Resolving wave and laminar boundary layer scales for gap resonance problems
Free surface oscillations in a narrow gap between elongated parallel bodies are studied numerically. As this represents both a highly resonant system and an arrangement of relevance to offshore operations, the nature of the damping is of primary interest, and has a critical role in determining the r...
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| Veröffentlicht in: | Journal of fluid mechanics 2019-05, Vol.866, p.759-775 |
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| container_title | Journal of fluid mechanics |
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| creator | Wang, H. Wolgamot, H. A. Draper, S. Zhao, W. Taylor, P. H. Cheng, L. |
| description | Free surface oscillations in a narrow gap between elongated parallel bodies are studied numerically. As this represents both a highly resonant system and an arrangement of relevance to offshore operations, the nature of the damping is of primary interest, and has a critical role in determining the response. Previous experimental work has suggested that the damping could be attributed to laminar boundary layers; here our numerical wave tank successfully resolves both wave and boundary layer scales to provide strong numerical evidence in support of this conclusion. The simulations follow the experiments in using wave groups so that the computation is tractable, and both linear and second harmonic excitation of the gap are demonstrated. |
| doi_str_mv | 10.1017/jfm.2019.115 |
| format | Article |
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A. ; Draper, S. ; Zhao, W. ; Taylor, P. H. ; Cheng, L.</creator><creatorcontrib>Wang, H. ; Wolgamot, H. A. ; Draper, S. ; Zhao, W. ; Taylor, P. H. ; Cheng, L.</creatorcontrib><description>Free surface oscillations in a narrow gap between elongated parallel bodies are studied numerically. As this represents both a highly resonant system and an arrangement of relevance to offshore operations, the nature of the damping is of primary interest, and has a critical role in determining the response. Previous experimental work has suggested that the damping could be attributed to laminar boundary layers; here our numerical wave tank successfully resolves both wave and boundary layer scales to provide strong numerical evidence in support of this conclusion. 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| ispartof | Journal of fluid mechanics, 2019-05, Vol.866, p.759-775 |
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| source | Cambridge University Press Journals Complete |
| subjects | Agreements Boundary layers Computation Computer simulation Damping Experiments Finite volume method Free surfaces Friction Harmonic excitation JFM Papers Laboratories Laminar boundary layer Offshore operations Oscillations Simulation Time series Wave groups Wave tanks |
| title | Resolving wave and laminar boundary layer scales for gap resonance problems |
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