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Experimental study on the sheltering effect between ice ridges on ice-water drag force
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Shuang Wang1, Peng Lu1, *, Yongheng Zu1, Limin Zhang1, Qingkai Wang1, Zhijun Li1
Haiyang Xuebao | 2022, 44(7) : 170 - 176
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Haiyang Xuebao | 2022, 44(7): 170-176
• Article •
Experimental study on the sheltering effect between ice ridges on ice-water drag force
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Shuang Wang1, Peng Lu1, *, Yongheng Zu1, Limin Zhang1, Qingkai Wang1, Zhijun Li1
Affiliations
  • 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
Published: 2022-07-01 doi: 10.12284/hyxb2022104
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In order to quantitatively study the sheltering effect between multiple ridges keel on sea ice drift, the laboratory experiment is carried out in a tank, which is 0.45 m deep. The shape of keel models is a triangle with 45° slope angle, 4 keel depths and 9 keel spacings are selected in the experiments. The variations of the front and back keel drag force and its ratio under wake effect is investigated. The drag force on the front keel is not affected by the back keel and keeps a linear relationship with the square of keel velocity; however, the drag force of back keel appears negative value (opposite direction) when the keel spacing is small. With the increase of the spacing the drag coefficient of the back keel first decreases and then increases to a constant. The variation of the ratio of drag forces between the front and back can be described by an exponential sheltering function, which is related to keel spacings and keel depths, and independent of keel velocity. Compared with the sheltering functions which are used in present sea ice models, the exponential formula is given and improves our understanding about sheltering function in sea ice dynamic model.

multiple ice ridges  /  drag force  /  the sheltering effect  /  parameterization
Shuang Wang, Peng Lu, Yongheng Zu, Limin Zhang, Qingkai Wang, Zhijun Li. Experimental study on the sheltering effect between ice ridges on ice-water drag force[J]. Haiyang Xuebao, 2022 , 44 (7) : 170 -176 . DOI: 10.12284/hyxb2022104
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Article Info
doi: 10.12284/hyxb2022104
  • Receive Date：2021-07-21
  • Online Date：2026-02-01
  • Published：2022-07-01
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  • Received：2021-07-21
  • Revised：2021-12-17
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    1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
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表12种不同金属材料的力学参数
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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