Numerical Analysis On The Performance Of Wave Attenuation Single-layer Arc-plate Type Breakwater

The breakwater is of great significance to defense wave intrusion.Traditional breakwater has some problems such as construction technology complex,high cost and unreasonable use of materials,while the new type of breakwater can compensate for the above problems.Moreover,the plate breakwater can be set in various seas according to the wave factors,which has gained more and more researchers' attention and innovation.Based on the single-level horizontal plate breakwater,we choose finite volume method to study the different of wave-breaking performance of the new single-layer arc(lower arc and upper arc)breakwater and single-layer horizontal plate under different water conditions.Summed up the mono layer arc breakwater wave advantage and applicable conditions.The application of Fluent software was used to develop the UDF program to construct the viscous wave flume.By setting watch-points validation of numerical results and the theoretical results have good fitting effect,and the results of the simulation wave interaction with the horizontal panel with the previous result is broadly in line with a change trend,so as to prove the feasibility of the numerical flume.By using fluent software to build the wave effect on three kinds of breakwater viscous numerical wave flume,discussed the relative wave height,relative plate width,relatively shallow depth,slope and breakwater structure on the properties of the wave impact.The characteristics of the wave dissipation of different slab breakwater structure are summarized.Numerical calculation results show that single arc plate breakwaters under different wave parameter is better than that of the horizontal plate breakwaters in this paper.When the water is out of water,the advantage of the lower arc board breakwater is obvious.In the water condition,the upper arc plate has a good wave effect.In view of this simulation conclusion,the paper also makes a simple inquiry into the wave dissipation mechanism from the structural features of the slab breakwater.When the upper arc plate is out of the water(the arc top is out of the water),the frontal surface is larger than the horizontal plate.According to the conservation of energy,waves over the first half need to climb on the arc of energy dissipation,when the waves reach the couple will continue to consume energy,make it a strong turbulence,which in turn makes waves with arc plate on the dissipation of wave energy is larger,wave effect is better.Arc plate into the water when the structure of the wave approach to the tilt,the oblique wave up with arc plate on the front end under oblique reflection wave action is obvious,when the waves reach arc plate on the back-end will interact with the recycling of back-end reflection wave,thus boosting the overall reflection on the arc of ability so it is concluded that the results of the upper arc plate breakwaters can reflected wave has been larger than arc plate and the horizontal plate breakwaters.The conclusion can provide certain theoretical basis for the actual project,we can reduce wave erosion by selecting suitable plate breakwater according to the wave elements in the sea area.