Study on FSI Analysis Method of a Large Hydropower House and Its Vortex-Induced Vibration Regularities
The working principle of a large hydropower station is to guide the high-pressure water flow to impact the turbine to rotate and generate electricity. The high-pressure water flow impacts the turbine blades, which forms complex high-speed eddy currents in the spiral case and the draft tube and cause...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/7596080 |
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| _version_ | 1832567717169725440 |
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| author | Liaojun Zhang Guojiang Yin Shuo Wang Chaonian Guan |
| author_facet | Liaojun Zhang Guojiang Yin Shuo Wang Chaonian Guan |
| author_sort | Liaojun Zhang |
| collection | DOAJ |
| description | The working principle of a large hydropower station is to guide the high-pressure water flow to impact the turbine to rotate and generate electricity. The high-pressure water flow impacts the turbine blades, which forms complex high-speed eddy currents in the spiral case and the draft tube and causes complicated vortex-induced vibration problems. Traditionally used harmonic response methods and dynamic time-history analysis methods are difficult to reflect this complex fluid-solid dynamic coupling problem. In this paper, the bidirectional fluid-structure interaction (FSI) simulation analysis theory for a large hydropower house is studied, and the analysis methods of geometric simulation, mechanical simulation, and vibration energy transmission path simulation are presented. A large-scale 3D fluid-hydraulic machinery-concrete structure coupled model of a hydropower house is established to study the vortex-induced vibration mechanism and coupled vibration law during transient unit operation. A comparison of the fluid results against the in-site data shows good agreement. Structural responses of vibration displacement, velocity, and acceleration reveal coupled regularity of hydraulic machinery-concrete structure-fluid during blades rotating periods, and it comes to the conclusion that the turbine blade rotation is the main vibration source of the hydropower house. The research results can provide a scientific basis for the design and safe operation of the hydropower house. |
| format | Article |
| id | doaj-art-36dbff3fab6f444e8c7275eccfc0e7a3 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-36dbff3fab6f444e8c7275eccfc0e7a32025-02-03T01:00:39ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/75960807596080Study on FSI Analysis Method of a Large Hydropower House and Its Vortex-Induced Vibration RegularitiesLiaojun Zhang0Guojiang Yin1Shuo Wang2Chaonian Guan3College 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, ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, ChinaThe working principle of a large hydropower station is to guide the high-pressure water flow to impact the turbine to rotate and generate electricity. The high-pressure water flow impacts the turbine blades, which forms complex high-speed eddy currents in the spiral case and the draft tube and causes complicated vortex-induced vibration problems. Traditionally used harmonic response methods and dynamic time-history analysis methods are difficult to reflect this complex fluid-solid dynamic coupling problem. In this paper, the bidirectional fluid-structure interaction (FSI) simulation analysis theory for a large hydropower house is studied, and the analysis methods of geometric simulation, mechanical simulation, and vibration energy transmission path simulation are presented. A large-scale 3D fluid-hydraulic machinery-concrete structure coupled model of a hydropower house is established to study the vortex-induced vibration mechanism and coupled vibration law during transient unit operation. A comparison of the fluid results against the in-site data shows good agreement. Structural responses of vibration displacement, velocity, and acceleration reveal coupled regularity of hydraulic machinery-concrete structure-fluid during blades rotating periods, and it comes to the conclusion that the turbine blade rotation is the main vibration source of the hydropower house. The research results can provide a scientific basis for the design and safe operation of the hydropower house.http://dx.doi.org/10.1155/2020/7596080 |
| spellingShingle | Liaojun Zhang Guojiang Yin Shuo Wang Chaonian Guan Study on FSI Analysis Method of a Large Hydropower House and Its Vortex-Induced Vibration Regularities Advances in Civil Engineering |
| title | Study on FSI Analysis Method of a Large Hydropower House and Its Vortex-Induced Vibration Regularities |
| title_full | Study on FSI Analysis Method of a Large Hydropower House and Its Vortex-Induced Vibration Regularities |
| title_fullStr | Study on FSI Analysis Method of a Large Hydropower House and Its Vortex-Induced Vibration Regularities |
| title_full_unstemmed | Study on FSI Analysis Method of a Large Hydropower House and Its Vortex-Induced Vibration Regularities |
| title_short | Study on FSI Analysis Method of a Large Hydropower House and Its Vortex-Induced Vibration Regularities |
| title_sort | study on fsi analysis method of a large hydropower house and its vortex induced vibration regularities |
| url | http://dx.doi.org/10.1155/2020/7596080 |
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