Hydrodynamic Characteristics Analysis of UUV Parking on Seabed

doi:10.3969/j.issn.1000-1093.2012.08.007

Abstract

Abstract: In order to obtain the hydrodynamic characteristics of the unmanned underwater vehicle (UUV) parking on the seabed and the effect of vertical thrusters on it, two kinds of UUV, with and without vertical thrusters respectively, were modeled and meshed using the software ANSYS ICEM in different distances from the seabed and different seabed oblique angles, and the flow fields around these UUVs were simulated by using CFX. From the simulation, the lateral forces and lifts of these two UUVs under different conditions were obtained and the curves of lateral forces and lifts changing with distance from the seabed, oblique angle and water velocity were analyzed. Finally, the effect of vertical thrusters on the hydrodynamic characteristics was analyzed according to the simulation results. The results reveal that the effect of the distance from the seabed on the lateral forces is minor while that on lifts is great; both of the lateral forces and lifts increase rapidly with the increase of water velocity; the lateral forces decease slowly with the increase of the absolute value of seabed oblique angle while lifts increase rapidly; the lateral forces of UUV with vertical thrusters are 5%~15% larger than that if UUV without vertical thrusters while lifts are several times larger.

Key words: fluid mechanics, unmanned underwater vehicle, parking on seabed, hydrodynamic characteristic, vertical thruster, structured grid

CLC Number:

O352
TP24

ZHU Xin-yao， SONG Bao-wei， WANG Peng. Hydrodynamic Characteristics Analysis of UUV Parking on Seabed[J]. Acta Armamentarii, 2012, 33(8): 934-943.

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