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MRT discrete Boltzmann method for compressible exothermic reactive flows

Lin, C; Luo, KH; (2018) MRT discrete Boltzmann method for compressible exothermic reactive flows. Computers and Fluids , 166 pp. 176-183. 10.1016/j.compfluid.2018.02.012. Green open access

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Abstract

An efficient, accurate and robust multiple-relaxation-time (MRT) discrete Boltzmann method (DBM) is proposed for compressible exothermic reactive flows, with both specific heat ratio and Prandtl number being flexible. The chemical reaction is coupled with the flow field naturally and the external force is also incorporated. An efficient discrete velocity model which has sixteen discrete velocities (and kinetic moments) is introduced into the DBM. With both hydrodynamic and thermodynamic nonequilibrium effects under consideration, the DBM provides more detailed and accurate information than traditional Navier–Stokes equations. This method is suitable for fluid flows ranging from subsonic, to supersonic and hypersonic ranges. It is validated by various benchmarks.

Type: Article
Title: MRT discrete Boltzmann method for compressible exothermic reactive flows
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.compfluid.2018.02.012
Publisher version: http://doi.org/10.1016/j.compfluid.2018.02.012
Language: English
Additional information: Copyright © The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://www.creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed
Keywords: Discrete Boltzmann, Lattice Boltzmann, Nonequilibrium, Compressible, Reactive flows
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10046452
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