Direct numerical simulation of transitional pulsatile stenotic flow using Lattice Boltzmann Method

1 Simulation Techniques and Scientific Computing, University of Siegen, Siegen, Germany
2 Center for Biomedical Computing, Simula Research Laboratory, Lysaker, Oslo, Norway
DOI
10.7287/peerj.preprints.1548v2
Published
Accepted
Subject Areas
Computational Biology, Neurology, Computational Science
Keywords
Stenosis, transitional flow, lattice Boltzmann Method, Kolmogorov microscales
Copyright
© 2015 Jain
Licence
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ PrePrints) and either DOI or URL of the article must be cited.
Cite this article
Jain K. 2015. Direct numerical simulation of transitional pulsatile stenotic flow using Lattice Boltzmann Method. PeerJ PrePrints 3:e1548v2

Abstract

In the present work, I perform direct numerical simulations of pulsatile flow through a 75% eccentric stenosis using the Lattice Boltzmann Method. The stenosis was studied by Varghese et al. (2007b) in a benchmark computation and the goal of this work is to validate the LBM solver Musubi for transitional flows in anatomically realistic geometries. Whereas most of the study reproduces and compares simulation results from Musubi against the benchmark, the latter part quantifies the Kolmogorov micro-scales and discusses the role of space and time resolutions for the simulation of a transitional flow. The LBM results show an excellent agreement with the previously published results thereby increasing confidence on our Musubi solver for the simulation of transitional flows. The aim of this study is not to compare the computational efficiency of the code or the method but only the physics of the flow.

Author Comment

This updated version has minor changes.