Effects of guide vane thickness on pressure pulsation of mixed-flow pump in pumped-storage power station
Effects of guide vane thickness on pressure pulsation of mixed-flow pump in pumped-storage power station
复制标题
抽水蓄能电站导叶厚度对混流泵压力脉动的影响
DOI：
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发表时间：
2013
影响因子：
1
通讯作者：
Zou, Pingping
中科院分区：
文献类型：
--
作者：
Li, Wei;Shi, Weidong;Xu, Y;ong;Zhou, Ling;Zou, Pingping
压力脉动是影响抽水蓄能电站大型混流泵机组运行不稳定和振动的关键因素之一。基于标准k-e湍流模型、SIMPLE算法和滑移网格技术，对不同导叶厚度混流泵的非定常流场进行了数值模拟。通过设置测压点，讨论了叶轮进出口和导叶中部的压力脉动特性，分析了导叶厚度对压力脉动的影响。结果表明，数值模拟网格类型、湍流模型能较准确地预测混流泵的内部流动特性。压力脉动的主频与叶轮叶片通过频率相近。导叶厚度对叶轮进口压力脉动影响较小，对导叶中部压力脉动影响较大。与减薄导叶相比，加厚导叶的压力脉动幅度提高了7.8%。因此，适当减小导叶厚度有利于导叶内部流动的稳定。
The pressure pulsation is one of the key factors affecting instability operation and vibration of large mixed-flow pump units in pumped-storage power station. The unsteady flow field in a mixed-flow pump with different guide vane thicknesses was numerically simulated based on the standard k-e turbulence model, the SIMPLE algorithm and the sliding mesh technique. By setting pressure measurement points, the pressure pulsation characteristics in the impeller inlet, outlet and the middle of guide vane were discussed and the influence of the guide vanes’ thickness on pressure pulsation was analyzed. The results show that the type of numerical simulation grid, turbulence model can accurately predict the internal flow characteristics of the mixed-flow pump. The dominant frequency of pressure pulsation was approximate to the impeller blade passing frequency. The thickness of the guide vane have less influence on pressure pulsation in the inlet of impeller, and have more influence on pressure pulsation in the middle of guide vane. Compared with the thinning guide vanes, the pressure pulsation amplitude of the thicken guide vane increase 7.8 %. Therefore, appropriately reducing the thickness of guide vane is beneficial to the stability of the internal flow of guide vane.
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DOI：
10.1115/fedsm2002-31182
发表时间：
2002
期刊：
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影响因子：
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作者：
J. González;C. Santolaria;E. Blanco;Joaquín Fernandez
通讯作者：
J. González;C. Santolaria;E. Blanco;Joaquín Fernandez
影响因子：
1.7
作者：
V. Esch;L. Cheng
通讯作者：
V. Esch;L. Cheng
DOI：
10.1115/fedsm2009-78277
发表时间：
2009
期刊：
--
影响因子：
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作者：
Masahiro Miyabe;A. Furukawa;H. Maeda;Isamu Umeki
通讯作者：
Masahiro Miyabe;A. Furukawa;H. Maeda;Isamu Umeki
DOI：
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发表时间：
2012-04
期刊：
--
影响因子：
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作者：
S. Toksoz;G. Coşkun;C. Çelik;H. Soyhan;E. Buyukkaya;F. Halici
通讯作者：
S. Toksoz;G. Coşkun;C. Çelik;H. Soyhan;E. Buyukkaya;F. Halici
DOI：
10.3969/j.issn.1002-6819.2011.4.025
发表时间：
2011-04
期刊：
Transactions of the Chinese Society of Agricultural Engineering
影响因子：
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作者：
S. Weidong;Zou Pingping;Zhang Desheng;Zhou Ling
通讯作者：
S. Weidong;Zou Pingping;Zhang Desheng;Zhou Ling