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

The Society of Naval Architects of Korea (대한조선학회)
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Study on Hull Form Variation of Fore Body Based on Multiple Parametric Modification Curves

다중 파라메트릭 변환곡선 기반 선수 선형 변환기법 연구

  • Park, Sung-Woo (Mid-size Initial Ship Design Unit, Korea Research Institute of Ships & Ocean Engineering) ;
  • Kim, Seung-Hyeon (Mid-size Initial Ship Design Unit, Korea Research Institute of Ships & Ocean Engineering) ;
  • Lee, Inwon (Department of Naval Architecture and Ocean Engineering, Pusan National University)
  • 박성우 (선박해양플랜트연구소 중형선박설계사업단) ;
  • 김승현 (선박해양플랜트연구소 중형선박설계사업단) ;
  • 이인원 (부산대학교 조선해양공학과)
  • Received : 2021.11.18
  • Accepted : 2022.01.28
  • Published : 2022.04.20
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Abstract

In this paper, we propose a systematic hull form variation technique which automatically satisfies the displacement constraint and guarantees a high level of fairness. This method is possible through multiple parameter correction curves. The present method is to improve the hull form variation method based on parametric modification function and consists of two sub-categories: SAC variation and section lines modification. For SAC variation, the utilization of two B-Spline curves satisfying GC1 condition led to the satisfaction of displacement constraint and high level of fairness at the same time. Section lines modification methods involves in using two fuctions: the first is the waterplane modification function combining two cubic splines. the other function is the sectional area modification function consisting of 2nd order polynomial over the DLWL(Design Load Waterline) and 3rd order polynomial below the DLWL, This function enables not only the fundamental U-V section shape variation but also systematically modified section lines. The present method is expected to be more useful in the hull form optimization process using CFD compared to the existing method.

Keywords

Acknowledgement

이 논문은 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음

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