DIRECT NUMERICAL SIMULATION (DNS) OF TURBULENT FLOWS BY USING PARALLEL TECHNOLOGY
Keywords:
Direct numerical simulation, Navier-Stokes equations, finite volume method, parallel technologies, domain decomposition, kinetic energy, turbulenceAbstract
This paper presents direct numerical simulation (DNS) of three-dimensional unsteady turbulent incompressible flows based on the integral conservation laws of the Navier-Stokes equations. Equation discretization is implemented using the finite volume method on regular and irregular computational grids, allowing for efficient cell condensation in zones with large gradients of hydrodynamic parameters. The numerical algorithm is based on a splitting scheme based on physical factors, employing the five-stage Runge-Kutta method for the velocity field and the Jacobi method for the Poisson equation. Parallel computing technology based on two-dimensional decomposition of the computational domain is employed to accelerate the calculations.
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