Study On The Shield Effect Of Artificial Islands In Artificial Island Group Under The Action Of Irregular Waves

Artificial island is a new form of human utilization of marine space resources for all kinds of purposes, artificial construction in the sea and the formation of islands. In the design of artificial island, the wave is the main factor of ocean dynamics, so the design of artificial island is the key factor in the design of artificial island. Using artificial island group in the outside of the artificial island doubles as the periphery of the cover of artificial islands plan layout, the periphery of the artificial island and do breakwater reduction gusts of wind, wave and flow effects, decreasing the medial artificial island land elevation, with obvious advantages. The application of Mike 21-BW model on the outside edges of the artificial island doubles as a peripheral cover artificial island of different layout of the artificial island group is studied by numerical simulation, are given under the action of irregular wave different layout of the artificial island surrounded by the wave height distribution, discusses the external artificial island on the inner side of the artificial island sheltering effect and influencing factors.First select the same physical experiments with isolated circular artificial island diffraction conditions corresponding numerical simulation is carried out, and results of physical experiment and compared to verify the applicability of Mike 21-BW model. Application by experimental verification of the numerical model of isolated circular artificial island is studied by numerical simulation, are given under the action of irregular wave circular artificial island surrounding diffraction coefficients and circular artificial island relative size PI D/L, different water depths between.Secondly, to consists of an inner circular artificial island and the rectangular outer artificial island consisting of man-made islands in the wave field was numerically simulated. Effects of peripheral rectangular artificial island relative width B/D, before and after the artificial island from H/D and inner circular artificial island center and peripheral rectangular artificial island ends clamped angle alpha factors such as on the inner circular artificial island sheltering effect are discussed, and on this basis, discusses the different periods of irregular waves on the inner circular artificial island sheltering effect influence.Finally, on consists of an inner circular artificial island and peripheral curved artificial island consisting of man-made islands in the wave field was numerically simulated. Discusses the effect of relative to the peripheral curved artificial island width B/D, before and after the artificial island distance H/D, factor of inner circular artificial island sheltering effect, and in front of the numerical simulation based on the compared peripheral rectangular artificial island and peripheral curved artificial island sheltering effect.