Research On Mechanical Characteristics Of Wave Interaction With Ocean Engineering Components Based On Numercial Model For Elastic Wave Field In Fluid-Solid Medium

In this paper, the object of study are fluid & solid elastic medium and fluid-solid, and the interaction between ocean waves and ocean engineering components have been researched. First, the interaction between ocean waves and ocean engineering structures were discussed in domestic and overseas.Secondly, on the basis of the introduction of the fluid dynamics and solid elastic dynamics theory and the elastic wave propagation characteristics, a method for elastic wave numerical analysis is proposed based on point sources method and Green's function. Third, respectively, the interaction between ocean waves and two-dimensional inclined surface structure and horizontal structure have been modeled by mathematical method, and the numerical simulation and experimental result have been studied. Finally, the accuracy and efficiency of this method has been proved by numerical simulation and experiments. The generality of the method has been verified by simulation and practical results.The range of application base on the point model was expanded.Chapter 1 gives a comprehensive description about the research work's background and significance, the current research status of the interaction between ocean waves and ocean engineering structures at home and abroad. Some problems existed in this area are pointed out and the main research content is given.Chapter 2 proposes the basic theory of elastic wave propagation were introduced in fluid & solid mediums. And the common types of elastic waves were discussed in elastic space. And then, the characteristics of propagation of the elastic wave were discussed in ideal fluid. Respectively, the reflection and refraction of elastic waves in the fluid-fluid interface and fluid-solid interface were analyzed, it supplies basis for latter chapters.Chapter 3 puts forward a method based on point source method and Green's function for numerical analysis of elastic wave fields in elastic mediums. With this method, the key mechanical parameters of elastic wave propagation were discussed in fluid and solid mediums. Respectively, the wave fields were modeled in fluid and solid space mediums, it supplies modeling foundation for specific examples in latter chapters.Chapter 4 builds an mathematical model of the interaction between ocean waves and two-dimensional inclined surface structure on the base of the wave fields analysis. and then specific examples were discussed by numerical analysis. The reasonableness and effectiveness of the model have been verified by simulation and practical results.Chapter 5 focuses on the interaction between ocean waves and two-dimensional horizontal surface structure. And the structure have been modeled by mathematical method. In submerged and partially submerged environment, the numerical simulation and experimental result have been studied. Then, the accuracy and efficiency of this method has been proved. The generality of the method has been verified by simulation and practical results. The range of application base on the point model was expanded.The last chapter summaries the main research conclusion and key innovative points, and then further research work is put forward.