Abstract
Through the physical model cross-section experiment, the effects of the relative width and groove depth on the transmission coefficient, horizontal wave force and vertical wave force of the new comb-type floating breakwater (FBW) model under fixed condition are observed. The results show that the hydrodynamic parameters of the new comb-type FBW are mainly influenced by its relative width under the action of regular wave, and the transmission coefficient decreases with the increase of its relative width. Especially when the relative width is 0.139 to 0.188, the transmission coefficient of the new comb-type FBW decreases rapidly with the increase of the relative width, and the horizontal wave force and the vertical wave force change slowly. This indicates that the new comb-type FBW has obvious effect on wave dissipation about short and medium waves. In addition, numerical investigations of selected experiment cases are conducted using RANS based commercial CFD code Flow3D. The numerical results show a good ability to capture the hydrodynamic interaction effect of the fixed FBW.
Highlights
The floating breakwater (FBW) is an important port and coastal engineering building, shields the port and related waters mainly
It is suggested that the relative width should be set in this range as far as possible when designing the fixed FBW
It is found that the above three hydrodynamic parameters are most affected by small periodic waves, and the large periodic waves have little influence on them
Summary
The FBW is an important port and coastal engineering building, shields the port and related waters mainly. J. Alizadeh (2014) points out FBWs fixed in semi-submerged state are better than floating breakwaters with single degree of freedom (vertical direction) and moored state in the aspect of the wave energy dissipation characteristics. It is pointed out that the horizontal wave force is proportional to the draft, the relative width and the wave height, and the vertical wave force was proportional to the relative width, the wave period and the wave height It does not carry out systematic data analysis, but study the nonlinear interaction between diffracted wave and incident wave of FBW. It is found that the wave energy dissipation characteristics of T-type FBW with single degree of freedom (heave) is more obvious than that fixed on the water surface, but the wave reflection of T-type FBW with two arrangement forms is just the opposite under the same wave period. By changing the relative width of the FBW, the rules of transmission coefficient and wave force of the new comb-type FBW are discussed in this paper
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
