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Numerical simulation method and verification of bio-hydrodynamics based on CFD
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Yi-kun FENG1, Yu-min SU2, Xiao-jun XU1, Huan-xing LIU3, Zhao-li WANG4
Journal of Ship Mechanics | 2024, 28(2) : 204 - 219
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Journal of Ship Mechanics | 2024, 28(2): 204-219
• Hydrodynamics •
Numerical simulation method and verification of bio-hydrodynamics based on CFD
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Yi-kun FENG1, Yu-min SU2, Xiao-jun XU1, Huan-xing LIU3, Zhao-li WANG4
Affiliations
  • 1.College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China
  • 2.Science and Technology on Underwater Vehicle Laboratory, Harbin Engineering University, Harbin 150001, China
  • 3.Beijing Institute of Specialized Machinery, Beijing 100143, China
  • 4.Beijing Institute of Control Engineering, Beijing 100094, China
Published: 2024-02-20 doi: 10.3969/j.issn.1007-7294.2024.02.004
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Through long-term evolution and natural selection, fish have excellent swimming ability in water. With the help of the caudal fins, fish can perform fast and efficient straight-line swimming and fast start/maneuver. With the help of the pectoral fins, fish can move forward, backward and turn flexibly. Based on computational fluid dynamics (CFD) method, a mesh division strategy was proposed to solve the rigid motion of the caudal/pectoral fins and the flexible motion of the fish bodies. The hydrodynamic performance of the caudal/pectoral fins and the fish in uniform flow and the fish’s self-propelled swimming in still water were numerically simulated. The results show that the dynamic mesh method can simulate the rigid or flexible movement of fins and fish bodies effectively by using the hybrid mesh strategy of structure and non-structure based on CFD method. The effectiveness of the method in solving the hydrodynamic performance was verified by comparing with the experimental results. The numerical calculation method and validation examples have theoretical reference significance for the study of bio-hydrodynamics.

bio-hydrodynamics  /  caudal fin  /  pectoral fin  /  bionic fish  /  self-propelled swimming
Yi-kun FENG, Yu-min SU, Xiao-jun XU, Huan-xing LIU, Zhao-li WANG. Numerical simulation method and verification of bio-hydrodynamics based on CFD[J]. Journal of Ship Mechanics, 2024 , 28 (2) : 204 -219 . DOI: 10.3969/j.issn.1007-7294.2024.02.004
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Article Info
doi: 10.3969/j.issn.1007-7294.2024.02.004
  • Receive Date：2023-08-06
  • Online Date：2026-03-21
  • Published：2024-02-20
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  • Received：2023-08-06
Funding
Affiliations
    1.College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China
    2.Science and Technology on Underwater Vehicle Laboratory, Harbin Engineering University, Harbin 150001, China
    3.Beijing Institute of Specialized Machinery, Beijing 100143, China
    4.Beijing Institute of Control Engineering, Beijing 100094, 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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