Tank sloshing is a common phenomenon in ship navigation, which not only affects the stability of a ship, but also poses a threat to the marine environment and human life. How to reduce the amplitude of tank sloshing has always been a key research problem in ocean engineering. In this paper, based on the improved moving particle semi-implicit method, BM-MPS method, the damping effect of vertical open-hole separator under lateral excitation was simulated and studied, and the influence of porosity and lateral amplitude of the separator on resonance period and impact duration curve morphology was discussed. The results show that the size of porosity has an obvious effect on the resonance period. The porosity of 15% is the point where the maximum impact pressure is the minimum when the resonance is reached, and the resonance period is in the transition period of obvious transformation. The impact duration curve is also closely related to porosity. With the increase of porosity, the impact duration curve changes from no peak to single peak and then to double peak. In addition, the amplitude of excitation is also one of the factors affecting the resonance period.
| 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 |