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Analysis of droplet collision with circular tubes in polar environment
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Dong-wei YU1, 2, 4, Gang WU3, Zhi-bing LIU3, Yang JI1, Chen-yang LIU1, Xue-yang HAN1, Da-yong ZHANG1
Journal of Ship Mechanics | 2024, 28(8) : 1209 - 1220
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Journal of Ship Mechanics | 2024, 28(8): 1209-1220
• Hydrodynamics •
Analysis of droplet collision with circular tubes in polar environment
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Dong-wei YU1, 2, 4, Gang WU3, Zhi-bing LIU3, Yang JI1, Chen-yang LIU1, Xue-yang HAN1, Da-yong ZHANG1
Affiliations
  • 1.School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
  • 2.Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116023, China
  • 3.Marine Design & Research Institute of China, Shanghai 200021, China
  • 4.South China Sea Scientific Experiment Center, Sansha 573199, China
Published: 2024-08-20 doi: 10.3969/j.issn.1007-7294.2024.08.008
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The icing problem seriously threatens the safety of ship navigation in the polar environment. The droplet collection coefficient is to determine how effectively a body collects water droplets and is the key parameter for prediction of ice accretion. In this paper, the Euler method was used to numerically simulate the two-phase flow around a circular cylinder. Analysis of the influence on the trajectory of the droplet by studying the droplet Stokes number (St) and droplet Reynolds number (Rew). Research shows that St has a significant effect on the trajectory of droplets. When St is large (St>1), the collection coefficient depends entirely on the St, Rew influence is weaker, the total collection coefficient and local collection coefficient slowly decrease with the increase of Rew. When St is small (0.26<St<1), as Rew increases, the local and total collection coefficients significantly decrease. Because the fluid forms a vortex downstream of the cylinder, it has a greater flow-following feature at St<0.26, driving droplet coiling to be sucked into the near-wall area at the end of the cylinder, even colliding with the back wall of the cylinder, such that the local and total collection coefficients become larger with the increase of Rew.

Polar region  /  Euler method  /  droplet collection coefficient  /  numerical simulation  /  flow around circular cylinder
Dong-wei YU, Gang WU, Zhi-bing LIU, Yang JI, Chen-yang LIU, Xue-yang HAN, Da-yong ZHANG. Analysis of droplet collision with circular tubes in polar environment[J]. Journal of Ship Mechanics, 2024 , 28 (8) : 1209 -1220 . DOI: 10.3969/j.issn.1007-7294.2024.08.008
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Year 2024 volume 28 Issue 8
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Article Info
doi: 10.3969/j.issn.1007-7294.2024.08.008
  • Receive Date：2024-02-26
  • Online Date：2026-03-26
  • Published：2024-08-20
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  • Received：2024-02-26
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Affiliations
    1.School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
    2.Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116023, China
    3.Marine Design & Research Institute of China, Shanghai 200021, China
    4.South China Sea Scientific Experiment Center, Sansha 573199, 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
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Genus		 种数
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Percentage of total
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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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