Research on Multiobjective Optimization of Bulb Tubular Turbine Based on Orthogonal Test
The bulb tubular unit has advantages over other units in the low head, large discharge, and tidal energy. The development and utilization of low head and ultralow head hydraulic resources can increase the runner’s energy parameters, make up for the defects of large size and low speed of the unit, an...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5581455 |
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| _version_ | 1832552491710939136 |
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| author | Jie Sun Ye Zhou Xinfeng Ge Jianguo Cai Yang Han Hui Zhang Jinliang Wang Lei Zhang Dong Chen Hongchang Hua Li Li Yuan Zheng |
| author_facet | Jie Sun Ye Zhou Xinfeng Ge Jianguo Cai Yang Han Hui Zhang Jinliang Wang Lei Zhang Dong Chen Hongchang Hua Li Li Yuan Zheng |
| author_sort | Jie Sun |
| collection | DOAJ |
| description | The bulb tubular unit has advantages over other units in the low head, large discharge, and tidal energy. The development and utilization of low head and ultralow head hydraulic resources can increase the runner’s energy parameters, make up for the defects of large size and low speed of the unit, and reduce the construction investment. The bulb tubular turbine’s operation stability and structural strength are compared and analyzed by the orthogonal test method to improve the perfomance of bulb tubular turbine. The results show that the optimal design scheme can be obtained when the number of guide vane is 16, the distance between the guide vane and the blade is 1995 mm, the hub ratio is 0.31, the relative twist angle of the blade is 27°, and the cascade density is 0.72. After optimization, the bulb tubular turbine’s efficiency and output are increased by 5.72% and 2.86% at a low flow rate, respectively. The vortex at the tailpipe is reduced, and the blade work effect and the cavitation performance are well. The maximum pressure pulsation amplitude in the flow passage is reduced by 73.15%, the maximum blade deformation is reduced by 39.59%, and the maximum blade static stress is reduced by 13.16%. Finally, the reliability of numerical simulation results is verified by the model test. |
| format | Article |
| id | doaj-art-3df23157559d4dcd9f36cd84f98eb062 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-3df23157559d4dcd9f36cd84f98eb0622025-02-03T05:58:30ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/55814555581455Research on Multiobjective Optimization of Bulb Tubular Turbine Based on Orthogonal TestJie Sun0Ye Zhou1Xinfeng Ge2Jianguo Cai3Yang Han4Hui Zhang5Jinliang Wang6Lei Zhang7Dong Chen8Hongchang Hua9Li Li10Yuan Zheng11Hohai University, Nanjing 210098, Jiangsu Province, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaHohai University, Nanjing 210098, Jiangsu Province, ChinaChongqing Shipping Construction Development Co., Ltd., Chongqing 500000, ChinaChongqing Shipping Construction Development Co., Ltd., Chongqing 500000, ChinaChongqing Shipping Construction Development Co., Ltd., Chongqing 500000, ChinaHuanghe Wanjiazhai Hydro Junction Co., Ltd., Pianguan, Shanxi 036412, ChinaYellow River Institute of Hydraulic Research, Zhengzhou 450003, ChinaHohai University, Nanjing 210098, Jiangsu Province, ChinaHohai University, Nanjing 210098, Jiangsu Province, ChinaHohai University, Nanjing 210098, Jiangsu Province, ChinaHohai University, Nanjing 210098, Jiangsu Province, ChinaThe bulb tubular unit has advantages over other units in the low head, large discharge, and tidal energy. The development and utilization of low head and ultralow head hydraulic resources can increase the runner’s energy parameters, make up for the defects of large size and low speed of the unit, and reduce the construction investment. The bulb tubular turbine’s operation stability and structural strength are compared and analyzed by the orthogonal test method to improve the perfomance of bulb tubular turbine. The results show that the optimal design scheme can be obtained when the number of guide vane is 16, the distance between the guide vane and the blade is 1995 mm, the hub ratio is 0.31, the relative twist angle of the blade is 27°, and the cascade density is 0.72. After optimization, the bulb tubular turbine’s efficiency and output are increased by 5.72% and 2.86% at a low flow rate, respectively. The vortex at the tailpipe is reduced, and the blade work effect and the cavitation performance are well. The maximum pressure pulsation amplitude in the flow passage is reduced by 73.15%, the maximum blade deformation is reduced by 39.59%, and the maximum blade static stress is reduced by 13.16%. Finally, the reliability of numerical simulation results is verified by the model test.http://dx.doi.org/10.1155/2021/5581455 |
| spellingShingle | Jie Sun Ye Zhou Xinfeng Ge Jianguo Cai Yang Han Hui Zhang Jinliang Wang Lei Zhang Dong Chen Hongchang Hua Li Li Yuan Zheng Research on Multiobjective Optimization of Bulb Tubular Turbine Based on Orthogonal Test Shock and Vibration |
| title | Research on Multiobjective Optimization of Bulb Tubular Turbine Based on Orthogonal Test |
| title_full | Research on Multiobjective Optimization of Bulb Tubular Turbine Based on Orthogonal Test |
| title_fullStr | Research on Multiobjective Optimization of Bulb Tubular Turbine Based on Orthogonal Test |
| title_full_unstemmed | Research on Multiobjective Optimization of Bulb Tubular Turbine Based on Orthogonal Test |
| title_short | Research on Multiobjective Optimization of Bulb Tubular Turbine Based on Orthogonal Test |
| title_sort | research on multiobjective optimization of bulb tubular turbine based on orthogonal test |
| url | http://dx.doi.org/10.1155/2021/5581455 |
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