Experimental and Numerical Study of Unsteady Flow in a Diffuser Pump at Off-Design Conditions
Experimental and Numerical Study of Unsteady Flow in a Diffuser Pump at Off-Design Conditions
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DOI：
10.1115/1.1603305
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发表时间：
2003-09
影响因子：
2
通讯作者：
Hong Wang;H. Tsukamoto
中科院分区：
文献类型：
--
作者：
Hong Wang;H. Tsukamoto
对扩压器泵非设计工况下的非定常现象进行了实验和数值研究。对叶轮下游的非定常压力进行了测量，并利用系综平均技术以及统计和混沌时间序列分析对压力波动进行了分析。通过统计和混沌时间序列分析，将非定常流分为五个区域。采用二维涡方法研究了不同工况下扩压器泵内叶轮与导叶相互作用引起的非定常流动结构
An experimental and numerical study was developed for the unsteady phenomena at off-design conditions of a diffuser pump. Unsteady pressure measurements were made downstream of the impeller, and the pressure fluctuations were analyzed using the ensemble averaging technique as well as the statistical and chaotic time series analysis. The unsteady flow was classified into five ranges as a result of the statistical and chaotic time series analysis. And a two-dimensional vortex method was employed to investigate the unsteady flow structure due to the interaction between impeller and diffuser vanes in a diffuser pump at various off-design conditions