LI Rijie, CHEN Qinglong, CHANG Wentian. CFD prediction of submarine motion during emergency surfacing[J]. Chinese Journal of Ship Research, 2018, 13(S1): 36-42. DOI: 10.19693/j.issn.1673-3185.01070
Citation: LI Rijie, CHEN Qinglong, CHANG Wentian. CFD prediction of submarine motion during emergency surfacing[J]. Chinese Journal of Ship Research, 2018, 13(S1): 36-42. DOI: 10.19693/j.issn.1673-3185.01070

CFD prediction of submarine motion during emergency surfacing

  •   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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