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In order to reduce the risk of boil-over accidents in storage tanks and develop efficient prevention and control strategies，two-dimensional transient numerical simulations of the boiling process of oil-water two-phase system in closed containers were carried out using Fluent software. The effects of different tank types，initial water layer thickness，oil-water ratio and other factors on the boiling process were analyzed through numerical simulation. The phase distribution，temperature field and hydrodynamic behavior were studied during the whole process of the combustion triggering to the end of the boil-over. The results show that for the same tank type，the higher the water content of the oil，the smaller the intensity of boiling overflow. When the tank boils over，the oil-water interface undergoes violent instability，and the two phases of the medium in the container are interspersed with each other，presenting a chaotic state. The liquid near the tank wall of boils upward first，with the peak temperature of the liquid phase up to 400 K. When the horizontal storage tank boils over，the overall temperature of the liquid phase is lower than that in the vertical storage tank. The onset of boiling overflow in the horizontal tank occurs earlier than in the vertical tank. Therefore，the boiling overflow in the vertical tank is more dangerous.
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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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