چكيده به لاتين
Because of the importance of biomass usage as a potential source of energy, this study attempts to develop a promising theoretical model for multi-zone counter-flow non-adiabatic non-premixed flame propagating. In this study, convective and radiative heat losses, thermophoresis force, flame parameters and etc are mathematically analyzed. Drying and vaporization processes for organic fuel and melting and vaporization zones for non-organic are taken into account. For organic fuel, the flame structure consists of preheat, drying, vaporization, reaction and post-flame zones and also for non-organic fuel, the flame structure consists of preheat, reaction, melting, vaporization, and post-flame zones . To obtain the mass fraction of the biofuel in solid and gaseous phases and temperature field, dimensionalized and non-dimensionalized forms of mass and energy conservation equations are derived. For solving the governing equations, appropriate boundary and jump conditions are presented using Matlab and Mathematica and Maple softwares. For validation purpose, flame position obtain from the current analysis is compared with a previous study. Based on the comparisons, current results are consistent with the previous results under the same conditions. Finally, variations of, flame temperature, solid and gaseous fuel mass fractions and particle size with position (distance from stagnation plane), thermophoresis force, flame position, mass fraction of combustion products in melting and vaporizaton processes in presence or absence of heat loss are comprehensively discussed.
