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Simulation of Turbulent Flows Using a Finite-Volume Based Lattice Boltzmann Flow Solver

Published online by Cambridge University Press:  28 November 2014

Goktan Guzel*
Affiliation:
ASELSAN Inc, MGEO Division, Etlik 06011, Ankara, Turkey
Ilteris Koc
Affiliation:
ASELSAN Inc, MGEO Division, Etlik 06011, Ankara, Turkey
*
*Email addresses:goguzel@aselsan.com.tr(G. Guzel), ikoc@aselsan.com.tr(I. Koc)

Abstract

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In this study, the Lattice Boltzmann Method (LBM) is implemented through a finite-volume approach to perform 2-D, incompressible, and turbulent fluid flow analyses on structured grids. Even though the approach followed in this study necessitates more computational effort compared to the standard LBM (the so called stream and collide scheme), using the finite-volume method, the known limitations of the stream and collide scheme on lattice to be uniform and Courant-Friedrichs-Lewy (CFL) number to be one are removed. Moreover, the curved boundaries in the computational domain are handled more accurately with less effort. These improvements pave the way for the possibility of solving fluid flow problems with the LBM using coarser grids that are refined only where it is necessary and the boundary layers might be resolved better.

Information

Type
Research Article
Copyright
Copyright © Global Science Press Limited 2015