HYDRODYNAMIC EFFICIENCY AND LOADING OF A TSUNAMI-FLOODING BARRIER (TFB)

  • Hisham Elsafti Leichtweiss-Institute, TU Braunschweig
  • Hocine Oumeraci Professor, Dept. of Hydromechanics and Coastal Engineering, Leichtweiss-Institute for Hydraulic Engineering and Water Resources, TU Braunschweig, Germany. E-mail: h.oumeraci@tu-braunschweig.de
  • Hans Scheel Professor and head of Scheel Consulting, Switzerland. E-mail: hans.scheel@bluewin.ch
Keywords: Tsunami, barrier, solitary waves, wave loading, deflecting parapet, surge stopper

Abstract

The Tsunami-Flooding Barrier (TFB) is an impermeable vertical structure proposed at relatively large water depths, at which it is theorised that a tsunami will reach the structure before turning into a bore. The proposed hypothesis is tested in this study by means of a validated Computational Fluid Dynamics (CFD) model. The hydrodynamic efficiency of the impermeable TFB structure is confirmed and the effect of different aspects on the hydrodynamic efficiency of the structure are studied. These aspects include water depth, free board, surface roughness and the consideration of a deflecting parapet (named here as a surge stopper). Further, a new method is developed for calculating the tsunami-like solitary wave run-up and loads on the structure. The method is then compared to the Goda method for calculating storm wave loads on vertical impermeable structures. It is concluded that using the Goda method will severely underestimate the tsunami-like solitary wave load on the TFB structure.

Author Biography

Hisham Elsafti, Leichtweiss-Institute, TU Braunschweig
Post doc/research associate

References

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Published
2017-06-23
How to Cite
Elsafti, H., Oumeraci, H., & Scheel, H. (2017). HYDRODYNAMIC EFFICIENCY AND LOADING OF A TSUNAMI-FLOODING BARRIER (TFB). Coastal Engineering Proceedings, 1(35), structures.23. https://doi.org/10.9753/icce.v35.structures.23