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Based on the open source programme OpenFOAM, a numerical model was established to investigate the behavior of the interaction between waves and the newly-developed open breakwaters with elliptical arc-plate. The numerical model was verified by using theoretical wave surface and previous experimental results. Focusing on the three types of open structures, such as double flat plate, flat-elliptical arc-plate and double elliptical arc-plate open breakwater, a total of 90 cases were designed to analyze their wave attenuation performance. Considering the indexes of transmission coefficient, reflection coefficient and energy dissipation coefficient comprehensively, the numerical results indicate that the open breakwater with flat-elliptical arc-plate exhibits a low-level transmitted wave energy and a high-level reflected wave energy, while the open breakwater with double elliptical arc-plate exhibits a high-level transmitted wave energy and a low-level reflected wave energy under most working conditions. Further analysis revealed that when the structure is placed above the hydrostatic level, the open breakwater with flat-elliptical arc-plate has higher wave attenuation performance compared with the double flat plate type and double elliptical arc-plate. Therefore, the open breakwater with flat-elliptical arc-plate could be selected when it is submerged at suitable depths based on hydrodynamic conditions in engineering practice. This research provides design references for the breakwaters which could simultaneously meet the requirements of wave attenuation and water permeability.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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