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.

A 3D numerical model for turbidity currents / Cannata, G.; Barsi, L.; Tamburrino, M.. - In: WSEAS TRANSACTIONS ON FLUID MECHANICS. - ISSN 1790-5087. - 15:(2020), pp. 1-12. [10.37394/232013.2020.15.1]

A 3D numerical model for turbidity currents

Cannata G.
Primo
;
Tamburrino M.
2020

Abstract

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.
2020
turbidity current; two-phase flow; free-surface flow; numerical model; time-varying coordinates
01 Pubblicazione su rivista::01a Articolo in rivista
A 3D numerical model for turbidity currents / Cannata, G.; Barsi, L.; Tamburrino, M.. - In: WSEAS TRANSACTIONS ON FLUID MECHANICS. - ISSN 1790-5087. - 15:(2020), pp. 1-12. [10.37394/232013.2020.15.1]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1674249
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