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Simulations of time harmonic blood flow in the Mesenteric artery: comparing finite element and lattice Boltzmann
Lilit Axner1, Alfons G Hoekstra, Adam Jeays
1Section Computational Science, Laboratory for Computing, System Architecture and Programming, Faculty of Science, University of Amsterdam, Science Park 107, 1098 XG Amsterdam, The Netherlands. labraham@science.uva.nl
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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