Erosion estimation of guide vane end clearance in hydraulic turbines with sediment water flow

doi:10.1142/S0217984918501002

	Erosion estimation of guide vane end clearance in hydraulic turbines with sediment water flow
	Han, Wei 2,3; Kang, Jingbo 2,3; Wang, Jie 2,3; Peng, Guoyi 4; Li, Lianyuan 1; Su, Min 5
刊名	MODERN PHYSICS LETTERS B
	2018-04-10
卷号	32 期号:10
关键词	Erosion estimation end clearance guide vane solid-liquid two phase flow numerical simulation
ISSN号	0217-9849
DOI	10.1142/S0217984918501002
英文摘要	The end surface of guide vane or head cover is one of the most serious parts of sediment erosion for high-head hydraulic turbines. In order to investigate the relationship between erosion depth of wall surface and the characteristic parameter of erosion, an estimative method including a simplified flow model and a modificatory erosion calculative function is proposed in this paper. The flow between the end surfaces of guide vane and head cover is simplified as a clearance flow around a circular cylinder with a backward facing step. Erosion characteristic parameter of c(s)w(s)(3) is calculated with the mixture model for multiphase flow and the renormalization group (RNG) k-epsilon turbulence model under the actual working conditions, based on which, erosion depths of guide vane and head cover end surfaces are estimated with a modification of erosion coefficient K. The estimation results agree well with the actual situation. It is shown that the estimative method is reasonable for erosion prediction of guide vane and can provide a significant reference to determine the optimal maintenance cycle for hydraulic turbine in the future.
资助项目	Fluid and Power Machinery Key Laboratory Opening Foundation of Ministry of Education of China[szjj2017-092]
WOS研究方向	Physics
语种	英语
出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
WOS记录号	WOS:000429861000005
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32699]
专题	能源与动力工程学院电气工程与信息工程学院
通讯作者	Han, Wei
作者单位	1.Univ Leicester, Leicester, Leics, England 2.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China 3.Key Lab Fluid Machinery & Syst, Lanzhou 730050, Gansu, Peoples R China 4.Nihon Univ, Tokyo, Japan 5.Lanzhou Univ Technol, Coll Elect & Informat Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Han, Wei,Kang, Jingbo,Wang, Jie,et al. Erosion estimation of guide vane end clearance in hydraulic turbines with sediment water flow[J]. MODERN PHYSICS LETTERS B,2018,32(10).
APA	Han, Wei,Kang, Jingbo,Wang, Jie,Peng, Guoyi,Li, Lianyuan,&Su, Min.(2018).Erosion estimation of guide vane end clearance in hydraulic turbines with sediment water flow.MODERN PHYSICS LETTERS B,32(10).
MLA	Han, Wei,et al."Erosion estimation of guide vane end clearance in hydraulic turbines with sediment water flow".MODERN PHYSICS LETTERS B 32.10(2018).