Numerical simulation of the hydrodynamic characteristics of unmanned underwater vehicles near ice surface. (1st June 2022)

• Record Type: Journal Article
• Authors: Luo, Wanzhen; Jiang, Dapeng; Wu, Tiecheng; Liu, Moyu; Li, Yulong
• Is Part Of: Ocean engineering. Volume 253(2022)
• Publication Date: 2022-06-01
• Subjects: Polar region -- Unmanned underwater vehicle -- Near ice surface -- Hydrodynamic performance -- Numerical simulation; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2022.111304
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: In this study, the computational fluid dynamics (CFD) method is used to calculate the hydrodynamic performance of UUVs at different velocities and depths near the free surface, near the ice surface, and at an infinite depth. The resistance, lift, velocity field, vorticity field and pressure around the UUV under different depths and velocities are analyzed respectively. The results show that the existence of ice surface affects the resistance, lift, velocity field, vorticity field and pressure compared with free surface and infinite diving depth, which produces impact on the navigation of UUV, and the influence is related to diving depth and speed. The research provides a guidance for the safe navigation of UUV near the polar ice surface. Highlights: UUV plays an important role in polar exploration, and the hydrodynamic performance of polar UUV lacks detailed research. The hydrodynamic performance of UUVs at different velocities and depths near the free surface and ice surface is studied. The ice surface affected the resistance, lift of the UUV and flow field distribution around the hull. The diving depth and sailing speed are the main factors that affect the hydrodynamic performance of the UUV.