Home Journals Articles Updates About
CN
image
收藏切换
Hydraulic characteristics and flow field evolution of propulsion pump during rapid start-up
收藏切换
PDF
Fu-yi ZHANG1, peng YANG1, Feng-chuan ZHENG2, Xiao-yang ZHAO2, Ying LIU2
Journal of Ship Mechanics | 2024, 28(1) : 10 - 19
Less
收藏切换
Journal of Ship Mechanics | 2024, 28(1): 10-19
• Hydrodynamics •
Hydraulic characteristics and flow field evolution of propulsion pump during rapid start-up
Full
Fu-yi ZHANG1, peng YANG1, Feng-chuan ZHENG2, Xiao-yang ZHAO2, Ying LIU2
Affiliations
  • 1.Shanghai Marine Diesel Engine Research Institute, Shanghai 200090, China
  • 2.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Published: 2024-01-20 doi: 10.3969/j.issn.1007-7294.2024.01.002
Outline
收藏切换

In order to improve the velocity of torpedoes, the transient calculation model of a torpedo launching propulsion pump during rapid start-up process was established based on the Reynolds average N-S equation and SST k-ω turbulence model in present paper. The hydraulic characteristics and the flow field evolution of the propulsion pump under three start-up time conditions were studied by numerical method. The results show that the flow rate and the thrust continue to increase with time. The head, the axial force, the axial moment and the power increase at first and then decrease. The efficiency firstly increases and then remains stable. The maximum values of the head, the axial force, the axial moment and the power appear at the end of acceleration, and the maximum values decrease with the increase of start-up time. At the beginning of start-up, there are serious inflow impact, flow separation and vortex structure in the impeller area, and the flow field tends to be stable gradually with time. Start-up time has a significant effect on the flow field evolution of the propulsion pump. The smaller the start-up time is, the faster the flow field reaches stable state. In order to ensure that the propulsion pump has no cavity and the internal flow field runs to stable state in a relatively short time during star-up process, it is recommended to start propulsion pump by 0.2 seconds start-up time.

propulsion pump  /  torpedo  /  rapid start-up  /  hydraulic characteristics  /  flow field evolution
Fu-yi ZHANG, peng YANG, Feng-chuan ZHENG, Xiao-yang ZHAO, Ying LIU. Hydraulic characteristics and flow field evolution of propulsion pump during rapid start-up[J]. Journal of Ship Mechanics, 2024 , 28 (1) : 10 -19 . DOI: 10.3969/j.issn.1007-7294.2024.01.002
Appendix
Less
Year 2024 volume 28 Issue 1
PDF
55
25
Cite this Article
BibTeX
Article Info
doi: 10.3969/j.issn.1007-7294.2024.01.002
  • Receive Date：2023-07-18
  • Online Date：2026-03-21
  • Published：2024-01-20
Article Data
Affiliations
History
  • Received：2023-07-18
Funding
Affiliations
    1.Shanghai Marine Diesel Engine Research Institute, Shanghai 200090, China
    2.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
References
Share
https://castjournals.cast.org.cn/joweb/cblx/EN/10.3969/j.issn.1007-7294.2024.01.002
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
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
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House