Abstract: To address the endurance challenge faced by autonomous underwater vehicles (AUVs) in deep-sea and offshore operations, this paper proposes an offshore mobile energy platform that uses a small waterplane area twin hull (SWATH) as its platform and integrates dual vertical-axis wind turbines (VAWTs). To evaluate the resistance characteristics and design the propulsion system of the platform, the calm-water resistance of the SWATH and the aerodynamic resistance of the VAWT are calculated respectively using computational fluid dynamics (CFD). On this basis, a propeller is designed and its open water performance is predicted. The results show that the designed propeller achieves a propulsion efficiency of over 60% at medium and high advance speeds, meeting the propulsion requirements under medium- and high-speed navigation conditions. At low advance speeds, the propeller can also provide sufficient thrust to meet the propulsion requirement of the platform at a maximum speed of 4 kn. This study performs resistance calculations and propeller design for the platform, confirming its hydrodynamic feasibility as AUV cluster charging equipment and providing data support and design references for the development of deep-sea and offshore energy supply equipment.

Key words: offshore mobile energy platform, small waterplane area twin hull (SWATH), vertical axis wind turbine (VAWT), computational fluid dynamics (CFD), resistance, propeller, open water performance

摘要： 为解决自主水下航行器（autonomous under water vehicle,AUV）在深远海作业面临的续航难题,该文提出一种以小水线面双体船（small waterplone area twin,SWATH）为平台、集成双垂直轴风机（vertical axis wind turbine,VAWT）的海上可移动能源装置。为评估该装置阻力特性并设计推进系统,文章采用计算流体力学仿真技术,分别对SWATH静水阻力与VAWT气动阻力进行计算;在此基础上设计螺旋桨,并对敞水性能进行预报。研究结果表明：设计螺旋桨在中高进速时,推进效率达到60%以上,满足在中高速航行状态下的推进要求;而在低进速时也可提供充足推力,满足装置最大航速4 kn的推进需求。该文通过对该装置进行阻力计算及螺旋桨设计,验证了其作为AUV集群充电装备的水动力可行性,可为深远海能源补给装备研发提供数据支撑与设计参考。

关键词: 海上可移动能源装置, 小水线面双体船, 垂直轴风机, 计算流体力学, 阻力, 螺旋桨, 敞水性能