Numerical Study on Wave Dissipation Characteristics of Open Breakwater for Erosion Protection of Muddy Coasts

Li, X.; Sun, J.; You, Z.; Zhang, J.; Wang, L.; Zhang, Z.; Li, Q., and Xie, T., 2020. Numerical study on wave dissipation characteristics of open breakwater for erosion protection of muddy coasts. In: Zheng, C.W.; Wang, Q.; Zhan, C., and Yang, S.B. (eds.), Air-Sea Interaction and Coastal Environments of the Maritime and Polar Silk Roads. Journal of Coastal Research, Special Issue No. 99, pp. 214–220. Coconut Creek (Florida), ISSN 0749-0208.In the recent 60 years, accompanied by the remarkable decline of its sediment into the sea, The Yellow River Delta has been experiencing severe erosion. Based on this, this paper attempts to propose a new type of open breakwater with good wave-dissipating performance, which can be used to protect the Yellow River Delta from extensive erosion (Wang et al., 2016a). In this study, a numerical model for the interactions between waves and plate-type open breakwaters are constructed using the finite volume method, and their correctness is validated by experimental results. The numerical results show that, by comprehensively considering Kt, Kr, the double arc-shaped plate-type (DAPT) open breakwater is found to exhibit the highest wave-dissipating performance among the double flat plate-type (DFPT), single arc-shaped plate-type (SAPT) open breakwater and double arc-shaped plate-type (DAPT) open breakwater.