Numerical simulation of long wave runup for breaking and nonbreaking waves

Mostafa S. Shadloo, Robert Weiss, Mehmet Yildiz, Robert A. Dalrymple

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Tsunamis produce a wealth of quantitative data that can be used to improve tsunami hazard awareness and to increase the preparedness of the population at risk. These data also allow for a performance evaluation of the coastal infrastructure and observations of sediment transport, erosion, and deposition. The interaction of the tsunami with coastal infrastructures and with the movable sediment bed is a three-dimensional process. Therefore, for runup and inundation prediction, three-dimensional numerical models must be employed. In this study, we have employed Smoothed Particle Hydrodynamics (SPH) to simulate tsunami runup on idealized geometries for the validation and exploration of three-dimensional flow structures in tsunamis. We make use of the canonical experiments for long-wave runup for breaking and nonbreaking waves. The results of our study prove that SPH is able to reproduce the runup of long waves for different initial and geometric conditions. We have also investigated the applicability and the effectiveness of different viscous terms that are available in the SPH literature. Additionally, a new breaking criterion based on numerical experiments is introduced, and its similarities and differences wiThexisting criteria are discussed.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalInternational Journal of Offshore and Polar Engineering
Volume25
Issue number1
StatePublished - Jan 1 2015

Keywords

  • CUDA GPU
  • Particle methods
  • Smoothed particle hydrodynamics (SPH)
  • Solitary wave
  • Sub particle scales (sps) turbulence
  • Tsunami

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Mechanical Engineering

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