Topographic influences on transient harbor oscillations excited by N-waves

Gao, Junliang; Ma, Xiaozhou; Dong, Guohai; Zang, Jun; Zhou, Xiaojun; Zhou, Li

doi:10.1016/j.oceaneng.2019.106548

Cited by 27 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Before the energy propagating from the external incident waves is balanced by energy dissipation generated by bottom friction, boundary absorption, and radiation from the entrance, the stationary resonance inside a bay or a harbor grows significantly (e.g., Gao et al (2017b); Gao et al (2019b); Kumar and Gulshan (2018); Losada et al (2008); Wang et al (2014)). A small number of scholars have also implemented the investigations on the transient harbor oscillations, which are basically triggered by tsunami waves or transient wave groups (Endoh et al, 2018;Gao et al, 2021;Gao et al, 2019a;Gao et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Investigation on the effects of Bragg reflection on harbor oscillations

Gao

Dong

et al. 2021

Coastal Engineering

Self Cite

192

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Investigation on the effects of Bragg reflection on harbor oscillations

Gao

Dong

et al. 2021

Coastal Engineering

Self Cite

192

View full text Add to dashboard Cite

“…Recently, considering that real harbors generally have uneven bottoms and the local topography in front of the quay is usually variable (e.g., Gao et al (2019b;2021b)), the influences of both the incident wave height and the topographic variation on the total resonant wave heights between a ship cross-section and a vertical quay and on the total wave loads on the ship cross-section were systematically investigated by Gao et al (2019aGao et al ( , 2020b. However, the nonlinear features of these hydrodynamic parameters under conditions of various incident wave heights and topographies are still unknown.…”

Section: Employed Amentioning

confidence: 99%

Harmonic Analyses of Hydrodynamic Characteristics for Gap Resonance Between Fixed Box and Vertical Wall

Gao

Chen

et al. 2021

China Ocean Eng

Self Cite

View full text Add to dashboard Cite

Two marine structures arranged side by side with a narrow gap may suffer from violent free-surface resonance, which would cause green water on deck, dramatically raise hydrodynamic loads on structures and seriously threaten the operation safety. The CFD-based open-sourced software, OpenFOAM ® , is employed to simulate the two-dimensional fluid resonance inside a narrow gap between a fixed box and a vertical wall induced by regular waves with different wave heights. The topographies with various plane slopes are placed in front of the wall. The focus of this article is on the influences of the incident wave height and the topographic slope on the nonlinear characteristics of various hydrodynamic parameters (including the wave height in the gap, the vertical wave force, and the horizontal wave force on the box) during gap resonance. The ratios of their high-order to the corresponding 1 st -order components under different sets of the incident wave height and the topographic slope are analyzed. It is found that the relative importance of all the high-order components increases gradually with the incident wave height for all the three parameters. The topographic influence on them closely depends on the type of the parameters and the incident wave height. In addition, the occurrence of the 2 nd -order gap resonance phenomenon can cause the 2 nd -order wave height and horizontal force to become significantly larger than the corresponding 1 st -order components.

show abstract

“…Heretofore, the studies on harbor resonance induced by Nwaves are seldom seen. Gao et al (2017a;2019b) introduced N-waves to implement some pioneering research work on the resonance in harbors with various topographies and found that many resonant features are distinct from those triggered by solitary waves. However, the flat-bottom assumption outside the harbor was always adopted in these two papers.…”

Section: Introductionmentioning

confidence: 99%

Study on Influences of Fringing Reef on Harbor Oscillations Triggered by N-Waves

et al. 2021

Self Cite

View full text Add to dashboard Cite

Influences of topographic variations of the offshore fringing reef on the harbor oscillations excited by incident N-waves with different amplitudes and waveform types are studied for the first time. Both the propagation of the N-waves over the reef and the subsequently-induced harbor oscillations are simulated by a Boussinesq-type numerical model, FUNWAVE-TVD. The present study concentrates on revealing the influences of the plane reef-face slope, the reef-face profile shape and the lagoon width on the maximum runup, the wave energy distribution and the total wave energy within the harbor. It shows that both the wave energy distribution uniformity and the total wave energy gradually increase with decreasing reef-face slope. The profile shape of the reef face suffering leading-elevation N-waves (LEN waves) has a negligible impact on the wave energy distribution uniformity, while for leading-depression N-waves (LDN waves), the latter gradually decreases with the mean water depth over the reef face. The total wave energy always first increases and then decreases with the mean water depth over the reef face. In general, the total wave energy first sharply decreases and then slightly increases with the lagoon width, regardless of the reef-face width and the incident waveform type. The maximum runup subjected to the LEN waves decreases monotonously with the lagoon width. However, for the LDN waves, its changing trend with the lagoon width relies on the incident wave amplitude.

show abstract

Topographic influences on transient harbor oscillations excited by N-waves

Cited by 27 publications

References 45 publications

Investigation on the effects of Bragg reflection on harbor oscillations

Investigation on the effects of Bragg reflection on harbor oscillations

Harmonic Analyses of Hydrodynamic Characteristics for Gap Resonance Between Fixed Box and Vertical Wall

Study on Influences of Fringing Reef on Harbor Oscillations Triggered by N-Waves

Contact Info

Product

Resources

About