چكيده به لاتين
The knowledge of combustion is important because of the undeniable dependence of human life on energy supply. One of the most important sources of burning energy has long been provided. Many researchers have been involved in understanding and controlling combustion for optimal and safe use of combustion.In this study, an introduction to carbon particle combustion and the introduction of an edge flame are first discussed. Following is a brief overview of the work done and the research vacuum of carbon combustion and a historical overview of carbon combustion, which was discussed in various environments such as carbon dioxide, nitrogen and argon. It also reviews the research in the field of edge combustion. In the following, the multi-stage edge combustion cloud particles modeling using parabolic-cylindrical coordinates is discussed and the effect of fuel type change on the triple flame propagation velocity considering the heat exchange between the particle and the gas in the precursor region is considered; Applying the effects of particle disruption to the precursor region for both uniform and random particle distribution modes, the temperature change profiles of the particles are obtained. Next, the multi-stage non-premixed combustion cloud particles modeling of high-grade coal particles such as anthracite in non-adiabatic mode is discussed. In this study, the effects of thermal dissipation, assuming pyrolysis and drying steps in a finite area, were investigated and the equations of mass fraction of gaseous, solid fuel, oxidant and energy survival were solved. In addition, a detailed study on unsteady and oscillating multi-stage non-premixed combustion cloud particles of high-altitude coal particles such as anthracite was carried out, in which temperature and position of flame formation depend on the effect of time on combustion, changes in fuel and oxidant Lewis numbers and spatial variations. The volatile combustion stages were plotted and the trends of changes in position and temperature of the combustion stages such as drying and pyrolysis were determined according to the above parameters. Also, the effect of thermophoresis force on non-premixed multistage combustion of high-grade coal particles such as anthracite in steady-state and unsteady is investigated and the effects of particle size, Lewis fuel and oxidant numbers on thermophoresis force are investigated. Finally, using the Lagrangian approach, by writing momentum equations for a single particle, the trajectory of the particle is obtained.
