Hydrodynamic Analysis and Drag-Reduction Design of an Unmanned Underwater Vehicle Based on Computational Fluid Dynamics

Author:

Li Xuecheng1,Zhang Desheng23ORCID,Zhao Ming23,Wang Xin23ORCID,Shen Yu23

Affiliation:

1. China Offshore Fugro Geosolutions (Shenzhen) Co., Ltd., Shenzhen 518065, China

2. School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China

3. Guangdong Provincial Key Laboratory of Intelligent Morphing Mechanisms and Adaptive Robotics, Shenzhen 518055, China

Abstract

In order to establish a proper geometry of an Unmanned Underwater Vehicle (UUV) for stable motion control and energy usage reduction, this paper analyzes the hydrodynamic performance of a complex shape underwater vehicle and develops a systematic Computational Fluid Dynamics (CFD) simulation method to solve the hydrodynamic parameters of the system. Based on the simulation method and their results, the streamlines and pressure distributions of the water flow around the underwater vehicle are analyzed, and the geometric model design is improved based on the drag characteristics. Also, a comparison scheme is designed to evaluate the vehicle model before and after the geometry improvement. Simulation result shows that the design schemes brings 18% drag reductions in surge direction and 32% in heave direction. Moreover, by establishing the physical and mathematical models of the UUV on a physical simulation platform, a complete model of the underwater vehicle is constructed, laying the foundation for further simulations and experiments.

Funder

Shenzhen Science and Technology Program

Publisher

MDPI AG

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