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Thrust loss mechanism and directionality of omnidirectional waterjet propeller
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Ji-tao QIU1, 2, Ren-zhi WANG2, Peng YAN1, 2, Rui-zhi ZHANG2, Jia-jian ZHOU1, 2
Journal of Ship Mechanics | 2025, 29(9) : 1373 - 1382
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Journal of Ship Mechanics | 2025, 29(9): 1373-1382
• Hydrodynamics •
Thrust loss mechanism and directionality of omnidirectional waterjet propeller
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Ji-tao QIU1, 2, Ren-zhi WANG2, Peng YAN1, 2, Rui-zhi ZHANG2, Jia-jian ZHOU1, 2
Affiliations
  • 1.Science and Technology of Water Jet Propulsion Laboratory, Shanghai 200011, China
  • 2.Marine Design & Research Institute of China, Shanghai 200011, China
Published: 2025-09-20 doi: 10.3969/j.issn.1007-7294.2025.09.004
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The omnidirectional waterjet propeller, as a lateral thruster or dynamic positioning device, has attracted more and more attentions. Its hydrodynamic characteristics are a key factor in meeting the application requirements. However, there are limited related studies. The numerical simulation of hydrodynamic performance of the omnidirectional waterjet propeller was carried out in this paper. Based on the STAR-CCM+ software, the steady RANS method was applied to investigate the hydrodynamic performance of an omnidirectional waterjet propeller under two conditions, i. e. static water and flowing water. The results show that the hydrodynamic performance of both thrust magnitude and directionality is greatly affected by the magnitude and direction of incoming flow, and the influence is greater when the rotational speed is lower. The research in this paper reveals the thrust loss mechanism of the omnidirectional waterjet propeller. Its hydrodynamic performance should be evaluated according to its working conditions, and the low rotational speed operation should be avoided to ensure that hydrodynamic performance requirements are met.

omnidirectional waterjet propeller  /  hydrodynamic performance  /  RANS  /  thrust loss  /  thrust directionality
Ji-tao QIU, Ren-zhi WANG, Peng YAN, Rui-zhi ZHANG, Jia-jian ZHOU. Thrust loss mechanism and directionality of omnidirectional waterjet propeller[J]. Journal of Ship Mechanics, 2025 , 29 (9) : 1373 -1382 . DOI: 10.3969/j.issn.1007-7294.2025.09.004
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Article Info
doi: 10.3969/j.issn.1007-7294.2025.09.004
  • Receive Date：2025-03-25
  • Online Date：2026-03-26
  • Published：2025-09-20
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  • Received：2025-03-25
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Affiliations
    1.Science and Technology of Water Jet Propulsion Laboratory, Shanghai 200011, China
    2.Marine Design & Research Institute of China, Shanghai 200011, China
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表12种不同金属材料的力学参数
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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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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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