ВЗАЄМОДІЯ ПОВЕРХНЕВИХ ГРАВІТАЦІЙНИХ ХВИЛЬ З ПЕРФОРОВАНИМ ЕКРАНОМ

 The paper examines the interaction of surface gravity waves with cylindrical marine structures within the framework of a finite depth fluid model. The problem is considered in a potential formulation. The impact of a perforated screen as a protective element around a cylindrical structure on reducing force loads on it and changing the deflection of the free surface of the water was investigated. The dependence of wave diffraction on screen perforation and its position relative to the cylinder was established. Wave diffraction research methods and their application to solving problems are discussed. Analytical solutions were built and calculations were made on this basis, which allow investigating the influence of the geometric proportions of the structure on the lateral force, in order to establish the minimum and maximum wave loads. The dependence of the total scattering power and the scattering diagram on the physical and geometric parameters of the model was established. It is shown that the perforated screen has the properties of a wave absorber, that is, it can be used as a protective element.