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Indexed by:期刊论文

Date of Publication:2017-09-01

Journal:APPLIED OCEAN RESEARCH

Included Journals:Scopus、SCIE、EI

Volume:67

Page Number:188-200

ISSN No.:0141-1187

Key Words:Extreme sea states; Wave pressure; Wave run-up; Fully nonlinear potential flow theory; Coastal vertical seawall

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. (C) 2017 Published by Elsevier Ltd.