A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Numerical investigation of harbor oscillations induced by focused transient wave groups
Abstract Focused wave groups are traveling waves characterized by extremely-large transient wave amplitudes and very short durations. These waves usually cause serious damage to marine/offshore structures and coastal infrastructures, and can even result in human casualties (Nikolkina and Didenkulova, 2011). The studies on natural disasters related to the focused wave groups near the coastal zone have been mostly confined to wave evolution over beaches, wave runup, overtopping, and their impact forces acting on the coastal infrastructures (e.g., the seawall and the circular cylinder); the influence of focused transient wave groups on harbors has not yet been studied. In this study, the generation and propagation of focused transient wave groups and their interactions with the harbor are simulated using a fully nonlinear Boussinesq model, FUNWAVE 2.0. To this end, four elongated harbors with constant depth and a series of focused wave groups with various focused wave amplitudes, spectral width parameters, and incident directions are considered. Based on the Morlet wavelet transform and discrete Fourier transform techniques, the capability of focused transient wave groups to trigger the harbor resonance phenomenon is revealed for the first time. Subsequently, the influences of spectral width parameter, incident wave direction, and resonant mode on different resonant wave parameters (including maximum runup and resonant intensity of various resonant modes inside a harbor) are comprehensively investigated, and it is found that these three factors have significant effects on resonant wave parameters.
Highlights The interactions between focused wave groups and the harbor are first investigated using Boussinesq model. The capacity of focused wave groups to trigger harbor resonance is revealed for the first time. Effects of spectral width parameter, incident wave direction and resonant mode on resonant wave parameters are studied. Resonant wave parameters studied include maximum runup and resonant intensity of various modes in the harbor. All the above three factors are found to have significant effects on the resonant wave parameters.
Numerical investigation of harbor oscillations induced by focused transient wave groups
Abstract Focused wave groups are traveling waves characterized by extremely-large transient wave amplitudes and very short durations. These waves usually cause serious damage to marine/offshore structures and coastal infrastructures, and can even result in human casualties (Nikolkina and Didenkulova, 2011). The studies on natural disasters related to the focused wave groups near the coastal zone have been mostly confined to wave evolution over beaches, wave runup, overtopping, and their impact forces acting on the coastal infrastructures (e.g., the seawall and the circular cylinder); the influence of focused transient wave groups on harbors has not yet been studied. In this study, the generation and propagation of focused transient wave groups and their interactions with the harbor are simulated using a fully nonlinear Boussinesq model, FUNWAVE 2.0. To this end, four elongated harbors with constant depth and a series of focused wave groups with various focused wave amplitudes, spectral width parameters, and incident directions are considered. Based on the Morlet wavelet transform and discrete Fourier transform techniques, the capability of focused transient wave groups to trigger the harbor resonance phenomenon is revealed for the first time. Subsequently, the influences of spectral width parameter, incident wave direction, and resonant mode on different resonant wave parameters (including maximum runup and resonant intensity of various resonant modes inside a harbor) are comprehensively investigated, and it is found that these three factors have significant effects on resonant wave parameters.
Highlights The interactions between focused wave groups and the harbor are first investigated using Boussinesq model. The capacity of focused wave groups to trigger harbor resonance is revealed for the first time. Effects of spectral width parameter, incident wave direction and resonant mode on resonant wave parameters are studied. Resonant wave parameters studied include maximum runup and resonant intensity of various modes in the harbor. All the above three factors are found to have significant effects on the resonant wave parameters.
Numerical investigation of harbor oscillations induced by focused transient wave groups
Gao, Junliang (author) / Ma, Xiaozhou (author) / Zang, Jun (author) / Dong, Guohai (author) / Ma, Xiaojian (author) / Zhu, Yazhou (author) / Zhou, Li (author)
Coastal Engineering ; 158
2020-02-21
Article (Journal)
Electronic Resource
English
Numerical investigation of transient harbor oscillations induced by N-waves
| British Library Online Contents | 2017
Numerical investigation of seismic-induced harbor oscillations
| Elsevier | 2020