Study on the Wave-Dissipation Effect of Oyster Reefs Based on the SWAN Numerical Model

Abstract

In the “Blue Bay Remediation Action” project, the oyster reef plays the dual role of ecological restoration and wave suppression, and the study of the effect of oyster reef wave dissipation forms the basis of relevant projects. Taking the Binzhou oyster reef ecological restoration project as its object, this paper studied the wave-dissipating effect of the oyster reef, using the SWAN model. The simulation results showed that after the deployment of oyster reefs in extreme high-water-level conditions, they could produce a wave-dissipation effect, with a wave-dissipation rate between 8% and 21%. Significant wave-dissipation effects can be produced under the designed high-water-level conditions, with a wave-height dissipation rate of 42% to 65%. Among them, the wave-dissipation effect of oyster reefs was more significant for waves coming from the ENE, NE, N, and NNE directions. This study could provide a scientific reference for the design and layout of oyster reefs.