Modeling sediment movement in the shallow-water framework: A morpho-hydrodynamic approach with numerical simulations and experimental validation

Guerrero Fernández, E.; Díaz, M.J. Castro; Wei, Y.; Moore, C.

doi:10.1016/j.ocemod.2024.102445

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Modeling sediment movement in the shallow-water framework: A morpho-hydrodynamic approach with numerical simulations and experimental validation

2024
By Guerrero Fernández, E. ; Díaz, M.J. Castro ; Wei, Y. ; ...
Source: Ocean Modelling, 192, 102445
Series: PMEL contribution; no. 5626

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Journal Title:

Ocean Modelling
Personal Author:

Guerrero Fernández, E. ; Díaz, M.J. Castro ; Wei, Y. ; Moore, C.

Guerrero Fernández, E. ; Díaz, M.J. Castro ; Wei, Y. ; Moore, C. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory)

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory) Less -
Description:

This work presents a morpho-hydrodynamic model and a numerical approximation designed for the fast and accurate simulation of sediment movement associated with extreme events, such as tsunamis. The model integrates the well-established hydrostatic shallow-water equations with a transport equation for the moving bathymetry that relies on a bedload transport function. Subsequently, this model is discretized using the path-conservative finite volume framework to yield a numerical scheme that is not only fast but also second-order accurate and well-balanced for the lake-at-rest solution. The numerical discretization separates the hydrodynamic and morphodynamic components of the model but leverages the eigenstructure information to evolve the morphologic part in an upwind fashion, preventing spurious oscillations. The study includes various numerical experiments, incorporating comparisons with laboratory experimental data and field surveys.
Source:

Ocean Modelling, 192, 102445
Series:

PMEL contribution; no. 5626
DOI:

https://doi.org/10.1016/j.ocemod.2024.102445
ISSN:

1463-5003
Format:

PDF
Publisher:

Elsevier BV
Document Type:

Journal Article
Funding:

Grant no. NA20OAR4320271
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

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urn:sha-512:190e55936ce77358a05bfa2a3bd563e19f04c56e6731ec1442ed6cff7a990e475684610c97916e9e4ca9eac1ebd4095978be6793114babccf307a34936f63eb2
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https://repository.library.noaa.gov/view/noaa/67438/noaa_67438_DS1.pdf
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Modeling sediment movement in the shallow-water framework: A morpho-hydrodynamic approach with numerical simulations and experimental validation

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