Study On The Numerical Effect Of Waves On The Sheep’s Horn-type Permeable Breakwater

With the development of offshore engineering,plate permeable breakwaters a new type of hydraulic structure.The water area in the maintenance breakwater is relatively stable,and the water body can flow freely to maintain the green marine environment,and has the advantages of simple structure layout,low price of engineering materials,the engineering operation 、 the maintenance and repair is convenient,and it is mostly used in deep water areas.Based on this plate permeable embankment structure,in this paper,the main body of the horn-type permeable structure is concentrated near the free water surface,and a wave baffle is added to the front end of the plate structure and the upper and lower sides of the rear end of the plate,which is the research object of this paper,and now it is necessary to explore and study the type of sheep’s horn-type permeable breakwater structure to improve its application ability in port and marine engineering.Analysis the hydrodynamic characteristics of the interaction between the sheep’s horn-type permeable breakwater and the wave.This paper uses Fluent,a software for computational fluid dynamics according to the Navier-Stokes equation for incompressible viscous fluids.A two-dimensional wave numerical tank is established by the VOF method,a UDF program constructs the viscous wave sink and adds the wave elimination zone at the end of the sink,uses the velocity potential to create waves,and realizes the two-dimensional linear regular wave and the second-order stokes wave by using the finite volume method,and the mathematical model verification is compared with the test results of Huang Lu’s physical model,and the results fit well.The hydrodynamic characteristics of three different structural types of vertical sheep arc type and deep sheep arc type of sheep’s horn-type permeable breakwater in different plate lengths can be studied.The pressure data at different locations are obtained by setting monitoring points on the numerical model and analyzing the wave pressure applied to the surface of the structure.Under the action of regular waves,the force characteristics of the sheep’s horn-type permeable breakwater were studied.The force characteristics of the structure were analyzed by different wave elements,and then the effects of different relative wave heights and relative dike widths on the total X-and Z-directional wave forces were analyzed.Analyzing the data,different wave elements have considerable influence on the force characteristics of the structure.The changes of different relative wave height and relative width had significant effects on the total force of each measuring surface of structures.Finally,the force characteristics of several types of horn-type permeable embankments are compared.The results show that the upper force on the front curved wall wave retaining plate increases with the increase of water depth.Under the premise of large water depth and large wave high cycle,the deep sheep arc type of this type of horn-type permeable breakwater has the least force;the variation of the total wave force of the deep-arc type permeable breakwater is relatively stable compared with the other two types of breakwater.