Open AccessPropagation of Reaction Front in Porous Media with Natural Convection
Author(s) -
Khalfi Oussama*,
Karam Allali
Publication year - 2019
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.l3963.1081219
Subject(s) - porous medium , front (military) , compressibility , mechanics , convection , natural convection , dispersion relation , instability , convective instability , stability (learning theory) , boussinesq approximation (buoyancy) , physics , thermodynamics , porosity , materials science , mathematics , geology , meteorology , rayleigh number , computer science , geotechnical engineering , optics , machine learning
This paper examines the influence of convective instability on the reaction front propagation in porous media. The model includes heat and concentration equations and motion equations under Boussinesq approximation. The non-stationary Darcy equation is adopted and the fluid is supposed to be incompressible. Numerical results are performed via the dispersion relation. The simulations show that the propogating reaction front loses stability as Vadasz number increase, it shows also more stability is gained when Zeldovich number increased.