Scientia Iranica

Scientia Iranica

Finite Volume - Lattice Boltzmann Modeling of Time Dependent Flows

Authors
1 Department of Engineering, Science and Research Branch, Islamic Azad University, Fars, Iran
2 Department of Mechanical Engineering, The University of Yasouj, Yasouj, Iran
Abstract
In this paper, a stable finite volume formulation of lattice Boltzmann method is used to study time dependent flows. For simulation purpose, a cell-centered scheme is implemented to discretize the convection operator and weighting factors are used as flux correctors to enhance the stability. Also, additional lattices at the edge of each boundary cell are used, which allow a much better description of the actual geometrical shape. Compared with previous finite volume formulations, the proposed approach resulted in a wider domain of stability and faster convergence. The scheme is validated through simulations on flow over circular cylinder and mixing layer flow. The results show that the method is a promising scheme in simulating time dependent flows.
Keywords

Volume 20, Issue 6 - Serial Number 12
Transactions on Mechanical Engineering (B)
December 2013
Pages 1812-1823

  • Receive Date 05 August 2013
  • Accept Date 27 July 2017