Research Article
Numerical Validation of Analytical Estimates for Propagation of Thermal Waves Generated by Gas-Solid Combustion
Table 1
Dimensional parameters for ISC and their typical values.
| | Symbol | Description | Value | Unit |
| | Ideal gas constant | 8.314 | J/(mol⋅K) | | Heat capacity of the rock | 2 × 106 | J/(m3⋅K) | | Specific heat capacity of the gas | 27.42 | J/(mol⋅K) | | Thermal conductivity of the medium | 0.87 | J/(m⋅s⋅K) | | Heat released due to combustion | 4 × 105 | J/mol | | Porosity of the medium | 0.3 | ⋅ | | Molecular diffusion coefficient | 2 × 10−6 | m2/s | | Preexponential factor | 500 | 1/s | | Activation energy | 58000 | J/mol | | Atmospheric pressure | 1 | atm | | Initial temperature of the reservoir | 370 | K | | Molar fraction of oxygen in the air | 0.21 | ⋅ | | Initial molar concentration of fuel | 372 | mol/m3 | | Reference pressure in reservoir | 1 | atm | | Average permeability of the medium | 10−12 | m2 | | Average gas viscosity | 2 × 10−5 | Pa⋅s |
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