的11.27%。此外,固定导叶内部的压力脉动没有受到转轮内部的影响,而活动导叶内部则含有转轮通过频率成分。
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| 关 键 词： | 水泵水轮机 压力脉动 DES |
Prediction of Pressure Fluctuations of Pump Turbine Under Off-Design Condition in Pump Mode |
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| YIN Jun-Lian LIU Jin-Tao WANG Le-Qin WEI Xian-Zhu. Prediction of Pressure Fluctuations of Pump Turbine Under Off-Design Condition in Pump Mode[J]. Journal of Engineering Thermophysics, 2011, 0(7) |
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| Authors: | YIN Jun-Lian LIU Jin-Tao WANG Le-Qin WEI Xian-Zhu |
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| Affiliation: | YIN Jun-Lian~1 LIU Jin-Tao~1 WANG Le-Qin~1 WEI Xian-Zhu~2 (1.Institute of chemical machinery,Zhejiang University,Hangzhou 310027,China,2.State Key Laboratory of Hydropower Equipment,Harbin 150001,China) |
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| Abstract: | In order to investigate the pressure fluctuation characteristics in the guide vanes and stay vanes of pump turbine under off-design conditions,unsteady renolds averaged Navier-Stokes simulation(URANS)detached eddy simulation(DES)were carried out.The results showed that the DES method can be used to capture the pressure fluctuation characteristics.And then,the pressure signals under the operating condition Q/Q_D=0.15 were analyzed in the time domain and frequency domain respectively.The results suggested tha... |
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| Keywords: | pump turbine pressure fluctuation DES |
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