Study on hydrodynamic characteristics of the disk-shaped autonomous underwater helicopter over sea-beds

被引：11

作者：

Guo, Jin ^{[1
,2
]}

Lin, Yuan ^{[1
]}

Lin, Peiwen ^{[1
]}

Li, Haonan ^{[1
,2
]}

Huang, Haocai ^{[1
,2
,3
]}

Chen, Ying ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Inst Ocean Engn & Technol, Ocean Coll, Zhoushan 316021, Peoples R China

[2] Zhejiang Univ, Hainan Inst, Sanya 572025, Peoples R China

[3] Zhejiang Univ, Key Lab Ocean Observat Imaging Testbed Zhejiang Pr, Zhoushan 316021, Peoples R China

来源：

OCEAN ENGINEERING | 2022年 / 266卷

基金：

中国国家自然科学基金;

关键词：

Autonomous underwater vehicle (AUV); Computational fluid dynamics (CFD); Hydrodynamic force; Complex terrain; FLUID-DYNAMICS; VEHICLE; FLOW;

D O I：

10.1016/j.oceaneng.2022.113132

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

In this study, the hydrodynamic characteristics of the Autonomous Underwater Helicopter surging near the seabed are studied by numerical simulation and experiment. The influence from the cruising velocity, altitudes as well as the inclination angle of the seabed are considered. For the condition of flat seabed, the simulation shows that the seafloor mainly affects the flow field at the bottom and rear part of the AUH, which changes the pressure resistance, and consequently affects the total resistance. In addition, bulges at the top and bottom of the AUH are the cause of the abnormal lift force. For the condition of sloping seabed, at the same surging velocity and cruising height, the resistance of AUH is more than twice of the one over flat seabed, and the irregular eddy current intensity at the tail of AUH increases with the increasing slope angle. The hydrodynamic performance from simulation agrees with the findings from the water-channel experiment with the adoption of a scaled model of the vessel. It is further discovered that hydrodynamic characteristics of AUH change more obviously with the angle of attack when it is more close to the seabed. Therefore, the hydrodynamic performance of AUH near the sloping seabed can be improved by adjusting the angle of attack.

引用

页数：13