Numerical investigation of a wave glider in head seas

OCEAN ENGINEERING

卷:164

Article

Yang, Fuming¹  Shi, Weichao²  Zhou, Xu¹  Guo, Bin¹  Wang, Dazheng¹ 

[1] Harbin Inst Technol, Sch Naval Architecture & Ocean Engn, 2 Western Wenhua Rd, Weihai 264209, Shandong, Peoples R China

[2] Univ Strathclyde, Dept Naval Architecture Ocean & Marine Engn, Glasgow, Lanark, Scotland

关键词: Wave glider;    Passive eccentric rotation;    Surge force;   

DOI  :  10.1016/j.oceaneng.2018.06.017

来源: Elsevier

【 摘 要 】

A wave glider comprises a surface boat, which harvests energy from wave and solar power, a submerged glider containing six pairs of tandem hydrofoils and a tether connecting them in between. This paper presents a numerical simulation to predict the wave glider dynamic performance in head seas with the aid of computational fluid dynamic (CFD) method. The simulation involves two commercial CFD software packages, FINE/Marine and STAR-CCM +. Firstly, unsteady Reynolds Averaged Navier-Stokes (URANS) simulation was built in FINE/Marine with volume of fluid (VOF) model to simulate the flow around the surface boat and the tandem hydrofoils as a system, followed by the high-fidelity simulation of the passive eccentric rotation of the underwater tandem hydrofoils in STAR-CCM + using overset mesh. By taking the advantages of both softwares, manual iteration was conducted to achieve a converged result. Consequently, by analyzing these results, the surge force acting on the surface boat and the passive eccentric rotation law of the hydrofoils have been achieved which are proved to be the main factors affecting the propulsion efficiency of the wave glider.

【 授权许可】

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