Assessing the operation impact of thermal power plants on the environment by mathematical modeling method
Keywords:
stratified environment, Navier-Stokes equations, operational capacity, Ekibastuz GRES-2, finite volume method, Runge-Kutta method, Shandaksor lakeAbstract
The paper presents an assessment of the operation impact of thermal power plants on the environment by mathematical modeling method, which is solved by the Navier - Stokes and temperature equations for an incompressible fluid in a stratified medium, based on the projection method which are approximated by control volume method. A numerical algorithm for solving the Navier-Stokes and the temperature transport equations are as follows: in the first stage it is assumed that the transfer of momentum is carried out only by convection and diffusion. The intermediate velocity field is solved by 5-step Runge - Kutta method. In the second stage, based on the found intermediate velocity field, is solved the pressure field. Poisson equation for the pressure field is solved by Jacobi method. In a third step it is assumed that the transfer is carried out only by the pressure gradient. The fourth step numerically solved temperature transfer equation as the momentum equation by 5-step Runge - Kutta method. The algorithm is parallelized on high-performance systems. The obtained numerical results of three-dimensional stratified turbulent flow reveals qualitatively and quantitatively approximate the basic laws of hydrothermal processes occurring in the aquatic environment.
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