Erosion estimation of guide vane end clearance in hydraulic turbines with sediment water flow | |
Han, Wei2,3; Kang, Jingbo2,3; Wang, Jie2,3; Peng, Guoyi4; Li, Lianyuan1; Su, Min5 | |
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). |
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