Study on Inlet Flow Field Structure and End-Wall Effect of Axial Flow Pump Impeller under Design Condition

doi:10.3390/en15144969

	Study on Inlet Flow Field Structure and End-Wall Effect of Axial Flow Pump Impeller under Design Condition
	Guo, Yanlei 1,2; Yang, Congxin 1,2; Wang, Yan 3; Lv, Tianzhi 1,2; Zhao, Sen 1,2
刊名	Energies
	2022-07-02
卷号	15 期号:14
关键词	Axial flow Flow fields Flow velocity Impellers Inlet flow Numerical methods Pumps Structural design Turbulence models Axial flow pump Axial flow velocity Circumferential velocity Circumferential velocity component End-wall End-wall effect Flow angles Rotation effect Velocity components Wall effects
DOI	10.3390/en15144969
英文摘要	The existing experimental technology cannot accurately and quantitatively measure the flow field structure and the wall boundary layer displacement effect in the axial flow pump. Based on SST k-ω turbulence model, a three-dimensional unsteady numerical simulation of the whole flow field of an axial flow pump was presented at the designed operating point to overcome the weakness of traditional measurement methods in measuring the flow field of the axial flow pump. The flow field structure of the axial flow pump inlet was studied quantitatively and the result was compared with the theoretical design value. It was found that there is an obvious impeller rotation effect and end-wall effect in the flow field of the axial flow pump inlet. The distribution law of the impeller inlet flow field and the crowding coefficient caused by the wall boundary layer were obtained. The pump inlet measurement point in the experiment and calculation domain inlet in the simulation should be kept at a distance of more than 0.5 Ds away from the impeller inlet to eliminate the influence of the impeller rotation effect. Through contrastive analysis, it was found that there is an obvious difference between the calculated value and the design value of the flow field structure due to the end-wall effect. The crowding coefficient should be taken into account when designing an axial flow pump. This study has certain reference significance for further understanding the flow field structure at the inlet of the axial flow pump impeller and improving the design theory of the axial flow pump. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
WOS研究方向	Energy & Fuels
语种	英语
出版者	MDPI
WOS记录号	WOS:000833896200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159404]
专题	能源与动力工程学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Fluid Machinery and Systems, Lanzhou; 730050, China; 3.Nuclear Power Institute of China, Chengdu; 610213, China
推荐引用方式 GB/T 7714	Guo, Yanlei,Yang, Congxin,Wang, Yan,et al. Study on Inlet Flow Field Structure and End-Wall Effect of Axial Flow Pump Impeller under Design Condition[J]. Energies,2022,15(14).
APA	Guo, Yanlei,Yang, Congxin,Wang, Yan,Lv, Tianzhi,&Zhao, Sen.(2022).Study on Inlet Flow Field Structure and End-Wall Effect of Axial Flow Pump Impeller under Design Condition.Energies,15(14).
MLA	Guo, Yanlei,et al."Study on Inlet Flow Field Structure and End-Wall Effect of Axial Flow Pump Impeller under Design Condition".Energies 15.14(2022).