Effect of wing form on the hydrodynamic characteristics and dynamic stability of an underwater glider

International Journal of Naval Architecture and Ocean Engineering

Mark Ovinis¹  Fakhruldin B.M. Hashim¹  Barkat Ullah¹  Muhammad Yasar Javaid¹  Yasser M. Ahmed²  Adi Maimun² 

[1] Department of Mechanical Engineering, Universiti Teknologi PETRONAS, Perak, Malaysia;Marine Technology Centre, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia;

关键词: Underwater glider;    Hydrodynamic characteristics;    Dynamic stability;   

DOI  :  10.1016/j.ijnaoe.2016.09.010

来源: DOAJ

【 摘 要 】

We are developing a prototype underwater glider for subsea payload delivery. The idea is to use a glider to deliver payloads for subsea installations. In this type of application, the hydrodynamic forces and dynamic stability of the glider is of particular importance, as it has implications on the glider's endurance and operation. In this work, the effect of two different wing forms, rectangular and tapered, on the hydrodynamic characteristics and dynamic stability of the glider were investigated, to determine the optimal wing form. To determine the hydrodynamic characteristics, tow tank resistance tests were carried out using a model fitted alternately with a rectangular wing and tapered wing. Steady-state CFD analysis was conducted using the hydrodynamic coefficients obtained from the tests, to obtain the lift, drag and hydrodynamic derivatives at different angular velocities. The results show that the rectangular wing provides larger lift forces but with a reduced stability envelope. Conversely, the tapered wing exhibits lower lift force but improved dynamic stability.

【 授权许可】

Unknown