Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading Edge
Even in the mountain valley reservoir, the labyrinth has a large capacity for overflowunder low head conditions, but its flow capacity decreases significantly with the increase ofweir head. Based on the existing test research results, combined with the phenomenon that theflow pattern gradually trans...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Pearl River
2020-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.07.015 |
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| author | WANG Shangjin QIU Yong YANG Zewen JIAO Xuan ZHOU Xinyu |
| author_facet | WANG Shangjin QIU Yong YANG Zewen JIAO Xuan ZHOU Xinyu |
| author_sort | WANG Shangjin |
| collection | DOAJ |
| description | Even in the mountain valley reservoir, the labyrinth has a large capacity for overflowunder low head conditions, but its flow capacity decreases significantly with the increase ofweir head. Based on the existing test research results, combined with the phenomenon that theflow pattern gradually transfers from thin-walled weir flow to vacuum practical weir flow withthe increase of flow rate, this paper compares and analyzes the change of flow coefficient of W-type labyrinth weir, carries out the mathematical regression analysis on the test data by Originsoftware, gives the fitting formula of the length of the overflow leading edge of labyrinth weirdecreasing with the increase of the water head of the weir,and on this basis, obtains the fittingformulas of flow capacity of W-type and V-type labyrinth weirs based on the length change ofoverflow leading edge. The results show that the length of the overflow leading edge and the flowcapacity of the labyrinth weir change with the increase of the head. |
| format | Article |
| id | doaj-art-99732daf097e4702a43a62c321b6b25f |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-99732daf097e4702a43a62c321b6b25f2025-01-15T02:31:42ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352020-01-014147652378Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading EdgeWANG ShangjinQIU YongYANG ZewenJIAO XuanZHOU XinyuEven in the mountain valley reservoir, the labyrinth has a large capacity for overflowunder low head conditions, but its flow capacity decreases significantly with the increase ofweir head. Based on the existing test research results, combined with the phenomenon that theflow pattern gradually transfers from thin-walled weir flow to vacuum practical weir flow withthe increase of flow rate, this paper compares and analyzes the change of flow coefficient of W-type labyrinth weir, carries out the mathematical regression analysis on the test data by Originsoftware, gives the fitting formula of the length of the overflow leading edge of labyrinth weirdecreasing with the increase of the water head of the weir,and on this basis, obtains the fittingformulas of flow capacity of W-type and V-type labyrinth weirs based on the length change ofoverflow leading edge. The results show that the length of the overflow leading edge and the flowcapacity of the labyrinth weir change with the increase of the head.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.07.015length of overflow leading edgeflow capabilityformula fittinglabyrinth weir |
| spellingShingle | WANG Shangjin QIU Yong YANG Zewen JIAO Xuan ZHOU Xinyu Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading Edge Renmin Zhujiang length of overflow leading edge flow capability formula fitting labyrinth weir |
| title | Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading Edge |
| title_full | Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading Edge |
| title_fullStr | Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading Edge |
| title_full_unstemmed | Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading Edge |
| title_short | Fitting Analysis of Flow Capacity of Labyrinth Weir Basedon the Length Change of Overflow Leading Edge |
| title_sort | fitting analysis of flow capacity of labyrinth weir basedon the length change of overflow leading edge |
| topic | length of overflow leading edge flow capability formula fitting labyrinth weir |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.07.015 |
| work_keys_str_mv | AT wangshangjin fittinganalysisofflowcapacityoflabyrinthweirbasedonthelengthchangeofoverflowleadingedge AT qiuyong fittinganalysisofflowcapacityoflabyrinthweirbasedonthelengthchangeofoverflowleadingedge AT yangzewen fittinganalysisofflowcapacityoflabyrinthweirbasedonthelengthchangeofoverflowleadingedge AT jiaoxuan fittinganalysisofflowcapacityoflabyrinthweirbasedonthelengthchangeofoverflowleadingedge AT zhouxinyu fittinganalysisofflowcapacityoflabyrinthweirbasedonthelengthchangeofoverflowleadingedge |