Abstract
In this paper, the transient fluid resonance phenomenon inside a narrow gap between two adjacent boxes excited by the incident focused waves with various spectral peak periods and focused wave amplitudes is simulated by utilizing the open-sourced computational fluid dynamics software, OpenFOAM. The weather-side box is allowed to heave freely under the action of waves, and the lee-side box keeps fixed. This paper mainly focuses on how both the spectral peak period and the focused wave amplitude affect the free-surface amplification inside the gap, the motion of the weather-side box, and the wave loads (including the vertical and the horizontal wave forces) acting on both boxes. For comparison, another two-box system with both boxes fixed is also considered as a control group. It is found that the motion of the weather-side box significantly changes the characteristics of the transient gap resonance, and it would cause that the fluid resonant period becomes 1.4–1.6 times that of the two-box system with both boxes fixed. All the concerned physical quantities (i.e., the free-surface amplification in the gap, the motion of the weather-side box, the wave loads) are found to closely depend on both the spectral peak period and the focused wave amplitude.
| Original language | English |
|---|---|
| Pages (from-to) | 994-1006 |
| Number of pages | 13 |
| Journal | China Ocean Engineering |
| Volume | 36 |
| Issue number | 6 |
| Early online date | 31 Dec 2022 |
| DOIs | |
| Publication status | Published - 19 Jan 2023 |
Funding
This research is financially supported by the National Natural Science Foundation of China (Grant No. 51911530205), the Natural Science Foundation of Jiangsu Province (Grant Nos. BK20201455 and BK20210885), the Key Laboratory of Port, Waterway and Sedimentation Engineering of MOT (Grant No. YK222001-2), the Shandong Provincial Key Laboratory of Ocean Engineering (Grant No. kloe202010), the Key R&D Projects in Guangdong Province (Grant No. 2020B1111500001), and the Qing Lan Project of Jiangsu Universities. The authors also thank the Royal Society (Grant No. IEC\NSFC\181321) for providing partial support for this work.
Keywords
- focused waves
- free-surface amplification
- heave motion
- OpenFOAM
- transient gap resonance
- wave loads
ASJC Scopus subject areas
- Oceanography
- Renewable Energy, Sustainability and the Environment
- Ocean Engineering
- Mechanical Engineering
Access to Document
- Revised Manuscript - COE
This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://link.springer.com/article/10.1007/s13344-022-0087-7