If other fuel than hydrogen is used, the conversion reaction of methane, carbon monoxide, or other compounds should be included in the generation terms defined in (3) and (15).NomenclatureSymbolDimension????:Density (Kg/m3)????????????:Weight fraction of component ????????,????:Velocity (m/s)????:Permeability????:Pressure (Pa)????:Temperature (???K)????:Viscosity (Pa s)????:Constant of graveness (