Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting Technology
There have been several cases of large cooling towers being damaged by wind in history. A typhoon has the characteristics of a strong wind field energy and large shear wind speed. This paper simulates the entire collapse process of large hyperbolic cooling towers by the action of typhoons and refine...
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MDPI AG
2022-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/9/4178 |
| _version_ | 1797505760248201216 |
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| author | Hongxin Wu Shitang Ke Feitian Wang Weihua Wang |
| author_facet | Hongxin Wu Shitang Ke Feitian Wang Weihua Wang |
| author_sort | Hongxin Wu |
| collection | DOAJ |
| description | There have been several cases of large cooling towers being damaged by wind in history. A typhoon has the characteristics of a strong wind field energy and large shear wind speed. This paper simulates the entire collapse process of large hyperbolic cooling towers by the action of typhoons and refines the typhoon-induced failure mechanism for cooling towers. Firstly, based on WRF-CFD wind field downscaling technology, a fine simulation of the near-ground multiscale wind field produced by China’s strongest typhoon “Typhoon Rammasun” is performed to extract effective three-dimensional (3D) typhoon load input parameters. Then, by loading the obtained 3D wind load on the finite element model, a pseudo-dynamic analysis of the world’s tallest cooling tower “Luan Cooling Tower” is performed based on LS-DYNA explicit dynamic analysis, and the typhoon-induced collapse process is simulated. Finally, the stress distribution and distortions of the tower and the response time history of key units are compared and analyzed to determine the collapse mechanism. The process of collapse begins with large deformation of the windward surface of the tower throat, which shows folds in the range of 62° on both sides. Eventually, collapse occurs due to uncoordinated deformation. The collapse mechanism can be divided into a bending arch mechanism and a suspension wire mechanism. |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T04:22:49Z |
| publishDate | 2022-04-01 |
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| spelling | doaj.art-5d580137cfcd406db3efc51e8846361f2023-11-23T07:45:22ZengMDPI AGApplied Sciences2076-34172022-04-01129417810.3390/app12094178Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting TechnologyHongxin Wu0Shitang Ke1Feitian Wang2Weihua Wang3Department of Airport and Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaDepartment of Airport and Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaDepartment of Airport and Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaDepartment of Airport and Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaThere have been several cases of large cooling towers being damaged by wind in history. A typhoon has the characteristics of a strong wind field energy and large shear wind speed. This paper simulates the entire collapse process of large hyperbolic cooling towers by the action of typhoons and refines the typhoon-induced failure mechanism for cooling towers. Firstly, based on WRF-CFD wind field downscaling technology, a fine simulation of the near-ground multiscale wind field produced by China’s strongest typhoon “Typhoon Rammasun” is performed to extract effective three-dimensional (3D) typhoon load input parameters. Then, by loading the obtained 3D wind load on the finite element model, a pseudo-dynamic analysis of the world’s tallest cooling tower “Luan Cooling Tower” is performed based on LS-DYNA explicit dynamic analysis, and the typhoon-induced collapse process is simulated. Finally, the stress distribution and distortions of the tower and the response time history of key units are compared and analyzed to determine the collapse mechanism. The process of collapse begins with large deformation of the windward surface of the tower throat, which shows folds in the range of 62° on both sides. Eventually, collapse occurs due to uncoordinated deformation. The collapse mechanism can be divided into a bending arch mechanism and a suspension wire mechanism.https://www.mdpi.com/2076-3417/12/9/4178super-large cooling towertyphoon wind fieldWRF-CFD-LS/DYNA nesting technologycollapse processcollapse mechanism |
| spellingShingle | Hongxin Wu Shitang Ke Feitian Wang Weihua Wang Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting Technology Applied Sciences super-large cooling tower typhoon wind field WRF-CFD-LS/DYNA nesting technology collapse process collapse mechanism |
| title | Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting Technology |
| title_full | Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting Technology |
| title_fullStr | Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting Technology |
| title_full_unstemmed | Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting Technology |
| title_short | Typhoon-Induced Failure Process and Collapse Mechanism of Super-Large Cooling Tower Based on WRF-CFD-LS/DYNA Nesting Technology |
| title_sort | typhoon induced failure process and collapse mechanism of super large cooling tower based on wrf cfd ls dyna nesting technology |
| topic | super-large cooling tower typhoon wind field WRF-CFD-LS/DYNA nesting technology collapse process collapse mechanism |
| url | https://www.mdpi.com/2076-3417/12/9/4178 |
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