Effect of radial ventilation on drag reduction characteristics of underwater axisymmetric vehicle
文献类型：期刊论文
| 作者 | Sun, Sheng2; Dong, Guowei2; Bai, Tiechao1; Wang SZ(王士召)3; Yu, Pengyao2 |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2025-08-01 |
| 卷号 | 37期号:8页码:12 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0281306 |
| 通讯作者 | Yu, Pengyao(yupengyao@dlmu.edu.cn) |
| 英文摘要 | With the growing demand for underwater vehicles in complex aquatic environments, drag reduction technology plays an increasingly critical role in enhancing vehicle performance and energy efficiency. This paper employs numerical simulations to investigate the drag characteristics and drag reduction effects of an underwater vehicle under radial jetting conditions, analyzing the flow field variations and drag mechanisms at different speeds and ventilation rates. The study reveals that, under low-speed conditions, radial ventilation leads to an increase in drag; however, under moderate- to high-speed conditions, the friction reduction becomes apparent as ventilation intensity rises, with a maximum drag reduction rate of 45.5%. Analysis of the drag components shows that an increase in speed contributes to a reduction in pressure drag, while frictional drag is effectively reduced with the increase in both speed and ventilation rate. Flow field analysis indicates that the gas layer formed by radial jetting significantly reduces frictional drag by decreasing surface shear stress. Furthermore, the expansion of the gas layer, along with the gas-liquid mixture effect, reduces the high-shear stress regions, thereby enhancing the friction reduction. In conclusion, the drag reduction effect of radial jetting is mainly achieved through the optimization of the gas layer distribution, shear stress modulation, and regulation of gas pocket behavior, with a clear dependence on both speed and ventilation rate. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | FLAT-PLATE ; AIR CAVITY |
| 资助项目 | Ministry of Industry and Information Technology of the People's Republic of China10.13039/501100006579[CBZ03N23-03] ; Ministry of Industry and Information Technology of the People's Republic of China (MIIT)[3132023510] ; MOE Fundamental Research Funds for the Central Universities[SE202301] ; Shanghai Ship Engineering Key Laboratory Fund[2020ONRC001] ; China Association for Science and Technology Youth Talent Lift Project |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001556278600010 |
| 资助机构 | Ministry of Industry and Information Technology of the People's Republic of China10.13039/501100006579 ; Ministry of Industry and Information Technology of the People's Republic of China (MIIT) ; MOE Fundamental Research Funds for the Central Universities ; Shanghai Ship Engineering Key Laboratory Fund ; China Association for Science and Technology Youth Talent Lift Project |
| 其他责任者 | Yu, Pengyao |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/103695]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.China Ship Dev & Design Ctr, Wuhan 430064, Peoples R China; 2.Dalian Maritime Univ, Sch Naval Architecture & Ocean Engn, Dalian 116026, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Sheng,Dong, Guowei,Bai, Tiechao,et al. Effect of radial ventilation on drag reduction characteristics of underwater axisymmetric vehicle[J]. PHYSICS OF FLUIDS,2025,37(8):12. |
| APA | Sun, Sheng,Dong, Guowei,Bai, Tiechao,王士召,&Yu, Pengyao.(2025).Effect of radial ventilation on drag reduction characteristics of underwater axisymmetric vehicle.PHYSICS OF FLUIDS,37(8),12. |
| MLA | Sun, Sheng,et al."Effect of radial ventilation on drag reduction characteristics of underwater axisymmetric vehicle".PHYSICS OF FLUIDS 37.8(2025):12. |
入库方式： OAI收割
来源：力学研究所
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