Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Added Mass of Submerged Bodies Obtained by Forced Oscillation Tests and Numerical Calculations of Potential Flow

수중운동체의 강제동요시험 및 포텐셜 계산에 의한 부가질량 추정

  • Kim, Dong Jin (Korea Research Institute of Ships and Ocean Engineering) ;
  • Lee, Gyeong Joong (Korea Research Institute of Ships and Ocean Engineering) ;
  • Kwon, Chang Seop (Korea Research Institute of Ships and Ocean Engineering) ;
  • Kim, Yeon Gyu (Korea Research Institute of Ships and Ocean Engineering) ;
  • Park, Jin-Yeong (Korea Research Institute of Ships and Ocean Engineering) ;
  • Jun, Bong-Huan (Korea Research Institute of Ships and Ocean Engineering)
  • 김동진 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 이경중 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 권창섭 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김연규 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박진영 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 전봉환 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2022.04.19
  • Accepted : 2022.06.30
  • Published : 2022.08.20
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Abstract

It is necessary to estimate manoeuvring characteristics of submerged bodies at the design stage in order to ensure the safe operations. In this study, added mass coefficients in the mathematical model of submerged bodies are estimated by captive model tests and numerical calculations. Two kinds of models, MARIN 'BB2'submarine model and AUV (Autonomous unmanned vehicle) model are utilized in the forced oscillation tests. Compared to BB2 submarine, AUV with cylindrical type hull form shows relatively small added masses in roll, pitch, and yaw directions. Next, numerical calculations based on potential theory are performed under the assumption that viscous effects on inertia forces are negligible. Added masses obtained by numerical calculations are in good agreements with forced oscillation test results. And if slow manoeuvres of submerged bodies are presumed, some of velocity coupled terms can be approximated by combinations of added mass coefficients.

Keywords

Acknowledgement

본 연구는 해양수산부 재원으로 선박해양플랜트연구소의 주요사업인 '수중운동체 운항성능 통합 추정 기술개발(3/5) (1525012981, PES4250)' 및 과학기술정보통신부의 재원으로 한국연구재단, 무인이동체원천기술개발사업단의 지원을 받아 무인이동체원천기술개발사업(2020M3C1C1A02086303, PNS4140)을 통해 수행되었습니다.