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The Action Mechanism of Rotor-Stator Interaction on Hydraulic and Hydroacoustic Characteristics of a Jet Centrifugal Pump Impeller and Performance Improvement | |
Guo, Rong1,2; Li, Rennian1,2; Zhang, Renhui1,2; Han, Wei1,2 | |
2020-02 | |
发表期刊 | WATER |
卷号 | 12期号:2 |
摘要 | The aim of this study was to investigate the action mechanism of the rotor-stator interaction (RSI) on the transient flow field and hydrodynamic noise field inside the impeller of jet centrifugal pumps (JCPs) and optimize effects of the guide vane on the hydraulic and hydroacoustic characteristics of the impeller. The numerical method of CFD (computational fluid dynamics) coupled with CFA (computational fluid acoustics) was used to analyze the correlation between the guide vane and the flow/sound performances of the impeller. The orthogonal test method, with the hydroacoustic performance of the impeller taken as the objective, was used to optimize the structural parameters of the guide vane for the stability of the hydraulic performance of the JCP. The results show that the RSI leads to a significant increase in the hydroacoustic level of the impeller, but it is indispensable for improving the hydraulic performance of the pump. The RSI effect on the fluctuation intensity of the transient flow field inside the impeller is much more sensitive than the time-average, and the fluctuation intensity of the flow field is positively correlated with the vortex intensity inside the impeller. When the impeller geometry is constant, the evolution processes of the flow field inside the impeller are mainly related to the blade number of the guide vane; when the number of guide vanes is given, the RSI effect on the hydroacoustic characteristic of the impeller is characterized by a positive correlation between the total sound pressure level (SPL) and the fluctuation intensity of the flow field. The frequency spectrum characteristics of the hydroacoustic SPL of the impeller are not consistent with the pressure fluctuation characteristics inside the impeller. The pressure fluctuation characteristics are related not only to the blade number and speed of the impeller but also to its wake characteristics determined by the guide vane. The optimization scheme for the stable hydraulic performance of the JCP significantly reduced the total SPL of the impeller compared with the original scheme, which verifies the feasibility of using the weight matrix optimization method to obtain the global optimization scheme. |
关键词 | jet centrifugal pump rotor-stator interaction hydraulic performance hydroacoustic characteristics sound pressure level optimization |
DOI | 10.3390/w12020465 |
收录类别 | SCI |
语种 | 英语 |
资助项目 | Natural Science Foundation of China[51579125] ; National Key Research and Development Program of China[2016YFB0200901] |
WOS研究方向 | Water Resources |
WOS类目 | Water Resources |
WOS记录号 | WOS:000519846500156 |
出版者 | MDPI |
EI入藏号 | 20201108304890 |
EI主题词 | Impellers |
EI分类号 | 601.2 Machine Components - 618.2 Pumps - 631.1 Fluid Flow, General - 705.1 Electric Machinery, General - 723.5 Computer Applications - 751.1 Acoustic Waves - 921.5 Optimization Techniques - 921.6 Numerical Methods - 941.2 Acoustic Variables Measurements |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/64152 |
专题 | 能源与动力工程学院 |
通讯作者 | Guo, Rong; Li, Rennian |
作者单位 | 1.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China 2.Key Lab Fluid Machinery & Syst, Lanzhou 730050, Gansu Province, Peoples R China |
第一作者单位 | 能源与动力工程学院 |
通讯作者单位 | 能源与动力工程学院 |
第一作者的第一单位 | 能源与动力工程学院 |
推荐引用方式 GB/T 7714 | Guo, Rong,Li, Rennian,Zhang, Renhui,et al. The Action Mechanism of Rotor-Stator Interaction on Hydraulic and Hydroacoustic Characteristics of a Jet Centrifugal Pump Impeller and Performance Improvement[J]. WATER,2020,12(2). |
APA | Guo, Rong,Li, Rennian,Zhang, Renhui,&Han, Wei.(2020).The Action Mechanism of Rotor-Stator Interaction on Hydraulic and Hydroacoustic Characteristics of a Jet Centrifugal Pump Impeller and Performance Improvement.WATER,12(2). |
MLA | Guo, Rong,et al."The Action Mechanism of Rotor-Stator Interaction on Hydraulic and Hydroacoustic Characteristics of a Jet Centrifugal Pump Impeller and Performance Improvement".WATER 12.2(2020). |
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