Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Numerical Analysis of Cavity Characteristics and Thrust for Supercavitating Underwater Vehicle

초공동 수중운동체 주위 공동 특성과 추력 전산 해석

  • Kim, Dong-Hyun (School of Mechanical Engineering, Pusan National University) ;
  • Park, Warn-Gyu (School of Mechanical Engineering, Pusan National University)
  • Received : 2016.12.13
  • Accepted : 2017.02.10
  • Published : 2017.02.28
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Abstract

Cavitation is used in various fields. This study examined the drag reduction of an underwater vehicle using cavitation. In this study, the natural partial cavitation analysis results were verified using CFD code with the Navier-Stokes equation based on a mixture model. The momentum and continuity equations in the mixture phase were separately solved in the liquid and vapor phases. The solver employs an implicit preconditioning algorithm in curvilinear coordinates. The results of a computational analysis showed good agreement with the experiment. A computational analysis was also performed on the supercavity. The study investigated the cavity characteristics and drag of an underwater vehicle and studied the speed required to achieve a supercavity. Finally, a 1DOF analysis was carried out to investigate the thrust system for a supercavity. As a result, one of the methods for determining a suitable thrust system for a supercavitating underwater vehicle was presented.

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References

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