Extreme wave run-up and pressure on a vertical seawall

Dezhi Ning, Rongquan Wang, L. F. Chen, Jinxuan Li, Jun Zang, Liang Cheng, Shuxue Liu

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)
116 Downloads (Pure)

Abstract

The performance of coastal vertical seawalls in extreme weather events is studied numerically, aiming to provide guidance in designing and reassessing coastal structures with vertical wall. The extreme wave run-up and the pressure on the vertical seawall are investigated extensively. A time-domain higher-order boundary element method (HOBEM) is coupled with a mixed Eulerian-Lagrangian technique as a time marching technique. Focused wave groups are generated by a piston wave-maker in the numerical wave tank using a wave focusing technique for accurately reproducing extreme sea states. An acceleration-potential scheme is used to calculate the transient wave loads. Comparisons with experimental data show that the extended numerical model is able to accurately predict extreme wave run-ups and pressures on a vertical seawall. The effects of the wave spectrum bandwidth, the wall position and the wave nonlinearity on the wave run-up and the maximum wave load on the vertical seawall are investigated by doing parametric studies.

Original languageEnglish
Pages (from-to)188-200
Number of pages13
JournalApplied Ocean Research
Volume67
Early online date4 Aug 2017
DOIs
Publication statusPublished - 1 Sep 2017

Keywords

  • Coastal vertical seawall
  • Extreme sea states
  • Fully nonlinear potential flow theory
  • Wave pressure
  • Wave run-up

ASJC Scopus subject areas

  • Ocean Engineering

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