한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제14권3호
  • /
  • Pages.41-45
  • /
  • 2000
  • /
  • 1225-0767(pISSN)
  • /
  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
권호 표지

비정상 포텐셜 유동의 패널법 해석에서 포텐셜의 2차 미분값의 수치계산

Numerical Evaluation of 2nd Derivatives of the Potential in the Panel method for the Unsteady Potential Flow Problem

  • 양진호 (부산대학교 조선해양공학과 대학원(현재 현대선박해양연구소)) ;
  • 전호환 (부산대학교 조선해양공학과 기계기술연구소)
  • 발행 : 2000.08.01
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초록

In solving the unsteady potential flow problem of the ship in waves with the panel method, in general one can consider the basic flow as the free stream or double body solution. For the double body solution, the body boundary condition has the 2nd derivatives of the velocity potential. Low order panel methods are known to suffer from the significant error in the 2nd derivatives computed at the body surface. This paper analyzes the numerical error in the 2nd derivatives for a 2-D cylinder and a 3-D sphere problem, and an extrapolation method to obtain the correct derivatives on the body surface is suggested.

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참고문헌

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