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Numerical Modelling Investigation of Wave Interaction on Composite berm breakwater

China Ocean Engineering 2021年第5期35卷 631-645页

作者： Seyed Morteza MARASHIAN Mehdi ADJAMI Ahmad Rezaee MAZYAK Water and Environmental Engineering Department Faculty of Civil EngineeringShahrood University of TechnologyShahroodIran Faculty of Civil and Environmental Engineering Tarbiat Modares UniversityTehranIran

The breakwaters have experienced many changes during their construction *** changes have been considered to improve their performance,depending on their environmental conditions and *** modelling was conducted using FLOW-3 D *** this study,the wave overtopping from composite berm breakwater as new conceptual structure and the pressure imposed on the composite berm breakwater are considered and *** results show a decrease of 84.01,70.88 and 61.42 percent of the wave overtopping in the composite berm breakwater,in comparison to the rubble mound breakwater,horizontally caisson breakwater and caisson breakwater,***,the pressure applied to the composite berm breakwater with the pressure applied to the horizontally caisson breakwater was compared and *** berm breakwater compared with horizontally caisson breakwater in P1,the amount of the obtained pressure decreased by 52.09%,in P2 the amount of the obtained pressure decreased by 63.07%,in P3 decreased by 76.09%and in Pu,this pressure reduced by53.92%.For the composite berm breakwater,the impact of three types of berms,homogenous berm(Type 1),a berm consisting of armor-filter(Type 2)and multi-layer berm(Type 3)with the aim of optimizing the hydraulic responses and wave interaction on the caisson of the breakwater was examined and *** total,Type 3 will be recommended with a significant reduction in the overtopping values and maximum pressure.

关键词： composite berm breakwater wave interaction berm breakwater wave overtopping pressure rubble mound breakwater horizontally caisson breakwater caisson breakwater

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Numerical Simulation of Spatial Distribution of Wave Overtopping on Non-reshaping berm breakwaters

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Journal of Marine Science and Application 2020年第2期19卷 301-316页

作者： Mahmood Nematollahi Mohammad Navid Moghim Department of Civil Engineering Isfahan University of TechnologyIsfahan 84156Iran

This study presents the results of a 2D numerical modeling investigation on the performance of non-reshaping berm breakwaters with a special look at the spatial distribution of irregular wave overtopping using FLOW-3D CFD *** numerical model is based on Reynolds-Averaged Navier-Stokes solver(RANS)and volume of fluid(VOF)surface capturing scheme(RANS-VOF).The numerical model has been validated using experimental *** armor and core porosities have been used as calibration factors to reproduce the wave overtopping *** computed distributions of wave overtopping behind the structure agree well with the measurements for a non-reshaping berm breakwater.A formula is derived to relate the spatial distribution of wave overtopping water behind non-reshaping berm breakwaters to non-dimensional forms of wave height,wave period,berm width,berm height,and armor freeboard based on numerical *** formula model agreed reasonably well with numerical model results.

关键词： Wave overtopping Spatial distribution berm breakwater Numerical simulation Non-reshaping

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