Numerical investigation of oscillatory multiphase flow in porous medium with chemically active skeleton

31st International Conference on Equations of State for Matter

Konyukhov, A.V.^1,2 ; Zavialov, I.N.^2

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^1

Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, Dolgoprudny, Moscow Region

141700, Russia^2

关键词: Active components;    Gaseous phase;    Immiscible displacement;    Numerical investigations;    Oscillatory mode;    Reaction front;    Reactive flow;    Self-oscillating;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012059/pdf
DOI  :  10.1088/1742-6596/774/1/012059

来源: IOP

【 摘 要 】

Self-oscillating mode of reaction front propagation in multiphase flow in the porous medium with chemically active skeleton is investigated numerically. The considered flow represents an immiscible displacement process, such that the displacing fluid and the skeleton of the porous medium have chemically active components which react with production of gaseous phase. The calculations have demonstrated strong influence of the reaction kinetics on stability of the reactive flow. The presence of a time delay between the change of concentration of the reactants and the change of the reaction rate is shown to stimulate transition of the reaction front propagation to the oscillatory mode.