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Study of Active Cavitation in the Flow Field Around the Underwater Vehicle
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Lei LU1, Jing LI1, Yuqiang ZHANG2
Missiles and Space Vehicles | 2025, 48(3) : 54 - 61
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Missiles and Space Vehicles | 2025, 48(3): 54-61
• Launch Support •
Study of Active Cavitation in the Flow Field Around the Underwater Vehicle
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Lei LU1, Jing LI1, Yuqiang ZHANG2
Affiliations
  • 1. Naval University of Engineering, Wuhan, 430033
  • 2. Unit 91049 of PLA, Qingdao, 266100
Published: 2025-06-25 doi: 10.7654/j.issn.2097-1974.20250308
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Movement of vehicles in the gas and liquid flow field is widely existed in the research equipment. In order to investigate the typical motion process of underwater vehicles, unsteady numerical calculation method is used to study the flow field and the active cavitation process. The calculation results show that the oscillating flow field of high or low pressure is formed in the rear edge of the vehicle in the background flow field, meanwhile the forward movement of pressure along the boundary layers significantly affects the wall pressure distribution. The active cavitations divide the flow field into the main influence zone, secondary influence zone, no influence zone and wake zone. The pressure in the main influence zone remains almost unchanged, whereas increasing in the secondary influence zone in a stepped manner. The active cavitation can eliminate the wake influence to a certain extent, making the upper and lower wall pressure changes consistent, weakening the asymmetric force of the flow field on the vehicle body and reducing the duration of negative pressure zone. Last but not least, it can also weaken the effect of water boundary layer and reduce the resistance of the whole vehicle to the lowest when developing from the shoulder to the end.

vehicle  /  active cavitation  /  numerical calculation  /  flow structure  /  wall pressure
Lei LU, Jing LI, Yuqiang ZHANG. Study of Active Cavitation in the Flow Field Around the Underwater Vehicle[J]. Missiles and Space Vehicles, 2025 , 48 (3) : 54 -61 . DOI: 10.7654/j.issn.2097-1974.20250308
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Article Info
doi: 10.7654/j.issn.2097-1974.20250308
  • Receive Date：2024-12-10
  • Online Date：2025-10-27
  • Published：2025-06-25
Article Data
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History
  • Received：2024-12-10
  • Revised：2025-03-07
Affiliations
    1. Naval University of Engineering, Wuhan, 430033
    2. Unit 91049 of PLA, Qingdao, 266100
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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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