KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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On Reasonable Boundary Condition for Inclined Seabed/Structure in Case of the Numerical Model with Quadrilateral Mesh System

사각격자체계 수치모델에서의 경사면 처리기법에 관하여

  • 허동수 (국립경상대학교 토목환경공학부(해양산업연구소)) ;
  • 이우동 (국립경상대학교 대학원 해양토목공학과) ;
  • 배기성 (국립경상대학교 토목환경공학부(해양산업연구소))
  • Received : 2008.06.19
  • Accepted : 2008.08.26
  • Published : 2008.09.30
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Abstract

Present study aims at the development of a reasonable boundary condition for a structure over inclined seabed in case of the numerical model with quadrilateral mesh system. The technique for the inclined impermeable/permeable boundary in the quadrilateral mesh is newly proposed. The new technique and LES-WASS-3D model (Hur and Lee, 2007) have been used for the investigation of the dynamics of fluid field, and validated through the comparison with a typical stair-type boundary condition. 3-Dimensional numerical model with Large Eddy Simulation is called LES-WASS-3D, and is able to simulate directly interaction of WAve Structure Sea bed/Sandy beach.

본 연구에서는 사각격자체계를 이용하는 수치해석기법을 대상으로 격자내에 생성되는 경사면의 합리적인 처리 및 경계조건을 검토하기 위하여 사각격자내에 존재하는 불투과성 및 투과성구조물의 경사면에 대한 새로운 처리기법과 경계조건을 제안한 후, 파 구조물 해저지반/해빈의 상호간섭을 직접 해석할 수 있는 3D-수치모델(LES-WASS-3D; 허와 이, 2007)을 이용하여 수치계산을 실시하였다. 이로부터 얻어진 계산결과와 종래의 계단식 격자구성을 이용한 수치해석결과를 비교 검토하여 제안한 사각격자내의 경사면 처리기법에 대한 타당성을 검증하였다.

Keywords

References

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