Effects of pressure and impingement angle in flaming processes

This work investigates the effects of varying the pressure of the mixture r eactants 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 mate rial and metal cutting and forming. The combustion and flow characteristics are modelled using a finite volume computational approach. Based on the si mulation results, it is shown that, by increasing the pressure of the mixtu re reactants, the flame-surface interaction mechanisms are modified. Changi ng the impingement angle increases the role of chemical kinetics and reduce s maximum temperature values due to increased local flame extinction. The h eat released and temperature predictions are compared to experimental data and the agreement is satisfactory.