Analysis of fluid-induced force of centrifugal pump impeller with compound whirl
In order to research the fluid-induced force of centrifugal pump impeller with compound whirling, based on the N-S equations, the RNG k-ε turbulence model is applied to simulate the low specific speed centrifugal pump under eccentric assembly condition. The effects of different flow rates, impeller...
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doaj-3c0bcfc03cf94f71890ba628c33893172021-06-02T14:25:31ZengElsevierAlexandria Engineering Journal1110-01682020-12-0159642474255Analysis of fluid-induced force of centrifugal pump impeller with compound whirlWenjie Zhou0Yifan Wang1Chao Li2Weibin Zhang3Guangkuan Wu4School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China; Corresponding author.School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, ChinaKey Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu 610039, ChinaInstitute of Water Resources and Hydro-electric Engineering, Xi’an University of Technology, Xi’an 710048, China; Zhejiang Fuchunjiang Hydropower Equipment Co., Ltd., Hangzhou 311501, ChinaIn order to research the fluid-induced force of centrifugal pump impeller with compound whirling, based on the N-S equations, the RNG k-ε turbulence model is applied to simulate the low specific speed centrifugal pump under eccentric assembly condition. The effects of different flow rates, impeller eccentricities and whirl ratios on the fluid-induced force of impeller were investigated. Finally, the fitting models of fluid-induced force with compound whirl were obtained by least square method (LSM). The results imply that the calculated results considering the impeller eccentricity are closer to the experimental data than those without considering the eccentric whirl. In addition, the extremum value of fluid-induced force of impeller has a significant positive correlation with the impeller eccentricity. With the increase of flow rate, the fluid-induced force is non-monotonic. The whirl ratio can change the numbers of peak and valley of fluid-induced force, and the nonlinear fitting model of fluid-induced force using LSM presents high precision. This study can provide important references for the design and fluid-structure interaction (FSI) vibration of centrifugal pump.http://www.sciencedirect.com/science/article/pii/S1110016820303574Centrifugal pumpCompound whirlFluid-induced forceNonlinear fittingNumerical simulation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wenjie Zhou Yifan Wang Chao Li Weibin Zhang Guangkuan Wu |
spellingShingle |
Wenjie Zhou Yifan Wang Chao Li Weibin Zhang Guangkuan Wu Analysis of fluid-induced force of centrifugal pump impeller with compound whirl Alexandria Engineering Journal Centrifugal pump Compound whirl Fluid-induced force Nonlinear fitting Numerical simulation |
author_facet |
Wenjie Zhou Yifan Wang Chao Li Weibin Zhang Guangkuan Wu |
author_sort |
Wenjie Zhou |
title |
Analysis of fluid-induced force of centrifugal pump impeller with compound whirl |
title_short |
Analysis of fluid-induced force of centrifugal pump impeller with compound whirl |
title_full |
Analysis of fluid-induced force of centrifugal pump impeller with compound whirl |
title_fullStr |
Analysis of fluid-induced force of centrifugal pump impeller with compound whirl |
title_full_unstemmed |
Analysis of fluid-induced force of centrifugal pump impeller with compound whirl |
title_sort |
analysis of fluid-induced force of centrifugal pump impeller with compound whirl |
publisher |
Elsevier |
series |
Alexandria Engineering Journal |
issn |
1110-0168 |
publishDate |
2020-12-01 |
description |
In order to research the fluid-induced force of centrifugal pump impeller with compound whirling, based on the N-S equations, the RNG k-ε turbulence model is applied to simulate the low specific speed centrifugal pump under eccentric assembly condition. The effects of different flow rates, impeller eccentricities and whirl ratios on the fluid-induced force of impeller were investigated. Finally, the fitting models of fluid-induced force with compound whirl were obtained by least square method (LSM). The results imply that the calculated results considering the impeller eccentricity are closer to the experimental data than those without considering the eccentric whirl. In addition, the extremum value of fluid-induced force of impeller has a significant positive correlation with the impeller eccentricity. With the increase of flow rate, the fluid-induced force is non-monotonic. The whirl ratio can change the numbers of peak and valley of fluid-induced force, and the nonlinear fitting model of fluid-induced force using LSM presents high precision. This study can provide important references for the design and fluid-structure interaction (FSI) vibration of centrifugal pump. |
topic |
Centrifugal pump Compound whirl Fluid-induced force Nonlinear fitting Numerical simulation |
url |
http://www.sciencedirect.com/science/article/pii/S1110016820303574 |
work_keys_str_mv |
AT wenjiezhou analysisoffluidinducedforceofcentrifugalpumpimpellerwithcompoundwhirl AT yifanwang analysisoffluidinducedforceofcentrifugalpumpimpellerwithcompoundwhirl AT chaoli analysisoffluidinducedforceofcentrifugalpumpimpellerwithcompoundwhirl AT weibinzhang analysisoffluidinducedforceofcentrifugalpumpimpellerwithcompoundwhirl AT guangkuanwu analysisoffluidinducedforceofcentrifugalpumpimpellerwithcompoundwhirl |
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1721403594797744128 |