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Propeller cavitation and induced pressure fluctuation in non-uniform wake
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Zhe-hao YE1, Yi-jing HU1, Rui WU2, Heng LIU2, Qin WU1, 3
Journal of Ship Mechanics | 2024, 28(10) : 1486 - 1495
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Journal of Ship Mechanics | 2024, 28(10): 1486-1495
• Hydrodynamics •
Propeller cavitation and induced pressure fluctuation in non-uniform wake
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Zhe-hao YE1, Yi-jing HU1, Rui WU2, Heng LIU2, Qin WU1, 3
Affiliations
  • 1.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
  • 2.State Key Laboratory of Shipping Technology and Safety, Key Laboratory of Marine Technology Ministry of Communications, Shanghai Ship and Shipping Research Institute, Shanghai 200135, China
  • 3.Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China
Published: 2024-10-20 doi: 10.3969/j.issn.1007-7294.2024.10.003
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In order to study the propeller cavitation and induced pressure fluctuation in non-uniform wake, a multi-field synchronous measurement system was used to carry out tests in a cavitation tunnel for a highly skewed propeller (HSP) and explore the influence of advance coefficient and cavitation number on the propeller cavitation performance and fluctuating pressure characteristics. The results show that the propeller cavitation appears in the test mainly in three types: back cavitation, face cavitation and tip vortex cavitation. Low-frequency pressure fluctuation is highly correlated to the cavity volume oscillation. Under non-cavitation condition, the first blade passing frequency is the main component of pressure fluctuation while the amplitude of higher blade passing frequency component can be ignored by comparing the contributions of each blade passing frequency component of the whole pressure fluctuation. Under cavitation condition, the unsteady cavitation has a great impact on the pressure fluctuation. The higher blade passing frequency components can be obviously observed, and the amplitude of main frequency pressure fluctuation increases significantly.The variation of pressure will become more observable with the increase of intensity of cavitation evolution process. The higher order blade frequency component of pulsating pressure increases obviously when tip vortex cavitation is present.

cavitation  /  propeller  /  fluctuating pressure  /  non-uniform wake
Zhe-hao YE, Yi-jing HU, Rui WU, Heng LIU, Qin WU. Propeller cavitation and induced pressure fluctuation in non-uniform wake[J]. Journal of Ship Mechanics, 2024 , 28 (10) : 1486 -1495 . DOI: 10.3969/j.issn.1007-7294.2024.10.003
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Article Info
doi: 10.3969/j.issn.1007-7294.2024.10.003
  • Receive Date：2024-04-21
  • Online Date：2026-03-26
  • Published：2024-10-20
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  • Received：2024-04-21
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Affiliations
    1.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
    2.State Key Laboratory of Shipping Technology and Safety, Key Laboratory of Marine Technology Ministry of Communications, Shanghai Ship and Shipping Research Institute, Shanghai 200135, China
    3.Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, 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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