TY - JOUR
T1 - Lattice BGK Model for Incompressible Axisymmetric Flows
JO - Communications in Computational Physics
VL - 5
SP - 1569
EP - 1590
PY - 2012
DA - 2012/11
SN - 11
DO - http://doi.org/10.4208/cicp.290810.050811a
UR - https://global-sci.org/intro/article_detail/cicp/7425.html
KW - 
AB - <p style="text-align: justify;">In this paper, a lattice Boltzmann BGK (LBGK) model is proposed for simulating incompressible axisymmetric flows. Unlike other existing axisymmetric lattice
Boltzmann models, the present LBGK model can eliminate the compressible effects
only with the small Mach number limit. Furthermore, the source terms of the model are
simple and contain no velocity gradients. Through the Chapman-Enskog expansion,
the macroscopic equations for incompressible axisymmetric flows can be exactly recovered from the present LBGK model. Numerical simulations of the Hagen-Poiseuille
flow, the pulsatile Womersley flow, the flow over a sphere, and the swirling flow in a
closed cylindrical cavity are performed. The results agree well with the analytic solutions and the existing numerical or experimental data reported in some previous
studies.</p>