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Effects of pressure and impingement angle in flaming processes
Authors:Harilaos H Liakos  Maria K Koukou  Nikolaos C Markatos  Maria A Founti
Abstract:This work investigates the effects of varying the pressure of the mixture reactants and the angle of impingement on the performance characteristics of a turbulent premixed jet flame impinging on a solid surface. These effects are important for the design of torches and flaming machines used for material and metal cutting and forming. The combustion and flow characteristics are modelled using a finite volume computational approach. Based on the simulation results, it is shown that, by increasing the pressure of the mixture reactants, the flame‐surface interaction mechanisms are modified. Changing the impingement angle increases the role of chemical kinetics and reduces maximum temperature values due to increased local flame extinction. The heat released and temperature predictions are compared to experimental data and the agreement is satisfactory.
Keywords:premixed flames  pressure  mixing  chemical kinetics  flaming processes
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