Home Journals Articles Updates About
CN
image
收藏切换
Numerical study on microbubble drag reduction of low-speed ships
收藏切换
PDF
Xiao-jie ZHAO1, Zhi ZONG2, 3, Jia-xia WANG1, Zhi-chao HONG1, 4, Jun-ming HU1
Journal of Ship Mechanics | 2024, 28(3) : 368 - 378
Less
收藏切换
Journal of Ship Mechanics | 2024, 28(3): 368-378
• Hydrodynamics •
Numerical study on microbubble drag reduction of low-speed ships
Full
Xiao-jie ZHAO1, Zhi ZONG2, 3, Jia-xia WANG1, Zhi-chao HONG1, 4, Jun-ming HU1
Affiliations
  • 1.School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
  • 2.School of Shipbuilding Engineering, Dalian University of Technology, Dalian 116024, China
  • 3.State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian 116024, China
  • 4.Jiangsu Marine Technology Innovation Center, Nantong 226100, China
Published: 2024-03-20 doi: 10.3969/j.issn.1007-7294.2024.03.005
Outline
收藏切换

In order to investigate the microbubble drag reduction (MBDR) of ships, numerical studies of MBDR on a low-speed bulk carrier model were conducted based on the two-phase Euler model in OpenFOAM. The governing equations were established for the gas and liquid phases, respectively, considering five kinds of interfacial forces and bubble coalescence and breakup. The modified k-ε turbulence model considering the effects of bubbles was also used, and the superimposed model was adopted to ignore the influence of free surface. The effects of air flow rate, bubble size, ship speed and draft on MBDR of the ship were investigated while the distributions of air volume fraction, turbulent viscosity and bubble size around the ship were analyzed. The numerical results show that: micro bubbles can simultaneously reduce the frictional drag, viscous pressure drag and total drag of the ship; air flow rate can directly influence the drag reduction and more air flow rate can lead to more drag reduction; smaller micro bubbles can lead to higher average volume fraction, more uniform gas distribution and smaller turbulent viscosity, resulting in drag reduction more effectively;bubble coalescence will occur along the direction of the flow and the coalescence effects are more intense for smaller bubbles; higher ship speed and lower draft are more conducive to drag reduction.

two-phase Euler model  /  micro bubble drag reduction  /  ship  /  frictional resistance  /  numerical simulation
Xiao-jie ZHAO, Zhi ZONG, Jia-xia WANG, Zhi-chao HONG, Jun-ming HU. Numerical study on microbubble drag reduction of low-speed ships[J]. Journal of Ship Mechanics, 2024 , 28 (3) : 368 -378 . DOI: 10.3969/j.issn.1007-7294.2024.03.005
Appendix
Less
Year 2024 volume 28 Issue 3
PDF
107
51
Cite this Article
BibTeX
Article Info
doi: 10.3969/j.issn.1007-7294.2024.03.005
  • Receive Date：2023-09-23
  • Online Date：2026-03-21
  • Published：2024-03-20
Article Data
Affiliations
History
  • Received：2023-09-23
Funding
Affiliations
    1.School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
    2.School of Shipbuilding Engineering, Dalian University of Technology, Dalian 116024, China
    3.State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian 116024, China
    4.Jiangsu Marine Technology Innovation Center, Nantong 226100, China
References
Share
https://castjournals.cast.org.cn/joweb/cblx/EN/10.3969/j.issn.1007-7294.2024.03.005
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