The University of Southampton
University of Southampton Institutional Repository

Towards a generalised lattice Boltzmann method for aerodynamic simulations

Towards a generalised lattice Boltzmann method for aerodynamic simulations
Towards a generalised lattice Boltzmann method for aerodynamic simulations
The conventional lattice Boltzmann method is restricted to Cartesian grids, making it remarkably expensive for capturing thin boundary layers, and therefore impractical for most relevant problems in aerodynamics. In this paper, a finite difference approach is taken to solve the discrete-velocity Boltzmann equation in generalised curvilinear coordinates to perform fluid flow simulations with non-uniform grids. The present method resolves large gradients in wall vicinity with fewer mesh elements, thereby leading to a reduction in computational effort. Two-dimensional flows at low Reynolds number over circular cylinder and NACA0012 aerofoil are specifically investigated to assess accuracy and performance of the proposed approach.
Curvilinear Coordinates, Finite Difference, Non-Uniform Grids
1877-7503
Reyes Barraza, Juan Antonio
5d754742-de9f-47e5-a5f1-10327f04d437
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
Reyes Barraza, Juan Antonio
5d754742-de9f-47e5-a5f1-10327f04d437
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314

Reyes Barraza, Juan Antonio and Deiterding, Ralf (2020) Towards a generalised lattice Boltzmann method for aerodynamic simulations. Journal of Computational Science, 45, [101182]. (doi:10.1016/j.jocs.2020.101182).

Record type: Article

Abstract

The conventional lattice Boltzmann method is restricted to Cartesian grids, making it remarkably expensive for capturing thin boundary layers, and therefore impractical for most relevant problems in aerodynamics. In this paper, a finite difference approach is taken to solve the discrete-velocity Boltzmann equation in generalised curvilinear coordinates to perform fluid flow simulations with non-uniform grids. The present method resolves large gradients in wall vicinity with fewer mesh elements, thereby leading to a reduction in computational effort. Two-dimensional flows at low Reynolds number over circular cylinder and NACA0012 aerofoil are specifically investigated to assess accuracy and performance of the proposed approach.

Text
paper_v5 - Accepted Manuscript
Download (11MB)

More information

Accepted/In Press date: 18 June 2020
e-pub ahead of print date: 26 June 2020
Published date: 1 September 2020
Keywords: Curvilinear Coordinates, Finite Difference, Non-Uniform Grids

Identifiers

Local EPrints ID: 442223
URI: http://eprints.soton.ac.uk/id/eprint/442223
ISSN: 1877-7503
PURE UUID: f699e969-a963-48f0-a850-1c3c5844400f
ORCID for Ralf Deiterding: ORCID iD orcid.org/0000-0003-4776-8183

Catalogue record

Date deposited: 09 Jul 2020 16:31
Last modified: 18 Jun 2022 04:01

Export record

Altmetrics

Contributors

Author: Juan Antonio Reyes Barraza
Author: Ralf Deiterding ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×