Mohammad Sadegh Abedinejad, Farzad Bazdidi-Tehrani, Ebrahim Sharifi-Sedeh
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引用次数: 0
Abstract
The aim of the current article is to study the combustion characteristics of the liquid fuel (Jet-A) inside a gas turbine model combustor under different conditions of the inlet air and fuel. The two-phase flow of the air and liquid droplets is modeled with the two-way coupling in the Eulerian–Lagrangian approach. The steady flamelet and discrete ordinates models are implemented to model the combustion and radiative heat transfer, successively. The \({\text{NO}}_{\text{x}}\) modeling is done as a post-process using the finite rate model. The outcomes indicate that increasing the fuel spray velocity leads to an improvement in the combustion phenomenon in the primary region, a rise in the flame temperature, and finally, a growth in the amount of \({\text{NO}}_{\text{x}}\) produced. By decreasing the half angle of fuel injection by 10°, the maximum temperature inside the combustion chamber decreases by 43 K. An increase of \(26\text{\%}\) in the inlet air temperature (from \(373\) to \(473\text{ K}\)) does not have a considerable effect on the species’ concentration distribution. However, with a \(54\text{\%}\) growth in the inlet air temperature, changes in the concentration distributions particularly in the concentration of \({\text{CO}}_{2}\) become noticeable. Enhancing the temperature of the inlet air causes a rise in the concentration of \(\text{NO}\). The concentration of \(\text{NO}\) is highly dependent on the inlet air pressure, and a direct relationship has been observed between increasing the inlet air pressure and the amount of the \(\text{NO}\) produced.
期刊介绍:
Since 1965, the international journal Acta Mechanica has been among the leading journals in the field of theoretical and applied mechanics. In addition to the classical fields such as elasticity, plasticity, vibrations, rigid body dynamics, hydrodynamics, and gasdynamics, it also gives special attention to recently developed areas such as non-Newtonian fluid dynamics, micro/nano mechanics, smart materials and structures, and issues at the interface of mechanics and materials. The journal further publishes papers in such related fields as rheology, thermodynamics, and electromagnetic interactions with fluids and solids. In addition, articles in applied mathematics dealing with significant mechanics problems are also welcome.