Convective instability in porous media with throughflow

AIChE Journal ◽  
1987 ◽  
Vol 33 (7) ◽  
pp. 1222-1224 ◽  
Author(s):  
D. A. Nield
Keyword(s):  
Porous Media ◽  
Convective Instability

scholarly journals Convective Instability of Reaction Fronts in Porous Media

2007 ◽  
Vol 2 (2) ◽  
pp. 20-39 ◽  
Author(s):  
K. Allali ◽  
A. Ducrot ◽  
A. Taik ◽  
V. Volpert
Keyword(s):  
Porous Media ◽  
Convective Instability ◽  
Reaction Fronts

scholarly journals Propagation of Reaction Front in Porous Media with Natural Convection

2019 ◽  
Vol 8 (12) ◽  
pp. 5336-5341
Keyword(s):  
Porous Media ◽  
Natural Convection ◽  
Dispersion Relation ◽  
Convective Instability ◽  
Reaction Front ◽  
Front Propagation ◽  
Boussinesq Approximation ◽  
Motion Equations ◽  
Darcy Equation ◽  
Number Increase

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.

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