A 3D shock-capturing model for free surface flow

Cannata, Giovanni; Lasaponara, Francesco; Camilli, F.; Petrelli, Chiara; Gallerano, Francesco

doi:10.2495/afm160181

Cited by 6 publications

(1 citation statement)

References 13 publications

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“…(1) High order WENO reconstructions, from cell averaged values, of the point values of the unknown variables at the centre of the contour faces which define the calculation cells. At the centre of the contour face which is common with two adjacent cells, two-point values of the unknown variables are reconstructed by means of two WENO reconstruction defined on two adjacent cells [15,16].…”

Section: Numerical Schemementioning

confidence: 99%

Numerical investigation of the three-dimensional velocity fields induced by wave-structure interaction

Cannata¹,

Gallerano²,

Palleschi³

et al. 2019

ITM Web Conf.

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Submerged shore-parallel breakwaters for coastal defence are a good compromise between the need to mitigate the effects of waves on the coast and the ambition to ensure the preservation of the landscape and water quality. In this work we simulate, in a fully three-dimensional form, the hydrodynamic effects induced by submerged breakwaters on incident wave trains with different wave height. The proposed three-dimensional non-hydrostatic finite-volume model is based on an integral form of the Navier-Stokes equations in σ-coordinates and is able to simulate the shocks in the numerical solution related to the wave breaking. The obtained numerical results show that the hydrodynamic phenomena produced by wave-structure interaction have features of three-dimensionality (undertow), that are locally important, and emphasize the need to use a non-hydrostatic fully-three-dimensional approach.

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Section: Numerical Schemementioning

confidence: 99%

Numerical investigation of the three-dimensional velocity fields induced by wave-structure interaction

Cannata¹,

Gallerano²,

Palleschi³

et al. 2019

ITM Web Conf.

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A 3D Numerical Model for Turbidity Currents

Cannata

Barsi

Tamburrino

2020

Wseas Transactions on Fluid Mechanics

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A numerical model that solves two-phase flow motion equations to reproduce turbidity currents that occur in reservoirs, is proposed. Three formalizations of the two-phase flow motion equations are presented: the first one can be adopted for high concentration values; the second one is valid under the hypothesis of diluted concentrations; the third one is based on the assumption that the particles are in translational equilibrium with the fluid flow. The proposed numerical model solves the latter formalization of two-phase flow motion equations, in order to simulate turbidity currents. The motion equations are presented in an integral form in time-dependent curvilinear coordinates, with the vertical coordinate that varies in order to follow the free surface movements. The proposed numerical model is validated against experimental data and is applied to a practical engineering case study of a reservoir, in order to evaluate the possibility of the formation of turbidity currents.

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Boundary Conditions for the Simulation of Wave Breaking

Iele

Palleschi

Gallerano

2020

Wseas Transactions on Fluid Mechanics

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In this paper we propose a new numerical model for the simulation of the wave breaking. The threedimensional equations of motion are expressed in integral contravariant form and are solved on a curvilinear boundary conforming grid that is able to represent the complex geometry of coastal regions. A time-dependent transformation of the vertical coordinate that is a function of the oscillation of the turbulent wave boundary layer is proposed. A new numerical scheme for the simulation of the resulting equations is proposed. New boundary conditions at the free surface and bottom for the equations of motion expressed in contravariant form are proposed. We present an analysis of the importance of the correct positioning, inside the oscillating turbulent boundary layer, of the centre of the calculation grid cell closest to the bottom, in order to correctly simulate the height of the breaking waves.

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A 3D shock-capturing model for free surface flow

Cited by 6 publications

References 13 publications

Numerical investigation of the three-dimensional velocity fields induced by wave-structure interaction

Numerical investigation of the three-dimensional velocity fields induced by wave-structure interaction

A 3D Numerical Model for Turbidity Currents

Boundary Conditions for the Simulation of Wave Breaking

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