Study on the Optimization of Aeration Scheme for a Spillway
Cavitation damage is easy to occur in discharge structures with high head and large flow.Based on the spillway project of a hydropower station in Northwest China,this paper studies the aeration and cavitation mitigation of spillway through the single hydraulic model test.The experimental results sho...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Pearl River
2021-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.06.015 |
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| author | SHI Die LI Guodong HE Cuiling LI Pengfeng |
| author_facet | SHI Die LI Guodong HE Cuiling LI Pengfeng |
| author_sort | SHI Die |
| collection | DOAJ |
| description | Cavitation damage is easy to occur in discharge structures with high head and large flow.Based on the spillway project of a hydropower station in Northwest China,this paper studies the aeration and cavitation mitigation of spillway through the single hydraulic model test.The experimental results show that:The velocity of spillway chute is larger and the flow cavitation number is less than 0.3 under different conditions of flood frequency,so it is necessary to set up aeration and cavitation mitigation facility.Through the analysis of the cavitation mitigation effect of three different aerators,it can be seen that the aerator with flip bucket can mitigate cavitation,but there are different degrees of splash in the downstream.The aerator with convex bucket can form a stable cavity,and there is no splash in the downstream.The aerator with chute can form a stable cavity and flow pattern in the chute,and it is easy to construct,so it is the optimal aerator.In the optimal aerator,the aeration concentration from aerator to the front of the bucket lip is higher,which is 0.9%~63.1%,the aeration effect is good,and the purpose of aeration and cavitation mitigation is achieved.The research results can provide theoretical guidance and technical support for the follow-up energy dissipation and erosion control research of this project and the aeration and cavitation mitigation research of similar projects. |
| format | Article |
| id | doaj-art-78bbe48fe4c04cba91d7224c6f1c3fa4 |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-78bbe48fe4c04cba91d7224c6f1c3fa42025-01-15T02:30:05ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352021-01-014247649391Study on the Optimization of Aeration Scheme for a SpillwaySHI DieLI GuodongHE CuilingLI PengfengCavitation damage is easy to occur in discharge structures with high head and large flow.Based on the spillway project of a hydropower station in Northwest China,this paper studies the aeration and cavitation mitigation of spillway through the single hydraulic model test.The experimental results show that:The velocity of spillway chute is larger and the flow cavitation number is less than 0.3 under different conditions of flood frequency,so it is necessary to set up aeration and cavitation mitigation facility.Through the analysis of the cavitation mitigation effect of three different aerators,it can be seen that the aerator with flip bucket can mitigate cavitation,but there are different degrees of splash in the downstream.The aerator with convex bucket can form a stable cavity,and there is no splash in the downstream.The aerator with chute can form a stable cavity and flow pattern in the chute,and it is easy to construct,so it is the optimal aerator.In the optimal aerator,the aeration concentration from aerator to the front of the bucket lip is higher,which is 0.9%~63.1%,the aeration effect is good,and the purpose of aeration and cavitation mitigation is achieved.The research results can provide theoretical guidance and technical support for the follow-up energy dissipation and erosion control research of this project and the aeration and cavitation mitigation research of similar projects.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.06.015cavitation damagesingle hydraulic model testaeration and cavitation mitigationaerator with chuteaeration concentration |
| spellingShingle | SHI Die LI Guodong HE Cuiling LI Pengfeng Study on the Optimization of Aeration Scheme for a Spillway Renmin Zhujiang cavitation damage single hydraulic model test aeration and cavitation mitigation aerator with chute aeration concentration |
| title | Study on the Optimization of Aeration Scheme for a Spillway |
| title_full | Study on the Optimization of Aeration Scheme for a Spillway |
| title_fullStr | Study on the Optimization of Aeration Scheme for a Spillway |
| title_full_unstemmed | Study on the Optimization of Aeration Scheme for a Spillway |
| title_short | Study on the Optimization of Aeration Scheme for a Spillway |
| title_sort | study on the optimization of aeration scheme for a spillway |
| topic | cavitation damage single hydraulic model test aeration and cavitation mitigation aerator with chute aeration concentration |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.06.015 |
| work_keys_str_mv | AT shidie studyontheoptimizationofaerationschemeforaspillway AT liguodong studyontheoptimizationofaerationschemeforaspillway AT hecuiling studyontheoptimizationofaerationschemeforaspillway AT lipengfeng studyontheoptimizationofaerationschemeforaspillway |