Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening
In order to explore the influence of the opening of the movable guide vane on the flow and pressure pulsation in the draft tube of the Francis turbine,the steady and unsteady numerical simulations were carried out by establishing a three-dimensional full-flow channel model of a Francis turbine in a...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Pearl River
2023-01-01
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| Series: | Renmin Zhujiang |
| Subjects: | |
| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.05.016 |
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| author | REN Haibo YU Bo WANG Kui WANG Luobin |
| author_facet | REN Haibo YU Bo WANG Kui WANG Luobin |
| author_sort | REN Haibo |
| collection | DOAJ |
| description | In order to explore the influence of the opening of the movable guide vane on the flow and pressure pulsation in the draft tube of the Francis turbine,the steady and unsteady numerical simulations were carried out by establishing a three-dimensional full-flow channel model of a Francis turbine in a power station in southwest China,and the flow characteristics and pressure pulsation of the draft tube of the Francis turbine under different guide vane opening of the rated head were studied.The results show that with the increase in guide vane opening,obvious alternating vortices appear in the straight cone section of the draft tube,which cause low-frequency pressure pulsation in the draft tube.The uniformity of pressure and velocity distribution in the draft tube gradually deteriorates,and the main frequency amplitude of pressure pulsation at the elbow section of the draft tube increases first and then decreases.The vortex zone of the draft tube causes the pressure pulsation of low frequency and high amplitude in the draft tube. |
| format | Article |
| id | doaj-art-c2c1d0a2bd594969b4fd4fd9d906a1ad |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2023-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-c2c1d0a2bd594969b4fd4fd9d906a1ad2025-01-15T02:21:38ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352023-01-014447636872Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane OpeningREN HaiboYU BoWANG KuiWANG LuobinIn order to explore the influence of the opening of the movable guide vane on the flow and pressure pulsation in the draft tube of the Francis turbine,the steady and unsteady numerical simulations were carried out by establishing a three-dimensional full-flow channel model of a Francis turbine in a power station in southwest China,and the flow characteristics and pressure pulsation of the draft tube of the Francis turbine under different guide vane opening of the rated head were studied.The results show that with the increase in guide vane opening,obvious alternating vortices appear in the straight cone section of the draft tube,which cause low-frequency pressure pulsation in the draft tube.The uniformity of pressure and velocity distribution in the draft tube gradually deteriorates,and the main frequency amplitude of pressure pulsation at the elbow section of the draft tube increases first and then decreases.The vortex zone of the draft tube causes the pressure pulsation of low frequency and high amplitude in the draft tube.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.05.016guide vane openingFrancis turbinedraft tubehydraulic characteristicpressure pulsation |
| spellingShingle | REN Haibo YU Bo WANG Kui WANG Luobin Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening Renmin Zhujiang guide vane opening Francis turbine draft tube hydraulic characteristic pressure pulsation |
| title | Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening |
| title_full | Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening |
| title_fullStr | Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening |
| title_full_unstemmed | Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening |
| title_short | Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening |
| title_sort | analysis of flow and pressure pulsation in draft tube of francis turbine under different guide vane opening |
| topic | guide vane opening Francis turbine draft tube hydraulic characteristic pressure pulsation |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.05.016 |
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