Simulating time harmonic flows with the regularized L-BGK method

Simulating time harmonic flows with the regularized L-BGK method

A recent improvement of the lattice BGK model, based on a regularization of the precollision distribution function, is applied to three dimensional Womersley flow. The accuracy and the stability of the model are essentially improved by using this regularization. A good agreement with analytical Wome...

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Main Authors: Axner, Lilit, Latt, Jonas, Hoekstra, Alfons G., Chopard, Bastien, Sloot, Peter M. A.
Other Authors: School of Computer Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96039
http://hdl.handle.net/10220/10129
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Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-96039
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spelling sg-ntu-dr.10356-960392020-05-28T07:19:06Z Simulating time harmonic flows with the regularized L-BGK method Axner, Lilit Latt, Jonas Hoekstra, Alfons G. Chopard, Bastien Sloot, Peter M. A. School of Computer Engineering A recent improvement of the lattice BGK model, based on a regularization of the precollision distribution function, is applied to three dimensional Womersley flow. The accuracy and the stability of the model are essentially improved by using this regularization. A good agreement with analytical Womersley solution is presented, as well as an improvement of the accuracy over standard L-BGK. Numerical stability of the scheme for a range of Reynolds and Womersley numbers is also presented, demonstrating an enhancement of the stability range of L-BGK for this type of flows. 2013-06-10T07:40:56Z 2019-12-06T19:24:47Z 2013-06-10T07:40:56Z 2019-12-06T19:24:47Z 2007 2007 Journal Article Axner, L., Latt, J., Hoekstra, A. G., Chopard, B., & Sloot, P. M. A. (2007). Simulating time harmonic flows with the regularized L-BGK method. International Journal of Modern Physics C, 18(4), 661-666. https://hdl.handle.net/10356/96039 http://hdl.handle.net/10220/10129 10.1142/S0129183107010917 en International journal of modern physics C © 2007 World Scientific Publishing Company.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description A recent improvement of the lattice BGK model, based on a regularization of the precollision distribution function, is applied to three dimensional Womersley flow. The accuracy and the stability of the model are essentially improved by using this regularization. A good agreement with analytical Womersley solution is presented, as well as an improvement of the accuracy over standard L-BGK. Numerical stability of the scheme for a range of Reynolds and Womersley numbers is also presented, demonstrating an enhancement of the stability range of L-BGK for this type of flows.
author2 School of Computer Engineering
author_facet School of Computer Engineering
Axner, Lilit
Latt, Jonas
Hoekstra, Alfons G.
Chopard, Bastien
Sloot, Peter M. A.
format Article
author Axner, Lilit
Latt, Jonas
Hoekstra, Alfons G.
Chopard, Bastien
Sloot, Peter M. A.
spellingShingle Axner, Lilit
Latt, Jonas
Hoekstra, Alfons G.
Chopard, Bastien
Sloot, Peter M. A.
Simulating time harmonic flows with the regularized L-BGK method
author_sort Axner, Lilit
title Simulating time harmonic flows with the regularized L-BGK method
title_short Simulating time harmonic flows with the regularized L-BGK method
title_full Simulating time harmonic flows with the regularized L-BGK method
title_fullStr Simulating time harmonic flows with the regularized L-BGK method
title_full_unstemmed Simulating time harmonic flows with the regularized L-BGK method
title_sort simulating time harmonic flows with the regularized l-bgk method
publishDate 2013
url https://hdl.handle.net/10356/96039
http://hdl.handle.net/10220/10129
_version_ 1681056304369500160

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