Hydrodynamic response of moored ships to seismic-induced harbor oscillations

Zheng, Zhenjun; Ma, Xiaozhou; Yan, Mingyu; Ma, Yuxiang; Dong, Guohai

doi:10.1016/j.coastaleng.2022.104147

Cited by 10 publications

(4 citation statements)

References 49 publications

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“…Likewise, based on DOFs (Degrees Of Freedom), some authors such as López and Iglesias (2014) agree with the hypothesis that the motions in the vessel's horizontal plane (named roll, heave, and yaw) are strongly correlated with the total tsunami wave energy, with the currents being quite significant in ship sway response (Inoue et al, 2001). Furthermore, Ohgaki et al (2008) and Zheng et al (2022) mention that tsunamis are usually closer to the natural period of a mooring system (>80 sec), which makes these waves more prone to generate damage. Given the non-linearity of physical processes, it is pertinent to perform specific studies focused on each situation, configuration, and need (Zheng et al, 2022).…”

Section: Introductionmentioning

confidence: 53%

“…CC BY 4.0 License. al., 2010;Zheng et al, 2022;Lynett et al, 2012). Likewise, based on DOFs (Degrees Of Freedom), some authors such as López and Iglesias (2014) agree with the hypothesis that the motions in the vessel's horizontal plane (named roll, heave, and yaw) are strongly correlated with the total tsunami wave energy, with the currents being quite significant in ship sway response (Inoue et al, 2001).…”

Section: Introductionmentioning

confidence: 70%

“…Furthermore, Ohgaki et al (2008) and Zheng et al (2022) mention that tsunamis are usually closer to the natural period of a mooring system (>80 sec), which makes these waves more prone to generate damage. Given the non-linearity of physical processes, it is pertinent to perform specific studies focused on each situation, configuration, and need (Zheng et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Volcano Tsunamis and their effects on moored vessels safety: The 2022 Tonga event

Padilla,

Aniel-Quiroga,

Omira

et al. 2024

Preprint

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Abstract. The violent explosion of the Hunga Tonga-Hunga Ha’apai volcano on January 15, 2022, was the origin of an atmospheric wave and a volcano-meteorological tsunami (VMT), both of which were recorded worldwide. The Tonga tsunami event caused resonance effects, leading to wave amplification in some far-field coastal areas like La Pampilla port in Callao, Peru, 10,000 km away from the volcano, where the rupture of the Vessel mooring lines occurred 15 hours after the eruption, resulting the spill of over 11,000 barrels of crude oil. This study aims to better understand the coastal effects of the Tonga tsunami, focusing on mooring loads in marine port environments. We examine how the VMT affected the safety of vessel moorings, hypothesising that atmosphere-induced acoustic ocean waves exerted hydrodynamic loading that endangered ships in port areas. A tsunami propagation obtained with a validated Boussinesq model at the local scale in Callao Bay provides the input to the mooring system model applied to a vessel with similar characteristics to the one docked at La Pampilla Port on the day of the Tonga event. This allows to study the effect of the VMT on overstressing and the potential mooring breakage. The results suggest that the Tonga tsunami event could be responsible for the movement and loss of positioning of the vessel. Furthermore, atmospheric waves significantly increased mooring stresses, particularly on the starboard quarter moorings. This event showed the need to prepare Tsunami Early Warning Systems and port authorities for detecting and managing VMTs induced by atmospheric acoustic waves. The work provides new insights into the far-field effects of the Tonga 2022 tsunami and discusses the lessons learned from such an uncommon event.

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Section: Introductionmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

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Volcano Tsunamis and their effects on moored vessels safety: The 2022 Tonga event

Padilla,

Aniel-Quiroga,

Omira

et al. 2024

Preprint

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“…A physical model test was conducted by Rosa-Santos et al [12] to assess the influence between fenders and pre-tensions on ship movement. Zheng et al [13] adopted the transient hydrodynamic characteristics of moored ships under seismic-induced harbor oscillations investigated by a hybrid Boussinesq-panel model where the free-surface oscillations are modeled by a fully nonlinear Boussinesq wave model and are further used to drive the ship motions. Among the moored ships, LNG vessels face more complicated sea conditions due to their open-sea operation platforms' lack of protection by breakwaters; moreover, the liquid gas that LNG ships carry is much more dangerous, so ensuring the safety of the moored LNG ship deserves attention.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Hydrodynamic Responses of a Moored Liquefied Natural Gas Ship under Multimodal Waves

Lu,

Xu,

Xia

et al. 2023

Water

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Ocean waves typically consist of wind, sea, and swell trains. Conventionally, the treatment of multimodal waves has been to conceptualize them as a unified wave system and employ a single set of aggregate wave parameters for the representation of their collective characteristics. Nevertheless, a better understanding of multimodal waves is important when analyzing the interactions between waves and moored vessels, considering the pronounced sensitivity of a ship’s responses to wave periods and directions. Many spectral partitioning methodologies have been proposed to discern and segregate multimodal waves into two or more distinct wave systems, providing fundamental information for investigating moored ship responses to multimodal waves. Utilizing the wave spectra data acquired from a specific water region in South America, a comprehensive numerical study was undertaken by employing the specialized ocean engineering software ORCAFLEX 11.2e. The primary objective of this investigation is to analyze the dynamic response of a moored liquefied natural gas (LNG) vessel in ballast conditions subjected to waves defined by distinct wave identification methods (i.e., overall method and spectral partition method). Furthermore, the waves are categorized into two groups: beam waves and head waves. Results show that beam waves induce a substantial ship response, whereas head waves pose a comparatively lower risk to maritime vessels. Furthermore, the conventional overall wave approach tends to neglect the roll motion generated by multimodal waves when they propagate as head waves. Nevertheless, when the wave direction aligns with beam waves, the overall wave approach tends to produce the roll motion. These findings indicate the importance of considering multimodal waves in quay layout and mooring configuration design.

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Numerical Investigations on Harbor Oscillations Induced by Falling Objects

Gao

Zhang

et al. 2023

China Ocean Eng

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Hydrodynamic response of moored ships to seismic-induced harbor oscillations

Cited by 10 publications

References 49 publications

Volcano Tsunamis and their effects on moored vessels safety: The 2022 Tonga event

Volcano Tsunamis and their effects on moored vessels safety: The 2022 Tonga event

Numerical Investigation of Hydrodynamic Responses of a Moored Liquefied Natural Gas Ship under Multimodal Waves

Numerical Investigations on Harbor Oscillations Induced by Falling Objects

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