Calculation and analysis on velocity slip of pump as turbine

doi:10.13245/j.hust.170912

	Calculation and analysis on velocity slip of pump as turbine
	Wang, Xiaohui1 ; Yang, Junhu2 ; Xia, Zhengting 1; Guo, Yanlei2
	2017-09-23
发表期刊	Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition)
ISSN	16714512
卷号	45 期号:9 页码:64-68
摘要	Focus on the pump as turbine (PAT), the slip phenomenon was analyzed based on RNG (renormalization group) k-Ε simulation, the distribution of slip factor was revealed for pump mode and turbine mode, and a new method of head relationship between pump and turbine mode was proposed considering slip factor. Results show that slip factor is increasing with the increase of discharge in pump mode but inversely in turbine operation. Relevant hydraulic loss in impeller passage is induced by slip phenomenon. Slip strengthened in part-load region, as a consequence, hydraulic efficiency is low, on the contrary, it weakened in over-load region, therefore, hydraulic efficiency of PAT is high relatively. Then the head relationship between pump mode and turbine mode for 6 selected PATs were calculated based on the proposed new method, and results were compared with those without considering the slip coefficient, which shows that the average error is reduced by 5%~20% using proposed new method. © 2017, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
关键词	Centrifugal pumps Efficiency Pumps Statistical mechanics Turbines Head relationship Hydraulic efficiency Pump as turbine (PAT) Renormalization group Slip coefficients Slip factor Turbine operation Velocity slips
DOI	10.13245/j.hust.170912
收录类别	EI
语种	中文
出版者	Huazhong University of Science and Technology
EI入藏号	20174404325615
EI主题词	Hydraulic motors
EI分类号	618.2 Pumps - 632.2 Hydraulic Equipment and Machinery - 913.1 Production Engineering - 922.2 Mathematical Statistics
来源库	Compendex
分类代码	618.2 Pumps - 632.2 Hydraulic Equipment and Machinery - 913.1 Production Engineering - 922.2 Mathematical Statistics
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114543
专题	能源与动力工程学院新能源学院
作者单位	1.School of Energy and Power Engineering, China; 2.Key Laboratory of Fluid Machinery and System, Lanzhou University of Technology, Lanzhou; Gansu Province; 730050, China
第一作者单位	新能源学院
第一作者的第一单位	新能源学院
推荐引用方式 GB/T 7714	Wang, Xiaohui,Yang, Junhu,Xia, Zhengting,et al. Calculation and analysis on velocity slip of pump as turbine[J]. Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition),2017,45(9):64-68.
APA	Wang, Xiaohui,Yang, Junhu,Xia, Zhengting,&Guo, Yanlei.(2017).Calculation and analysis on velocity slip of pump as turbine.Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition),45(9),64-68.
MLA	Wang, Xiaohui,et al."Calculation and analysis on velocity slip of pump as turbine".Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) 45.9(2017):64-68.