Journal
DEFENCE TECHNOLOGY
Volume 10, Issue 1, Pages 76-81Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.dt.2014.01.007
Keywords
Computational fluid dynamics; UUV; Hydrodynamics; Structured grid
Categories
Funding
- National Natural Science Foundation of China [11302176]
- Doctoral Program of Higher Education of China [20126102120021]
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The accurate research on the hydrodynamics of unmanned underwater vehicle (UUV), which moves close to the sea bottom, has a great significance for its maneuverability. The structured grid of the computational models with different distances to the sea bottom and attack angles is generated by Ansys ICEM, and the flow field near the sea bottom is simulated using CFX. The characteristics of the drag, lift, pitching moment influenced by the distance to sea bottom and the attack angle are studied. The result shows that the drag coefficient increases with the decrease of distance, while it increases with the increase of attack angle. There exists attraction force when UUV moves close to the sea bottom, and the attraction force increases with the decrease in distance. The lift coefficient increases with the increase in attack angle. The absolute value of the pitching moment coefficient increases with the decrease in distance and the increase in attack angle. Copyright (C) 2014, China Ordnance Society. Production and hosting by Elsevier B.V. All rights reserved.
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