Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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Research on Wave-Making Resistance Reduction Technology for Container Ships

컨테이너선의 조파저항 감소 기술에 대한 연구

  • Hee Jong Choi (Naval Architecture & Ocean Engineering, Chonnam National University)
  • 최희종 (전남대학교 조선해양공학과)
  • Received : 2024.01.10
  • Accepted : 2024.08.08
  • Published : 2024.08.31
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Abstract

This paper aimed to summarize research on technologies that could efficiently reduce wave-making resistance of container ships. Tto develop wave resistance reduction technology that could be applied to container ships and use it in real ship design, hull-form optimal design was performed by applying optimization algorithms, hull-form change algorithms, ship performance prediction algorithms, automation algorithms, and iterative optimal design techniques. A computer program was also developed. To properly set design variables known to be important elements in hull-form optimal design and to efficiently set lower and upper limits of design variables, a sensitivity analysis algorithm was developed and applied to hull-form optimal design. To predict the reliability and applicability of the developed computer program for real ships, hull-form optimal design was performed for a KRISO Container Ship (KCS), a container ship with various studies conducted worldwide. Hull-form optimal design was performed at Fn=0.26, the design speed of the KCS ship. Numerical analysis was performed on the hull-form of the target ship, the KCS ship, and the hull-form of the ship derived as a result of the hull-form optimal design to determine wave resistance, wave system, and wave height. The optimal ship's wave resistance was found to be reduced by 80.60% compared to the target ship. The displacement and wetted surface area were also found to be reduced by 1.54% and 1.21%, respectively.

본 논문에서는 컨테이너선의 조파 저항을 효율적으로 감소시킬 수 있는 기술과 관련하여 연구한 내용을 정리하였다. 컨테이너선에 적용이 가능한 조파저항 저감 기술을 개발하고 실선 설계에 사용하기 위하여 최적화 알고리즘, 선체 형상 변경 알고리즘, 선박 성능 예측 알고리즘, 자동화 알고리즘 그리고 반복적 최적 설계 기법을 적용하여 선형 최적 설계를 수행할 수 있는 컴퓨터 프로그램을 개발하였다. 선형최적 설계에 있어서 중요한 요소인 설계 변수의 적절한 설정과 설계 변수의 하한과 상한을 효율적인 설정을 위하여 민감도 분석 알고리즘을 개발하여 선형 최적 설계에 적용하였다. 개발된 컴퓨터 프로그램의 신뢰성과 실선 적용성을 예측하기 위하여 전 세계적으로 다양한 연구가 진행된 컨테이너선인 KCS(KRISO Container Ship) 선박에 대한 선형 최적 설계를 수행하였다. KCS 선박의 설계 속도인 Fn=0.26에서 선형 최적 설계를 수행하였으며, 대상 선박인 KCS 선박의 선형과 선형 최적 설계의 결과로써 도출된 선박의 선형에 대한 수치해석을 수행하여 조파 저항, 파형 그리고 파고를 구하고 서로 비교하였다. 결론적으로, 최적 선박은 대상 선박과 비교하여 조파 저항이 80.60% 감소하였고, 배수량과 침수 표면적은 각각 1.54%, 1.21% 감소하는 것을 알 수 있었다.

Keywords

References

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