DOI: 10.1615/TSFP1
EXPERIMENTAL CHARACTERISATION OF AN OSCILLATING REACTING SHEAR LAYER
要約
An unsteady propane-air premixed flame stabilised in a bluff-body is investigated, in particular the reacting shear layer close to the burner base bounded by central recirculation zone, with hot products, and non-reacting vortex shedding. The flow field oscillates with frequency of 275Hz and the unsteady process is driven by an acoustic standing half-wave accommodated inside the upstream pipe. Optical and probe techniques, such as laser velocimetry, digitally-compensated thermocouples, chemiluminiscent sensor for