A 3D Numerical Model for Turbidity Currents

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.

3D visualization of the results of using modern OFA technology on the example of real boiler

“…Numerical studies of heat and mass transfer processes were carried out using three-dimensional equations of convective heat and mass transfer taking into account convective and radiative heat transfer, chemical kinetics, and two-phase nature of the medium. All these nonlinear equations include the law of conservation of mass, the law of conservation of momentum (Navier-Stokes equation), the law of conservation of energy and the law of conservation of matter [15][16][17][18]. In this study, the object of study was the furnace chamber of the boiler BKZ-75-39FB, located at the thermal station of the city of Shakhtinsk in Kazakhstan.…”