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Ice ridges are one of the typical features of polar ice underlying surface. Understanding the interaction between ice ridge and fluid flow is important for the navigation of submersibles. Five groups of typically spaced ice ridges were established based on the polar field data to investigate the influence of ice ridges on the fluid flow beneath the ice surface and its influence range. By solving the steady-state Reynolds stress equation model (RSM) through Fluent software, the effect of ice ridge spacing on fluid flow beneath the ice was studied. The relationship between spacing and wake vortex oscillation was explored. The radiation depth of ice ridge interference with the ice flow field was also studied. The numerical result shows that the continuous ice ridges have a tensile effect on the tail vortex. Depending on the level of interference, radiation depth can be divided into three ranges: strong radiation area, stable radiation area and no influence area.
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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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