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Investigation on the dynamic stability of an underwater glider using CFD simulation

Javaid, M.Y. and Ovinis, M. and Hashim, F.B.M. and Maimun, A. and Ali, S.S.A. and Ahmed, S.A. (2017) Investigation on the dynamic stability of an underwater glider using CFD simulation. USYS 2016 - 2016 IEEE 6th International Conference on Underwater System Technology: Theory and Applications . pp. 230-235.

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Abstract

Dynamic stability is an important consideration for an underwater glider because its slow motion makes it susceptible to underwater currents. This is compounded by its weak propulsion system whereby it self-propels by shifting its net buoyancy either positive or negative during forward motion. In this paper, steady state Computational Fluid Dynamic (CFD) simulation was used to evaluate the dynamic stability of a low-speed underwater glider. Fluid domains were generated for different flow velocities and angles of attack, for both rectilinear and rotary motions. For rectilinear motion, a straight line resistance test was replicated the tow tank resistance test. For rotary motion, a rotating arm setup was replicated and various angular velocities were numerically simulated. Hydrodynamic derivatives were obtained by extracting the slopes of the lift force and moment data points. The results showed that the dynamic stability of glider improved as the velocity and mass of the glider increases. © 2016 IEEE.

Item Type:Article
Impact Factor:cited By 0
ID Code:20102
Deposited By: Ahmad Suhairi
Deposited On:22 Apr 2018 14:41
Last Modified:22 Apr 2018 14:41

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