Temporally resolved planar measurements of transient phenomena in a partially pre-mixed swirl flame in a gas turbine model combustor

Abstract

Temporally resolved planar measurements of transient phenomena in a partially pre-mixed swirl flame in a gas turbine model combustor, Combust. Flame 157 (2010)

Prediction of Global Extinction Conditions and Dynamics in Swirling Non-premixed Flames Using LES/CMC Modelling

“…Indeed, they have been observed in the measurements of the current investigated swirl flames [15] and also appears in a partially pre-mixed swirl burner [61]. In the context of the CMC model, the three-dimensional flow effects occurring between neighboring CMC cells can be predicted by the conditional convection, dilatation and sub-grid diffusion terms in Eq.…”

High-speed CH planar laser-induced fluorescence imaging using a multimode-pumped optical parametric oscillator

“…To probe electronic transitions of gasphase molecules, the use of optical parametric oscillators (OPOs) [1][2][3][4] or high-speed-pumped dye lasers [5] has been demonstrated. High-speed detection of species with mole fractions at the parts per million (ppm) level (e.g., the CH radical) necessitates the use of burst-mode-laser pump sources due to the limited availability of highspeed, short-pulse (10 ns) oscillators with sufficient perpulse laser energy.…”

Recent progress of laser metrology in chemically reacting flows at onera

“…This high temporal resolution o¨ers the possibility to visualize the turbulent combustion events that occur on the time scale of milliseconds. For instance, Boxx et al have applied 5-kilohertz OH-PLIF on lifted jet §ames and swirl stabilized §ames [19] and Hedman et al have performed 5-kilohertz OH-PLIF imaging close to the burning surface of AP/HTPB propellants [20]. The latters were able to record a sequence of several images of the combustion of a coarse AP particle at 1 atm over a time scale of 300 ms.…”