Abstract:
:A new lattice Boltzmann model for reactive ideal gas mixtures is presented. The model is an extension to reactive flows of the recently proposed multi-component lattice Boltzmann model for compressible ideal gas mixtures with Stefan-Maxwell diffusion for species interaction. First, the kinetic model for the Stefan-Maxwell diffusion is enhanced to accommodate a source term accounting for the change in the mixture composition due to chemical reaction. Second, by including the heat of formation in the energy equation, the thermodynamic consistency of the underlying compressible lattice Boltzmann model for momentum and energy allows a realization of the energy and temperature change due to chemical reactions. This obviates the need for ad-hoc modelling with source terms for temperature or heat. Both parts remain consistently coupled through mixture composition, momentum, pressure, energy and enthalpy. The proposed model uses the standard three-dimensional lattices and is validated with a set of benchmarks including laminar burning speed in the hydrogen-air mixture and circular expanding premixed flame. This article is part of the theme issue 'Progress in mesoscale methods for fluid dynamics simulation'.
journal_name
Philos Trans A Math Phys Eng Scijournal_title
Philosophical transactions. Series A, Mathematical, physical, and engineering sciencesauthors
Sawant N,Dorschner B,Karlin IVdoi
10.1098/rsta.2020.0402keywords:
["Stefan-Maxwell diffusion","circular expanding flame","detailed chemistry lattice Boltzmann","lattice Boltzmann hydrogen air","multicomponent lattice Boltzmann","reactive lattice Boltzmann"]subject
Has Abstractpub_date
2021-10-18 00:00:00pages
20200402issue
2208eissn
1364-503Xissn
1471-2962journal_volume
379pub_type
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