Scattering kernel of an array of floating ice floes: application to water wave transport in the marginal ice zone

Montiel, F.; Meylan, M. H.; Hawkins, S. C.

doi:10.1098/rspa.2023.0633

Cited by 6 publications

(2 citation statements)

References 70 publications

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“…As for the ice-specific source terms, physics-based parameterizations suitable for direct implementation in spectral wave models have been formulated for energy-redistribution by scattering (S sc,ice ; , with some serious limitations as discussed in (Montiel et al, 2024); for turbulent, floesize dependent dissipation in the under-ice boundary layer (Herman, 2021); and for flexural and viscoelastic damping (see Shen, 2022, and references therein). In most applications, however, the net S dsi,ice is parameterized as a simple power series S sc,ice = c g a ice E with a ice = on a n f n and one or more coefficients a n different from zero (a n are either constant or dependent on ice thickness, see, e.g., Rogers et al, 2018a, Rogers et al, 2018b.…”

Section: Spectral Wave Modeling In Sea Icementioning

confidence: 99%

From apparent attenuation towards physics-based source terms – a perspective on spectral wave modeling in ice-covered seas

Herman

2024

Front. Mar. Sci.

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Numerical modeling of waves in sea ice covered regions of the oceans is important for many applications, from short-term forecasting and ship route planning up to climate modeling. In spite of a substantial progress in wave-in-ice research that took place in recent years, spectral wave models – the main tool for wave modeling at regional and larger scales – still don’t capture the underlying physics and have rather poor predictive skills. This article discusses recent developments in wave observations and spectral wave modeling in sea ice, identifies problems and shortcomings of the approaches used so far, and sketches future directions that, in the opinion of the author, have the potential to improve the performance of wave-in-ice models.

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Section: Spectral Wave Modeling In Sea Icementioning

confidence: 99%

From apparent attenuation towards physics-based source terms – a perspective on spectral wave modeling in ice-covered seas

Herman

2024

Front. Mar. Sci.

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“…The formulas we provide are also valid for any inter-particle pair correlation. For a radiative transfer model of this setting, see [20].…”

Section: (C) the Cylindrical Settingmentioning

confidence: 99%

Effective T-matrix of a cylinder filled with a random two-dimensional particulate

Napal,

Piva,

Gower

2024

Proc. R. Soc. A.

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When a wave, such as sound or light, scatters within a densely packed particulate, it can be rescattered many times between the particles, which is called multiple scattering. Multiple scattering can be unavoidable when trying to use sound waves to measure a dense particulate, such as a composite with reinforcing fibres. Here, we solve from first principles multiple scattering of scalar waves, including acoustic, for any frequency from a set of two-dimensional particles confined in a circular area. This case has not been solved yet, and its solution is important to perform numerical validation, as particles within a cylinder require only a finite number of particles to perform direct numerical simulations. The method we use involves ensemble averaging over particle configurations, which leads us to deduce an effective T-matrix for the whole cylinder, which can be used to easily describe the scattering from any incident wave. In the specific case when the particles are monopole scatterers, the expression of this effective T-matrix simplifies and reduces to the T-matrix of a homogeneous cylinder with an effective wavenumber k ⋆ . To validate our theoretical predictions, we develop an efficient Monte Carlo method and conclude that our theoretical predictions are highly accurate for a broad range of frequencies.

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Motion characteristics of a modularized floating solar farm in waves

Wei,

Zou,

Zhang

et al. 2024

Physics of Fluids

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Modularized floating solar farms exhibit the potential to replace conventional steel-frame ones, effectively remedying hydroelastic issues of a very large floating structure through discrete modules with mechanical connections. However, the response of the discrete modules under cyclic wave loading has not been fully understood. This paper assesses the motion characteristics and expansibility of modularized floaters in waves, based on computational results from fluid–structural interaction simulations. A crucial factor, denoted as the ratio of frame length to wavelength R=Ls/λ, is determined to predict the motions of a large floating solar system in head waves. Results indicate that the motion characteristics is predictable based on the R value. The empirical relationship between the R value and the motion of every unit in an array is analyzed. In particular, the results calculated from using the multiple-rigid-bodies method are also compared with those from using the single-large-hydroelastic-body method, and it was found that these two results are similar when R > 1. This similarity allows for predicting the multi-hinged bodies' behavior in waves through a simplified hydroelastic approach. Overall, this study reports insights that are useful for the design and optimization of modularized solar farms and can help address cyclic loading and motion concerns for long-term durability.

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Scattering kernel of an array of floating ice floes: application to water wave transport in the marginal ice zone

Cited by 6 publications

References 70 publications

From apparent attenuation towards physics-based source terms – a perspective on spectral wave modeling in ice-covered seas

From apparent attenuation towards physics-based source terms – a perspective on spectral wave modeling in ice-covered seas

Effective T-matrix of a cylinder filled with a random two-dimensional particulate

Motion characteristics of a modularized floating solar farm in waves

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