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Simulations of time harmonic blood flow in the Mesenteric artery: comparing finite element and lattice Boltzmann methods

by: Lilit Axner, Alfons Hoekstra, Adam Jeays, Pat Lawford, Rod Hose, Peter Sloot
BioMedical Engineering OnLine, Vol. 8, No. 1. (02 October 2009), 23, doi:10.1186/1475-925x-8-23  Key: citeulike:5906156

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Abstract

BACKGROUND:Systolic blood flow has been simulated in the abdominal aorta and the superior mesenteric artery. The simulations were carried out using two different computational hemodynamic methods: the finite element method to solve the Navier Stokes equations and the lattice Boltzmann method.RESULTS:We have validated the lattice Boltzmann method for systolic flows by comparing the velocity and pressure profiles of simulated blood flow between methods. We have also analyzed flow-specific characteristics such as the formation of a vortex at curvatures and traces of flow.CONCLUSION:The lattice Boltzmann Method is as accurate as a Navier Stokes solver for computing complex blood flows. As such it is a good alternative for computational hemodynamics, certainly in situation where coupling to other models is required.


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