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Accuracy versus Performance in Lattice Boltzmann BGK Accuracy versus Performance in Lattice Boltzmann BGK Simulations of Systolic Flows
University of Amsterdam.ORCID iD: 0000-0002-6175-3466
2004 (English)In: Lecture Notes in Computational Science and Engineering, ISSN 1439-7358, Vol. 3039, 548-555 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this work is to tune the lattice Boltzmann BGK (LBGK) simulation parameters in order to achieve optimum accuracy and performance for. time dependent flows. We present detailed analysis of the accuracy and performance of LBGK in simulating pulsatile Newtonian flow in a straight rigid 3D tube. We compare the obtained velocity profiles and shear stress to the analytic Womersley solutions. A curved boundary condition is used for the walls and the accuracy and performance are compared to that obtained by using the bounce-back on the links. A technique to reduce compressibility errors during simulations based on reducing the Mach number is presented.

Place, publisher, year, edition, pages
2004. Vol. 3039, 548-555 p.
Keyword [en]
Lattice Boltzmann Method, Systolic Cycle, Abdominal Aorta
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-75246OAI: oai:DiVA.org:kth-75246DiVA: diva2:490364
Note

QC 20120229

Available from: 2012-02-05 Created: 2012-02-05 Last updated: 2017-12-08Bibliographically approved

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Abrahamyan, Lilit

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