The impacts of internal solitary waves on a submerged floating tunnel

Zou, P.X.; Bricker, Jeremy D.; Uijttewaal, W.S.J.

doi:10.1016/j.oceaneng.2021.109762

Cited by 35 publications

(3 citation statements)

References 28 publications

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“…ISWs are of great importance to various scientific issues, including sound propagation [3], pollutant transport [4], and primary productivity [5]. ISWs carry a lot of energy and can cause strong density displacement, which is serious threat to underwater structures and submarines [6][7][8]. For example, studies show that the Indonesian navy submarine KRI Nanggala 402 is likely to have had an accident that was affected by ISWs [9,10].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Internal Solitary Waves in the Timor Sea Observed by SAR Satellite

et al. 2023

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Internal solitary waves (ISWs) with features such as large amplitude, short period, and fast speed have great influence on underwater thermohaline structure, nutrient transport, and acoustic signal propagation. The characteristics of ISWs in hotspot areas have been revealed by satellite images combined with mooring observation. However, the ISWs in the Timor Sea, which is located in the outflow of the ITF, have not been studied yet and the characteristics are unrevealed. In this study, by employing the Synthetic Aperture Radar (SAR) images taken by the Sentinel-1 satellite from 2017 to 2022, the temporal and spatial distribution characteristics of ISWs in the Timor Sea are analyzed. The results show that most of ISWs appear in Bonaparte basin and its vicinity. The average wavelength of the ISWs is 248 m, and most of the wave lengths are less than 400 m. The peak line of ISWs is longer in deeper water. The underwater structures of two typical ISWs are reconstructed based on the Korteweg–de Vries (KdV) equation combined with mooring observation. This shows that, compared with the two-layer model, the continuous layered model is more suitable for reconstructing the underwater structures of ISWs. Further analysis shows that both the rough topography and the spring-neap tides contribute to the generation of ISWs in the Timor Sea. This study fills a gap in knowledge of ISWs in regional seas, such as the Timor Sea.

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Section: Introductionmentioning

confidence: 99%

Characteristics of Internal Solitary Waves in the Timor Sea Observed by SAR Satellite

et al. 2023

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“…In terms of the sources, the dynamic loads include the hydrodynamic forces by wave (Zou et al, 2021) and/or current (Zhang et al, 2021), inner/outer impact and explosion (Kristoffersen et al, 2019;Colombo et al, 2021;Luo et al, 2021a), earthquake (Fogazzi and Perotti, 2000;Martinelli et al, 2011;Lee et al, 2016;Xie and Chen, 2021), moving vehicles (Lin et al, 2018(Lin et al, , 2019Xiang et al, 2021;Yang et al, 2021), etc. Of course, the studies of two or more kinds of dynamic loads on SFT simultaneously considering (Di Pilato et al, 2008;Jin and Kim, 2018;Luo et al, 2021b;Jin et al, 2021) are widely found.…”

Section: Introductionmentioning

confidence: 99%

Two elastic supporting models to simulate the submerged floating tunnel and their equivalence on the free/forced vibrations

Yan

Pan

et al. 2023

Journal of Vibration and Control

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By applying two elastically supporting styles, the elastic supports beam (ESB) and elastic foundation beam (EFB) are proposed to simulate the underwater submerged floating tunnel (SFT) under hinged boundaries. Their equivalence is investigated through the frequencies/modes and forced responses caused by equidistant moving loads. The ESB model is built by regarding each tether as an elastic support and using the novel isolating/assembling technique between beam-segments and global tube, and the order of characteristic matrix for any number of intermediate elastic supports is reduced to 4 × 4. Then, the stiffness of all elastic supports and the uniformity/non-uniformity are well considered in the ESB model. The governing equations of the EFB model with a uniform linear elastic support are also given. The newly discovered results, which are verified by the finite element method (FEM), indicate the merging phenomena appear in the frequency spectrum in the ESB model. The equivalence holds for some uniform cases in the ESB model based on the peak values of responses by using the stiffness relationship and a correction coefficient, whereas the equivalence does not exist for the uneven case of elastic supports.

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“…An internal wave is an important type of seawater movement that is not only an important part of transferring large-scale and medium-scale motion energy, but also an important reason for seawater mixing and the formation of fine structures [1][2][3][4]. An internal wave is an internal wave of a marine water body with stable density stratification.…”

Section: Introductionmentioning

confidence: 99%

Higher-Order Benjamin–Ono Model for Ocean Internal Solitary Waves and Its Related Properties

Ren,

Dong,

Zhao

et al. 2023

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In this study, the propagation of internal solitary waves in oceans at great depths was analyzed. Using multi-scale analysis and perturbation expansion, the basic equation is simplified to the classical Benjamin–Ono equation with variable coefficients. To better describe the propagation characteristics of solitary waves, we derived a higher-order variable-coefficient integral differential (Benjamin–Ono) equation. Subsequently, the bilinear form of the model was derived using Hirota’s bilinear method, and a multi-soliton solution was obtained. Based on the multi-soliton solution of the model, we further studied the interaction of the soliton, which led to the discovery of Mach reflection. Some conclusions were drawn, which are of potential value for further study of solitary waves in the ocean.

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The impacts of internal solitary waves on a submerged floating tunnel

Cited by 35 publications

References 28 publications

Characteristics of Internal Solitary Waves in the Timor Sea Observed by SAR Satellite

Characteristics of Internal Solitary Waves in the Timor Sea Observed by SAR Satellite

Two elastic supporting models to simulate the submerged floating tunnel and their equivalence on the free/forced vibrations

Higher-Order Benjamin–Ono Model for Ocean Internal Solitary Waves and Its Related Properties

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