A Fast Simulation Method for Wave Transformation Processes In Coastal Zones

Herrera-Díaz, Israel E.; Couder-Castañeda, Carlos; León, H. Ramírez

doi:10.22201/icat.16656423.2011.9.02.462

Cited by 4 publications

(5 citation statements)

References 15 publications

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“…The results shown in the study allow us to observe the waves that appear on stage without the outline of the road in an open area, such as within the swamp; obtaining wave heights for normal conditions and extraordinary conditions (storm season), where the results of the numerical model are compared with measurements from the institutions in charge of measuring oceanographic variables, showing an acceptable approximation to the records and observations in place. The equations of the numerical model, previously developed by Herrera et al [2], applied to infrastructure works, such as breakwaters, show an acceptable approximation to agitation phenomena in shallow areas, this was observed in the values obtained from the numerical simulation within the swamp and its interaction with the coastal zone.…”

Section: Simulation Without Landward Roadwaymentioning

confidence: 91%

“…Numerical Scheme. The numerical solution of Equations ( 2)-(4) was developed by Herrera et al [2,24] using a staggered grid method in the grid wave height is calculated at the solid grid points, labelled (i -1, j), (i, j), (i + 1, j), (i, j -1), and (i, j + 1), and the velocities are calculated at the open grid points, labelled (i -1/2, j), (i + 1/2, j), j + 1/2, i), and (j -1/2, i). Specifically, x is calculated at points (i -1/2, j) and (i + 1/2, j) and y is calculated at different points (j + 1/2, i) and (j -1/2, i).…”

Section: Sea Surge Model Description the Equation Developed Bymentioning

confidence: 99%

“…In 1990s some software programs were created and commercialized to solve the numerical simulations in wave process analysis, especially studies in nearshore and wave interactions with coastal structures. The main goal was the presented a numerical model developed to solve free surface nearshore wave processes [2,3] and the interaction with breakwaters in construction on roadway.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Modelling of Free Surface Agitation in a Coastal Lagoon by Roadway Path Influence

Herrera-Díaz

Torres-Bejarano

Moreno-Martínez

et al. 2023

Modelling and Simulation in Engineering

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The development and construction of highway infrastructure are essential in developing countries, whereas its layout and construction sometimes interact with the coastal environment. One problem to attend to is that the outline and geometry designs impact as little as possible on the hydrodynamic circulation of coastal bodies in order to alter the associated ecosystem as little as possible. The study area is located in the north of Colombia, and is made up of a continental coastal zone (Mallorquín Lagoon) and a marine zone (Caribbean Sea), in which a highway is projected that provides communication between two locations. This study presents the application of a numerical model previously developed and modified by the Berkhoff equation, which is developed in a finite difference scheme and has been validated and applied in different works in coastal and fluvial shallow water areas. The application of the model was carried out in a hydrodynamic circulation research project for a one-way highway through a coastal lagoon, where the knowledge of the magnitude of the incident wave height in the structure of the road body is necessary for the design, protection elements, and road geometry. Two numerical simulation scenarios were carried out, specifying normal conditions and extraordinary wave conditions in the month of November with a simulation time of 15 days, obtaining the velocity field associated with coastal currents, waves, and wave modification phenomena, such as refraction, diffraction, and reflection, which provide the height of the incident wave on the highway and the recirculation patterns in the coastal lagoon to identify alterations in the ecosystem. The results of the wave height in each scenario and the velocity field provide values to be used in the design, type of armor, and dimensions of the protection works required for the proper functioning of the road structure.

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Section: Simulation Without Landward Roadwaymentioning

confidence: 91%

Section: Sea Surge Model Description the Equation Developed Bymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Modelling of Free Surface Agitation in a Coastal Lagoon by Roadway Path Influence

Herrera-Díaz

Torres-Bejarano

Moreno-Martínez

et al. 2023

Modelling and Simulation in Engineering

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“…The first step is to determine the hydrodynamics of the zone. For this purpose, a well proven numerical hydrodynamic model was used [2,4,33,34] to generate the velocities field for the months of March and October under several initial conditions at the entry of the dock. Flow rates for the years from 2005 to 2013 for the specific months of March and October are mentioned in Table 1.…”

Section: Simulation In the Study Zonementioning

confidence: 99%

Light Particle Tracking Model for Simulating Bed Sediment Transport Load in River Areas

Herrera-Díaz

Torres-Bejarano

Moreno-Martínez

et al. 2017

Mathematical Problems in Engineering

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In this work a fast computational particles tracer model is developed based on Particle-In-Cell method to estimate the sediment transport in the access zone of a river port area. To apply the particles tracer method, first it is necessary to calculate the hydrodynamic fields of the study zone to determine the velocity fields in the three directions. The particle transport is governed mainly by the velocity fields and the turbulent dispersion. The mechanisms of dispersion and resuspension of particles are based in stochastic models, which describes the movement through a probability function. The developed code was validated using two well known cases with a discrete transformation obtaining a max relative error around 4.8% in both cases. The simulations were carried out with 350,000 particles allowing us to determine under certain circumstances different hydrodynamic scenarios where the zones are susceptible to present erosion and siltation at the entrance of the port.

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“…Studying these vortices is of great interest to environmental engineers because they have great influence on silt and other solutes transportation. For instance, the study of vortices influenced by effluents, and other thermal and radioactive waste originating released from hydroelectric or nuclear-electric plants into coastal waters is important for marine animal life [2,3].…”

Section: Introductionmentioning

confidence: 99%

Modelling Shallow Water Wakes Using a Hybrid Turbulence Model

Rodríguez-Cuevas

Couder-Castañeda

Flores-Mendez

et al. 2014

Journal of Applied Mathematics

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A numerical research with different turbulence models for shallow water equations was carried out. This was done in order to investigate which model has the ability to reproduce more accurately the wakes produced by the shock of the water hitting a submerged island inside a canal. The study of this phenomenon is important for the numerical methods application advancement in the simulation of free surface flows since these models involve a number of simplifications and assumptions that can have a significant impact on the numerical solutions quality and thus can not reproduce correctly the physical phenomenon. The numerical experiments were carried out on an experimental case under controlled conditions, consisting of a channel with a submerged conical island. The numerical scheme is based on the Eulerian-Lagrangian finite volume method with four turbulence models, three mixing lengths (ml), and one joining -on the horizontal axis with a mixing-length model (ml) on the vertical axis. The experimental results show that a -with ml turbulence model makes it possible to approach the experimental results in a more qualitative manner. We found that when using only a -model in the vertical and horizontal direction, the numerical results overestimate the experimental data. Additionally the computing time is reduced by simplifying the turbulence model.

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A Fast Simulation Method for Wave Transformation Processes In Coastal Zones

Cited by 4 publications

References 15 publications

Numerical Modelling of Free Surface Agitation in a Coastal Lagoon by Roadway Path Influence

Numerical Modelling of Free Surface Agitation in a Coastal Lagoon by Roadway Path Influence

Light Particle Tracking Model for Simulating Bed Sediment Transport Load in River Areas

Modelling Shallow Water Wakes Using a Hybrid Turbulence Model

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