The 12th International Conference on Hydrodynamics
18 – 23 september 2016, Egmond aan Zee, The Netherlands
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HYDRODYNAMIC PERFORMANCES ON THE EFFICIENCY GLIDING OF THE UNDERWATER GLIDER


Go-down ichd2016 Tracking Number 38

Presentation:
Session: Computational Fluid Dynamics I
Room: Room 2
Session start: 10:30 Mon 19 Sep 2016

Yongcheng Li   liyongcheng702@163.com
Affifliation:

Zheng Ma   MaZheng8888@sina.com
Affifliation:


Topics: - Computational fluid dynamics

Abstract:

ABSTRACT The underwater glider is a new kind of autonomous underwater vehicle.It has many advantages such as a long endurance, and a long operational range with its unique device.The research of the autonomous underwater gliders ,which represents the developing direction of the AUV ,is now at the forefront of the international marine technology.In order to fully improve the gliding efficiency of AUG,we have adopted the new conceptual design of high efficiency gliding.In this article, the turtle hydrofoil propulsion method was adopted to the traditional autonomous underwater glider (AUG) for improving its propulsion efficiency and maneuverability. Using CFD methods, a set of numerical simulations considering different torsion angles along with different installation positions of hydrofoil were carried out, and the gliding efficiency of AUG was evaluated, accordingly. The simulation results show that, upon suitable torsion angles, despite greater drag, the horizontal gliding speed as well as the gliding efficiency of AUG has been improved considerably. Besides, the forward movement of the hydrofoil along the body axis may reduce the energy consumption of AUG. The obtained results could provide theoretical guidance for future AUG design. Keywords:Autonomous Underwater Glider; Turtle hydrofoil;Efficiency gliding;CFD