Abstract:
Objectives Emergency surfacing is an important aspect of submarine vitality which is closely related to submarine safety. In order to master the motion laws of submarine during emergency surfacing performance,
Methods this paper establishes a structure model of submarine with non-watertight zone and drain-holes in the superstructure, solves the RANS equation to obtain the hydrodynamic force through discretizing the fluid field with an overset grid method, and combines solid motion equations to obtain the submarine's attitude.
Results The simulation successfully calculates variables in terms of roll angle, pitch angle and oscillation period, and predicts the attitude of the submarine when it is underwater, out of water and oscillating on the surface.
Conclusions The results of this paper can be applied to the simulation of submarine emergency surfacing operation, thereby providing technical support for the overall design of submarines.
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