On Numerical Modeling of Combustion and Other Energy Release in Porous Objects

Abstract eng:
The work is devoted to the numerical modeling of heterogeneous combustion and other energy sources in porous objects with self-regulation of flow rate of the gas passed through the object. Such porous objects can arise from various natural or man-made disasters like self-ignition of peatlands or solid waste dumps, explosions at industrial or energy plants. Mathematical models and original numerical algorithms have been developed for the investigation of unsteady heterogeneous combustion of porous two-dimensional objects with one- step chemical kinetics and time-dependent regimes of gas flow through three-dimensional porous objects with sources of energy release without detailed chemical kinetics; some 2D and 3D time-dependent problems have been solved numerically. It has been shown that the combustion waves can move complicatedly; the gas flows inside of the porous object can be complex. When the natural convection takes place, the vortex-type gas flows can occur in the combustion zone and in its vicinity.

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