Numerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under Ice Hole Constraint

• Published in: 水下无人系统学报 Vol. 32; no. 3; pp. 507 - 515
• Main Authors: Hao WANG, Zhengui HUANG, Zhihua CHEN, Zeqing GUO, Yihang WANG, Xiangyan LIU, Xiaodong NA
• Format: Journal Article
• Language: Chinese
• Published: Science Press (China) 01.06.2024
• Subjects: ice hole constraint; submarine launched; vehicle; water-exit cavity
• ISSN: 2096-3920
• DOI: 10.11993/j.issn.2096-3920.2024-0020

In high-latitude areas, the icing period is inevitable during winter. In view of the special mechanical environment of ice cracks faced during underwater launching in low-temperature ice zones, it is of great engineering value to expand the application of submarine-launched marine equipment in a low-temperature ice zone. The presence of floating ice inevitably enhances the nonlinearity of submarine-launched vehicles during high-speed water exit. A 6-degree-of-freedom(DOF) motion model of the vehicle was built by using the dynamic fluid interaction module(DFBI). Through comparative analysis of the underwater and cross-water motion stages of the submarine-launched vehicle under different ice hole sizes and shapes, the influence of ice holes on the evolution of the water-exit cavity was explored. The findings indicate that the ice hole has an obvious binding effect on the cavity during the process of water exit, and the binding effect increases with the decrease in ice hole size. For the same shape of the ice ho