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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-431-1

ISBN Online: 978-1-56700-430-4

First Thermal and Fluids Engineering Summer Conference
August, 9-12, 2015 , New York City, USA

Mass Balance in Velocity Dirichlet Boundary Conditions for Lattice Boltzmann Method

Get access (open in a dialog) pages 383-395
DOI: 10.1615/TFESC1.cmd.013235


Many different methods can be used to treat open boundary conditions in lattice Boltzmann method. Zou-He method, finite difference velocity gradient method, and regularized method are reviewed and compared for velocity Dirichlet condition for Poiseuille flow with different Reynolds numbers. Using same convergence criterion, all the numerical procedures are carried on till steady-states are reached. The obtained velocities and pressures are compared with analytical solutions and mass balances for different methods are also checked. The results indicates all the numerical results agree with analytical solutions well and Zou-He method results satisfy the mass balance better than the others.