Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Towards Flexible and Optimized Direct Numerical Simulations of Incompressible Turbulent Flows
Submission Author:
Ednir Luís Pedro Nigra Júnior , SP
Co-Authors:
Ednir Luís Pedro Nigra Júnior, Jan Armengol, Rogério Gonçalves dos Santos
Presenter: Ednir Luís Pedro Nigra Júnior
doi://10.26678/ABCM.COBEM2019.COB2019-1826
Abstract
This work aims to present an ongoing development of a high-order code capable of determining the unsteady velocity and pressure fields of incompressible turbulent flows. In the current study, a fourth-order centered finite-difference scheme is used to discretize the spatial derivatives of the incompressible Navier-Stokes equations on a collocated grid arrangement with a uniform structured mesh. An explicit fourth-order Runge-Kutta method is employed to advance in time the solution. The pressure-velocity coupling is obtained through a Poisson equation for the pressure. The Gauss-Seidel iterative method is used to solve the implicit Poisson equation. The classical laminar lid-driven cavity flow for the Reynolds number 100, 400, and 1000 is here used to assess and to verify the code. Comparisons with the results available in the literature are given. Future works are planned regarding the parallelization of this solver based on a domain decomposition using the open library PETSc.
Keywords
2D lid-driven cavity flow, high-order finite-difference method, Incompressible Navier-Stokes Equations, Poisson equation for pressure
