The unsteady flow inside a large centrifugal pump with stay vanes was analyzed in this study. The static performance and pressure fluctuations in the pump were numerically predicted and were compared with experimental data. Considering the relative positions of the impeller to the volute tongue and stay vanes, the static performance which was obtained using a full unsteady calculation was compared with traditional steady calculation results. A comparison of the results with the experimental data showed that the operation condition farther from the design condition resulted in larger differences between the steady simulation and experimental results, with errors beyond reasonable limits, while the performance curves obtained by the unsteady calculations were closer to the experimental data. A comparison of the pressure fluctuations at four monitoring points with the experimental data showed that the amplitudes at HVS1 and HVS2 are much larger than at HD1 and HD2. The main frequency for these four monitoring points, which agreed well with the experimental data, was the blade passing frequency. The relative obvious errors in pressure fluctuations for HD1and HD2 were due to the inlet flow rate variation of the simulation. Thus, unsteady numerical simulations can be used to predict the pressure fluctuations when designing a pump.
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July 2014
Research-Article
Numerical and Experimental Study of Unsteady Flow in a Large Centrifugal Pump With Stay Vanes
Zhongxin Gao,
e-mail: gaozhx@iwhr.com
Zhongxin Gao
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: gaozhx@iwhr.com
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Wenruo Zhu,
e-mail: kenanzwr@126.com
Wenruo Zhu
1
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: kenanzwr@126.com
1Corresponding author.
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Li Lu,
e-mail: luli@iwhr.com
Li Lu
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: luli@iwhr.com
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Jie Deng,
e-mail: dengjie@iwhr.com
Jie Deng
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: dengjie@iwhr.com
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Jianguang Zhang,
e-mail: zhangjg@iwhr.com
Jianguang Zhang
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: zhangjg@iwhr.com
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Fujun Wuang
Fujun Wuang
College of Water Resources and Civil Engineering,
e-mail: wangfj@cau.edu.cn
China Agricultural University
,Beijing
, China
100083
e-mail: wangfj@cau.edu.cn
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Zhongxin Gao
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: gaozhx@iwhr.com
Wenruo Zhu
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: kenanzwr@126.com
Li Lu
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: luli@iwhr.com
Jie Deng
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: dengjie@iwhr.com
Jianguang Zhang
China Institute of Water Resources and Hydropower Research
,Beijing
, China
100038
e-mail: zhangjg@iwhr.com
Fujun Wuang
College of Water Resources and Civil Engineering,
e-mail: wangfj@cau.edu.cn
China Agricultural University
,Beijing
, China
100083
e-mail: wangfj@cau.edu.cn
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received February 26, 2013; final manuscript received January 4, 2014; published online May 7, 2014. Assoc. Editor: Edward M. Bennett.
J. Fluids Eng. Jul 2014, 136(7): 071101 (10 pages)
Published Online: May 7, 2014
Article history
Received:
February 26, 2013
Revision Received:
January 4, 2014
Citation
Gao, Z., Zhu, W., Lu, L., Deng, J., Zhang, J., and Wuang, F. (May 7, 2014). "Numerical and Experimental Study of Unsteady Flow in a Large Centrifugal Pump With Stay Vanes." ASME. J. Fluids Eng. July 2014; 136(7): 071101. https://doi.org/10.1115/1.4026477
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