Generation of Periodic Wave Using Lagrange-Plus Remap Finite Element Method for Evaluating the Vulnerability of Coastal Bridges to Extreme Weather Events

The study of the vulnerability of coastal bridges due to wave impacts through numerical methods requires the correct generation of nonlinear, long-period waves at shallow water conditions. In this paper, waves are generated using the first-order wave theory based on the “Lagrange-plus-remap” finite element method. The free surface elevation was obtained as a function of space and time. The accuracy and the stability of the generated waves, and the boundary condition effects on the results were analyzed in this study. The generated wave has been observed to slightly deviate from the analytical solution in terms of amplitude and phase. The outlet surface has been observed to cause wave reflections that affect the profile of the incoming waves. A Fourier analysis revealed that initial disturbances dissipate as the wave progresses, making the generated wave stable.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 133-140
  • Monograph Title: Tran-SET 2020

Subject/Index Terms

Filing Info

  • Accession Number: 01762792
  • Record Type: Publication
  • ISBN: 9780784483305
  • Files: TRIS, ASCE
  • Created Date: Jan 12 2021 3:03PM