A lattice Boltzmann model for reactive mixtures
| Autor: | Benedikt Dorschner, Iliya V. Karlin, N. Sawant |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Stefan-Maxwell diffusion 010304 chemical physics General Mathematics Lattice boltzmann model General Engineering reactive lattice Boltzmann multicomponent lattice Boltzmann circular expanding flame detailed chemistry lattice Boltzmann lattice Boltzmann hydrogen air General Physics and Astronomy Articles Extension (predicate logic) 01 natural sciences Ideal gas 010305 fluids & plasmas 0103 physical sciences Statistical physics Research Articles |
| Zdroj: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 379 (2208) Philosophical transactions. Series A, Mathematical, physical, and engineering sciences |
| ISSN: | 1364-503X 1471-2962 |
| Popis: | 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'. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 379 (2208) ISSN:1364-503X ISSN:1471-2962 |
| Databáze: | OpenAIRE |
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