The simultaneous measurements of velocity, pressure, temperature and heat release in an oscillating flame

Optical and probe techniques are used for the analysis of the coupling mechanisms between pressure, velocity and heat release fluctuations typical of pulsed flames, through the combination of laser velocimetry, digitally-compensated thermocouples, chemiluminiscent emissions of free radicals in the flames, and the pressure oscillations is the upstream flows. The results quantify the periodic nature of the mixing process and characterize the momentum and heat flux fluctuations along a cycle of oscillation.