Alfons G. Hoekstra*
Section Computational Science, Faculty of Science, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands
ABSTRACT
An overview is presented of our work on the D3Q19 Lattice-BGK model for the simulation of pulsatile blood flow. First, a set of benchmark results for pulsatile flow in a tube in the relevant range of Reynolds and Womersley numbers is presented, leading to the conclusion that the Lattice Boltzmann method is a robust, accurate and efficient flow solver for this specific application. Moreover, an example of simulation of systolic flow in the lower abdominal aorta of a volunteer is presented. The L-BGK simulations show all complex fluid flow phenomena as reported in earlier studies, such as regions of low and oscillatory shear stress, back-flow regions, and vortex rings.
Keywords:
Computational hemodynamics; Lattice Boltzmann method; Abdominal aorta