Comparison of Hydrodynamic Performances Between Single Pontoon and Double Pontoon Floating Breakwaters Through the SPH Method

• Published in: China ocean engineering Vol. 36; no. 6; pp. 894 - 910
• Main Authors: Chen, Yong-kun, Liu, Yong, Meringolo, Domenico D.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-12-2022; Springer Nature B.V; Shandong Provincial Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China%Dipartimento D.I.C.E.A.M.,Università degli Studi Mediterranea di Reggio Calabria,Via Salita Melissari,89124,Reggio Calabria,Italy
• Subjects: Amplitudes; Breakwaters; Coastal Sciences; Engineering; Floating; Floating breakwaters; Fluid- and Aerodynamics; Free surfaces; Hydrodynamics; Marine & Freshwater Sciences; Mathematical models; Numerical and Computational Physics; Numerical models; Oceanography; Offshore Engineering; Original Paper; Pontoons; Simulation; Two dimensional models; Wave attenuation; smoothed particle hydrodynamics; hydrodynamic characteristics; experimental test; floating pontoon breakwater; experi-mental test
• ISSN: 0890-5487; 2191-8945
• DOI: 10.1007/s13344-022-0078-8

A numerical study adopting the 2D
δ
-SPH model is performed to compare the hydrodynamic characteristics of a single pontoon floating breakwater and a double pontoon floating breakwater. Numerical simulations are performed using the
δ
-SPH model and experimental tests are conducted to validate the numerical model. The numerical results of both the free surface elevations and motions of the floating breakwater are in good agreement with the experimental results. Numerical results show that when the pontoon drafts are larger, the double pontoon floating breakwater performs better in wave attenuations compared with the single pontoon floating breakwater, and for all the drafts, the amplitudes of motions including sway, heave and roll of the double pontoon floating breakwater is always smaller. In addition, increasing the spacing between the two pontoons can further reduce the amplitudes of pontoon motions and improve the wave attenuation ability of the double pontoon floating breakwater.