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

The Society of Naval Architects of Korea (대한조선학회)
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Hull Form Generation of Minimum Wave Resistance by a Nonlinear Optimization Method

비선형 최적화 기법에 의한 최소 조파저항 선형 생성

  • 김희정 (부산대학교 조선해양공학과 대학원) ;
  • 전호환 (부산대학교 조선해양공학과(기계기술연구소))
  • Published : 2000.11.01
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Abstract

This paper is concerned with the generation of an optimal forward hull form by a nonlinear programming method. A Rankine source panel method based on the inviscid and potential flow approximation is employed to calculate the wave-making resistance and SQP method is also used for the optimization. The hull form is represented by a spline function. The forward hull form of a minimum wave resistance with the given design constraints is generated. In addition, the forward hull form of a minimum total resistance by considering the frictional resistance together with an empirical form factor is produced and compared with the former result.

본 논문은 조파저항 성능 평가법을 비선형 계획법에 적용해서 선수 형상의 최적화에 응용한 연구결과이다. 조파저항은 비점성 포텐셜 유동의 가정으로 랜킨 소오스법(Rankine source method)을 이용하여 계산하였고 최적화 기법으로는 SQP(Sequential Quadratic Programming)법을 이용하였다. 선수형상의 표현과 변경은 스플라인(spline)함수를 이용하였으며 본 방법에 의하여 조파저항이 최소가 되는 선수형상의 결정이 가능하였다. 또한 마찰저항공식과 경험식으로 주어지는 형상영향계수(from factor)를 고려한 점성저항을 첨가하여 총 저항이 최소가 되는 선수 형상도 도출하여 서로 비교하였다.

Keywords

References

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