Effects of Thom disk on alleviating ground effects of a wall-mounted rotating cylinder
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866915066911129600 |
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| author | Zhao, Bao-Yuan Zhang, Kai Zhou, Dai Hu, Shiliang Wang, Hanfeng |
| author_facet | Zhao, Bao-Yuan Zhang, Kai Zhou, Dai Hu, Shiliang Wang, Hanfeng |
| contents | This study investigates the effects of Thom disks on alleviating ground effects by wall-mounted rotating cylinders, also known as Flettner rotors, which utilize wind energy for ship propulsion. Through three-dimensional direct numerical simulations, our findings reveal that introducing a secondary Thom disk near the ground significantly reduces the three-dimensional flow pattern induced by the ground, leading to a more uniform pressure distribution along the rotor's surface. We also explore how the vertical placement of a secondary Thom disk influences wake dynamics and aerodynamic forces. Optimal placement of the secondary disk is found at the ground, which maximizes the lift-to-drag ratio. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_12240 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Effects of Thom disk on alleviating ground effects of a wall-mounted rotating cylinder Zhao, Bao-Yuan Zhang, Kai Zhou, Dai Hu, Shiliang Wang, Hanfeng Fluid Dynamics This study investigates the effects of Thom disks on alleviating ground effects by wall-mounted rotating cylinders, also known as Flettner rotors, which utilize wind energy for ship propulsion. Through three-dimensional direct numerical simulations, our findings reveal that introducing a secondary Thom disk near the ground significantly reduces the three-dimensional flow pattern induced by the ground, leading to a more uniform pressure distribution along the rotor's surface. We also explore how the vertical placement of a secondary Thom disk influences wake dynamics and aerodynamic forces. Optimal placement of the secondary disk is found at the ground, which maximizes the lift-to-drag ratio. |
| title | Effects of Thom disk on alleviating ground effects of a wall-mounted rotating cylinder |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2412.12240 |