| The ocean contains a large variety of resources,and the development of marine resources has ensured food security has become a global consensus.In order to promote the conversion of new and old kinetic energy,the province promulgated the“Shandong Province Marine Ranch Construction Plan(2017-2020)”to focus on building a green ecological modern marine pasture.Traditional breakwaters are not suitable for the exchange of water bodies,high cost,long construction period,affected by water depth and geological conditions,etc.,and are not suitable for the protection of marine pastures.The plate type permeable embankments have low cost,easy construction and application of various soft soil foundations.It is suitable for deep sea and is beneficial to the exchange of water bodies in marine pastures.It can solve the above shortcomings and can play an effective role in the protection of marine pastures.In this paper,the wave generation method is used to simulate wave generation,the damping wave-clearing area is used to eliminate the wave reflection at the tail of the water tank,the N-S equation is used to describe the fluid motion,the VOF method is used to capture the free surface of the fluid,and the wave and plate type are constructed based on the finite volume method.A numerical model of the interaction between empty dikes.On the basis of verifying the accuracy of the test results,the effects of different plate type permeable embankments on the wave transmission coefficient K_t,reflection coefficient K_r,energy consumption coefficient K_d and energy distribution were compared.The study found that the double arc arc plate type permeable embankment has better wave-eliminating ability,and the double-layer arc plate type permeable embankment has been deeply studied.Through the numerical calculation results,the K_t of the double arc plate type permeable embankment is the smallest,the K_t of the double plate type permeable embankment is the largest,and the single arc plate type permeable bank is waved.The K_t is centered;when the levee is flush with the water surface,the K_t of the double arc plate type permeable embankment has the smallest K_t under 90%of the working conditions,and the K_t is the highest compared to the double plate type and the single arc plate type permeable embankment.It can be reduced by about 45%and 38%,respectively.When the air levee is in the water inlet state,the K_t of the double arc plate type permeable bank is the largest,the K_t of the double plate type permeable bank is the smallest,and the K_t of the single arc plate type permeable bank is centered by the wave.In the range of test conditions of this number of times,the double arc plate type permeable embankment has the smallest K_r of the wave and the maximum energy consumption coefficient K_d;the double plate type permeable embankment has the largest K_r of the wave,and the energy consumption coefficient K_d is the smallest;the single arc plate type is transparent.The K_r and the energy dissipation coefficient K_d of the bank are centered.According to the conclusion reached,the paper further studies the wave-elim inating characteristics of the double-layer arc-plate type transparent embankment.The numerical results show that the K_t of the double arc plate type permeable e mbankment is smaller than the K_t when it enters the water state when the doubl e arc plate type permeable embankment is in the state of water discharge and fl ush with the water surface.Under different plate spacings S,the K_t phase differe nce of the double arc plate type permeable embankment is not large,and the K_t is relatively small when the arc plate arc height d0=0.1m.In this paper,a num erical simulation method is proposed to provide a transparent foundation with go od wave-eliminating effect,which provides a theoretical basis for the protection of marine pastures. |
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