چكيده به لاتين
In recent decades, with remarkable advancements in the field of science and technology, the conversion of energy from fossil fuels (such as coal and natural gas) has become one of the most influential factors in the economic and social development of societies. Therefore, in this thesis, an attempt has been made to investigate the combustion modeling of discrete particle clouds of three fuels: coal, aluminum, and lycopodium, with different molar percentages, aiming to improve fuel efficiency. "Tripartite fuel" means the simultaneous use of three primary sources of energy for enhanced energy production and efficiency. Here, a combination of 70% Lycopodium, 20% coal, and 10% aluminum has been used to achieve higher yield. At the beginning of the study process, the historical background and combustion processes of these three types of particles will be analyzed. In this stage, the combustion mechanisms of these three fuels will be examined in detail. The research continues with the presentation and examination of three types of modeling: limiting modeling, semi-limiting modeling, and discrete modeling. These novel models provide a better interpretation of fuel behaviors and enhance the weaknesses of previous models. At this stage, the comprehensive study and analysis of factors such as particle diameter, combustion speed, cloud particle concentration, and required energy for the combustion process will be conducted. In the final chapter, the dynamic behavior of particle movement under the influence of thermophoretic force and other factors will be discussed. In conclusion, it is determined that by combining different types of fuels, combustion speed and duration can be improved. Additionally, this fuel combination can reduce flame temperature throughout the combustion process and provide optimal results under various conditions. For instance, reducing the aluminum contribution percentage from 33% to 10% in the ternary fuel leads to an 8% decrease in combustion temperature. In the realm of discrete combustion, it has been observed that the flame extinction limit is a function of particle diameter, and in larger diameters, the ignition range occurs at higher concentrations of cloud particles.
