Study on buoyant instabilities of high pressures laminar jet flames
Laminar diffusion jet flames are subjected to buoyant instabilities when the Froude number is lower than a critical value. In the present work, a numerical study on syngas laminar jet diffusion flames at elevated pressures (1, 2, 4, 8 and 12 bar) and buoyant instabilities is presented. Since the Reynolds number is kept constant, the velocity and Froude number diminish as pressure is increased. For pressures from 1 to 4 bar the flames display a steady behavior with a progressive reduction of the thickness, while for 8 and 12 bar the flames oscillate and pulsate.