해양환경안전학회지 (Journal of the Korean Society of Marine Environment & Safety)

  • 제23권7호
  • /
  • Pages.933-940
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  • 2017
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  • 1229-3431(pISSN)
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  • 2287-3341(eISSN)
해양환경안전학회 (The Korean Society of Marine Environment and safety)
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흘수 및 트림 변화를 고려한 선박 유체력 미계수 추정에 관한 연구

Estimating Hydrodynamic Coefficients with Various Trim and Draught Conditions

  • 김대원 (로스토크 대학교 대학원) ;
  • ;
  • Kim, Daewon (Graduate school, Faculty of Mechanical Engineering and Marine Technology, University of Rostock) ;
  • Benedict, Knud (ISSIMS Institute, Hochschule Wismar, University of Applied Sciences, Technology, Business and Design) ;
  • Paschen, Mathias (Faculty of Mechanical Engineering and Marine Technology, University of Rostock)
  • 투고 : 2017.10.24
  • 심사 : 2017.12.28
  • 발행 : 2017.12.31
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초록

선박의 다양한 흘수 및 트림 조건은 조종성능 추정을 위한 중요한 요소 중 하나이다. 본 논문에서는 세 종류의 흘수 및 트림 조건에서의 해상 시운전 자료를 바탕으로 하여 선체 유체력 미계수를 추정하였다. 시스템 식별법(system identification)의 하나인 수학적 최적화(mathematical optimization method) 및 Rheinmetall Defense사의 선박 운동 모델을 적용한 fast time 시뮬레이션 소프트웨어를 이용하여 시운전 항적데이터 및 관련 시뮬레이션 자료를 이용하여 선체 유체력 미계수를 추정하였다. 최적화 된 계수를 적용한 시뮬레이션 결과는 기존 계수 추정식을 사용한 시뮬레이션 결과와 대비하여 해상 시운전 계측 결과와 유사함을 보여주었으며 추가로 진행된 2차 검증 결과에서도 상대적으로 높은 유사함을 확인하였다.

Draught and trim conditions are highly related to the loading condition of a vessel and are important factors in predicting ship manoeuverability. This paper estimates hydrodynamic coefficients from sea trial measurements with three different trim and draught conditions. A mathematical optimization method for system identification was applied to estimate the forces and moment acting on the hull. Also, fast time simulation software based on the Rheinmetall Defense model was applied to the whole estimation process, and a 4,500 Twenty-foot Equivalent Unit (TEU) class container carrier was chosen to collect sets of measurement data. Simulation results using both optimized coefficients and newly-calculated coefficients for validation agreed well with benchmark data. The results show mathematical optimization using sea measurement data enables hydrodynamic coefficients to be estimated more simply.

키워드

참고문헌

  1. Clarke, D., P. Gedling and G. Hine(1983), The Application of Manoeuvring Criteria in Hull Design Using Linear Theory, Transactions of the RINA, London, pp. 45-68.
  2. Im, N., S. Kweon and S. Kim(2005), The Study on the Effect of Loading Condition on Ship Manoeuvrability, Journal of the Society of Naval Architects of Korea, Vol. 42, No. 2, pp. 105-112. https://doi.org/10.3744/SNAK.2005.42.2.105
  3. ITTC(2008), The Manoeuvring Committee Final Report and Recommendations to the 25th ITTC, Proceedings of 25th ITTC, Vol. 1, pp. 145-152.
  4. Kijima, K., T. Katsuno, Y. Nakiri, Y. Furukawa(1990), On the Manoeuvring Performance of a Ship with the Parameter of Loading condition, Journal of the Society of Naval Architects of Japan, Vol. 1990, No. 168, pp. 141-148. https://doi.org/10.2534/jjasnaoe1968.1990.168_141
  5. Kim, D. W., M. Paschen and K. Benedict(2016), A Study on Hydrodynamic Coefficients Estimation of Modelling Ship using System Identification Method, Journal of the Korean Society of Marine Engineering, Vol. 40, No. 10, pp. 935-941. https://doi.org/10.5916/jkosme.2016.40.10.935
  6. Kim, D. W., K. Benedict and M. Paschen(2017), Estimation of Hydrodynamic Coefficients from Sea Trials Using a System Identification Method, Journal of the Korean Society of Marine Environment & Safety, Vol. 23, No. 3, pp. 258-265. https://doi.org/10.7837/kosomes.2017.23.3.258
  7. Kirchhoff, M.(2013), Simulation to Optimize Simulator Ship Models and Manoeuvres (SIMOPT), Software Manual, ISSIMS GmbH, pp. 3-4, Rostock.
  8. Nocecdal, J. and S. J. Wright(2006), Numerical Optimization - second edition, Springer.
  9. Norrbin, N. H.(1971), Theory and Observations on the Use of a Mathematical Model for Ship Manoeuvring in Deep and Confined Waters, SSPA Publication, No. 68, Gothenburg.
  10. Oltmann, P.(2003), Identification of Hydrodynamic Damping Derivatives - a Progmatic Approach, International Conference on Marine Simulation and Ship Manoeuvrability, Vol. 3, Paper 3, pp. 1-9.
  11. Rheinmetall Defence Electronic(2008), Advanced Nautical Simulator 5000 (ANS 5000) - Software Requirement Specification (SRS), Company Publication, Bremen.
  12. Yoon, S., D. Kim and S. Kim(2016), A Study on the Maneuvering Hydrodynamic Derivatives Estimation Applied the Stern Shape of a Vessel, Journal of the Society of Naval Architecture of Korea, Vol. 53, No. 1, pp. 76-83. https://doi.org/10.3744/SNAK.2016.53.1.76