Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Study on the Development of the Maneuvering Mathematical Model Considering the Large Angle Motion of Submarine

  • Jae Hyuk Choi (Dept. of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University) ;
  • Sungwook Lee (Dept. of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University) ;
  • Jinhyeong Ahn (Maritime Technology Research Institute - 1st Directorate, Agency for Defense Development)
  • Received : 2023.04.14
  • Accepted : 2023.06.14
  • Published : 2023.06.30
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Abstract

Maneuverability is a crucial factor for the safety and success of submarine missions. This paper introduces a mathematical model that considers the large drift and angle of attack motions of submarines. Various computational fluid dynamics (CFD) simulations were performed to adapt Karasuno's fishery vessel maneuvering mathematical model to submarines. The study also presents the procedure for obtaining the physics-based hydrodynamic coefficients proposed by Karasuno through CFD calculations. Based on these coefficients, the reconstructed forces and moments were compared with those obtained from CFD and to the hydrodynamic derivatives expressed by a Taylor expansion. The study also discusses the mathematical maneuvering model that accounts for the large drift angles and angles of attack of submarines. The comparison results showed that the proposed maneuvering mathematical model based on modified Karasno's model could cover a large range of motions, including horizontal motion and vertical motions. In particular, the results show that the physics-based mathematical maneuvering model can represent the forces and moments acting on the submarine hull during large drift and angle of attack motions. The proposed mathematical model based on the Karasuno model could obtain more accurate results than the Taylor third-order approximation-based mathematical model in estimating the hydrodynamic forces acting on submarines during large drift and angle of attack motions.

Keywords

Acknowledgement

This study was supported by the Agency Defense Development by the Korean Government in 2021-2022 (UD210002DD).

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