한국해안해양공학회지 (Journal of Korean Society of Coastal and Ocean Engineers)

한국해안·해양공학회 (Korean Society of Coastal and Ocean Engineers)
권호 표지

지진해일 전파 수치모의를 위한 2차원 유한요소모형의 능동적 분산보정기법

Active Dispersion-Correction Scheme of 2-D Finite Element Model for Simulation of Tsunami Propagation

  • 윤성범 (한양대학교 공학대학 토목환경공학과) ;
  • 임채호 (한양대학교 공학대학 토목환경공학과)
  • Yoon Sung Bum (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Lim Chae Ho (Department of Civil and Environmental Engineering, Hanyang University)
  • 발행 : 2005.03.01
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초록

지진해일을 수치모의할 때 임의로 구성된 유한요소망과 양해법을 사용하면서도 Boussinesq 방정식과 같은 정도의 물리적 분산효과를 고려할 수 있는 능동적인 분산보정 2차원 유한요소모형을 개발하였다. 새로운 기법을 이용하여 계산한 수치해와 파의 분산효과를 고려한 해석해의 비교를 통해 본 연구에서 개발한 분산보정기법의 타당성을 입증하였다. 그 결과 개발된 수치모형이 상당히 정확함을 보였다.

For the simulation of tsunami propagation an active dispersion-correction two-dimensional finite element model has been developed based on a shallow-water wave equation. This model employs an arbitrary triangular mesh and an explicit time integration scheme. However, the physical dispersion effects as included in the Boussinesq equations can be taken into account in the computation. The validity of the dispersion-correction scheme developed in this study is verified through the comparison of numerical solutions calculated using the new scheme with analytical ones considering dispersion effect of waves. As a result, the present model is shown to be considerably accurate.

키워드

참고문헌

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