The Action Mechanism of Rotor-Stator Interaction on Hydraulic and Hydroacoustic Characteristics of a Jet Centrifugal Pump Impeller and Performance Improvement

doi:10.3390/w12020465

	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	被引频次：2[WOS] [WOS记录] [WOS相关记录]
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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