@Article{AAMM-9-1271, author = {Murdock , J. R.Ickes , J. C. and Yang , S. L.}, title = {Transition Flow with an Incompressible Lattice Boltzmann Method}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2018}, volume = {9}, number = {5}, pages = {1271--1288}, abstract = {

Direct numerical simulations of the transition process from steady laminar to chaotic flow are considered in this study with the relatively new incompressible lattice Boltzmann equation. Numerically, a multiple relaxation time fully incompressible lattice Boltzmann equation is implemented in a 2D driven cavity. Spatial discretization is 2nd-order accurate, and the Kolmogorov length scale estimation based on Reynolds number ($Re$) dictates grid resolution. Initial simulations show the method to be accurate for steady laminar flows, while higher $Re$ simulations reveal periodic flow behavior consistent with an initial Hopf bifurcation at $Re$ 7,988. Non-repeating flow behavior is observed in the phase space trajectories above $Re$ 13,063, and is evidence of the transition to a chaotic flow regime. Finally, flows at Reynolds numbers above the chaotic transition point are simulated and found with statistical properties in good agreement with literature.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.OA-2016-0103}, url = {http://global-sci.org/intro/article_detail/aamm/12200.html} }