Third M.I.T. Conference on Computational Fluid and Solid Mechanics June 14–17, 2005  

Image-based computational hemodynamics with the Lattice Boltzmann method

Alfons G. Hoekstra*
Section Computational Science, Faculty of Science, University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands

  Full Text
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

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