A lattice Boltzmann model for diffusion of binary gas mixtures that includes diffusion slip

2011 ◽  
Vol 69 (1) ◽  
pp. 171-189 ◽  
Author(s):  
Sam Bennett ◽  
Pietro Asinari ◽  
Paul J. Dellar
Keyword(s):  
Lattice Boltzmann ◽  
Gas Mixtures ◽  
Lattice Boltzmann Model ◽  
Diffusion Slip ◽  
Boltzmann Model

scholarly journals A lattice Boltzmann model for reactive mixtures

2021 ◽  
Vol 379 (2208) ◽  
pp. 20200402 ◽  
Author(s):  
N. Sawant ◽  
B. Dorschner ◽  
I. V. Karlin
Keyword(s):  
Lattice Boltzmann ◽  
Three Dimensional ◽  
Gas Mixtures ◽  
Heat Of Formation ◽  
Species Interaction ◽  
Ideal Gas ◽  
Lattice Boltzmann Model ◽  
Dynamics Simulation ◽  
Mixture Composition ◽  
Boltzmann Model

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’.

Hybrid lattice Boltzmann model for atmospheric flows under anelastic approximation

2021 ◽  
Vol 33 (3) ◽  
pp. 036607
Author(s):  
Y. Feng ◽  
J. Miranda-Fuentes ◽  
J. Jacob ◽  
P. Sagaut
Keyword(s):  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Atmospheric Flows ◽  
Boltzmann Model
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