Numerical Simulation Study of the Hydrodynamic Properties of a Floating Breakwater of Pontoons

• Autorzy: Cheng Xiaofei , Li Shimin , Xie Wei , Xu Chenhan , Wang Junnan , Xu Tiaojian

Identyfikatory

DOI

10.2478/pomr-2025-0035

• Języki publikacji: EN

Abstrakty

EN

To address the issue of insufficient wave dissipation capacity in standard floating breakwaters consisting of pontoons, this research proposes a combined floating breakwater with T-block connections. AQWA software is used to conduct numerical simulation studies on the dissipation characteristics of waves, and the reliability of the results is confirmed by integrating them with tests of a physical model. It is found that the transmission coefficient of the combined floating breakwater increases with the wave period. When the incident wave period T<6 s, increasing the relative height of the T-block improves the wave dissipation performance; when T>6 s, the effect is weakened; and at T=8 s, the change in height is basically unaffected. Increasing the relative width of the T-block is more significant in terms of the enhancement of the wave dissipation performance, whereas the height of the incident wave has a smaller effect on the transmission coefficient, and the transmission coefficient tends to increase with the increase of the wave height only in the case where T=8 s. The height of the incident wave has little effect on the transmission coefficient. The transmission coefficient increases with the wave height only when T=8 s; when the wave period is small (e.g. 4 s), the effect of wave elimination is enhanced by increasing the draught depth, and the draught does not have a significant effect on the wave dissipation performance when T>6 s. Compared with a typical floating pontoon breakwater with a single- and double-row arrangement, the combined floating pontoon breakwater has a better effect in terms of dissipating the waves, and its advantage is significant for a period T≤6 s, with a 44% increase in the maximum wave abatement compared to a single-row arrangement. In addition, the free-motion response is analysed to clarify the effects of different factors on the transverse and pendulum motion. This study provides an important reference for the design and application of floating pontoon breakwaters.

Słowa kluczowe

EN

floating pontoon breakwater; AQWA; numerical simulation; wave dissipation characteristics; motion response

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2025
• Tom: nr 3
• Strony: 47--65
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Cheng Xiaofei

• School of Civil and Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, China

• https://orcid.org/0000-0001-8909-9737

autor

Li Shimin

• School of Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, China

• https://orcid.org/0009-0008-5789-8970

autor

Xie Wei

• School of Civil and Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, China

• https://orcid.org/0009-0008-1880-7378

autor

Xu Chenhan

• School of Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, China

• https://orcid.org/0009-0003-4268-3268

autor

Wang Junnan

• School of Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, China

• https://orcid.org/0009-0003-5289-4560

autor

Xu Tiaojian

• State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

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