Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank
Based on the theory of hydraulic transients and the method of characteristics (MOC), a mathematic model of the differential surge tank with pressure-reduction orifices (PROs) and overflow weirs for transient calculation is proposed. The numerical model of hydraulic transients is established using th...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/241868 |
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| _version_ | 1850177991555940352 |
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| author | Xiaodong Yu Jian Zhang Ling Zhou |
| author_facet | Xiaodong Yu Jian Zhang Ling Zhou |
| author_sort | Xiaodong Yu |
| collection | DOAJ |
| description | Based on the theory of hydraulic transients and the method of characteristics (MOC), a mathematic model of the differential surge tank with pressure-reduction orifices (PROs) and overflow weirs for transient calculation is proposed. The numerical model of hydraulic transients is established using the data of a practical hydropower station; and the probable transients are simulated. The results show that successive load rejection is critical for calculating the maximum pressure in spiral case and the maximum rotating speed of runner when the bifurcated pipe is converging under the surge tank in a diversion-type hydropower station; the pressure difference between two sides of breast wall is large during transient conditions, and it would be more serious when simultaneous load rejections happen after load acceptance; the reasonable arrangement of PROs on breast wall can effectively decrease the pressure difference. |
| format | Article |
| id | doaj-art-bac74583b6ce45bc8d7bd0f77da3a524 |
| institution | OA Journals |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-bac74583b6ce45bc8d7bd0f77da3a5242025-08-20T02:18:50ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/241868241868Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge TankXiaodong Yu0Jian Zhang1Ling Zhou2College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaBased on the theory of hydraulic transients and the method of characteristics (MOC), a mathematic model of the differential surge tank with pressure-reduction orifices (PROs) and overflow weirs for transient calculation is proposed. The numerical model of hydraulic transients is established using the data of a practical hydropower station; and the probable transients are simulated. The results show that successive load rejection is critical for calculating the maximum pressure in spiral case and the maximum rotating speed of runner when the bifurcated pipe is converging under the surge tank in a diversion-type hydropower station; the pressure difference between two sides of breast wall is large during transient conditions, and it would be more serious when simultaneous load rejections happen after load acceptance; the reasonable arrangement of PROs on breast wall can effectively decrease the pressure difference.http://dx.doi.org/10.1155/2014/241868 |
| spellingShingle | Xiaodong Yu Jian Zhang Ling Zhou Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank The Scientific World Journal |
| title | Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank |
| title_full | Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank |
| title_fullStr | Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank |
| title_full_unstemmed | Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank |
| title_short | Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank |
| title_sort | hydraulic transients in the long diversion type hydropower station with a complex differential surge tank |
| url | http://dx.doi.org/10.1155/2014/241868 |
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