Premixed flames propagating freely in tubes

Christophe Almarcha (1) , Bruno Denet (1) , Joel Quinard (1)

1 IRPHE - Institut de Recherche sur les Phénomènes Hors Equilibre

This paper reports an experimental investigation of premixed propane and methane-air flames propagating freely in tubes 1.5 m long and with diameters 54 and 94 mm. Two regimes of propagation are distinguished by correlating the flame speed and the radius of curvature at the flame tip. The characteristic lengths are then related to the cut-off wavelengths estimated from linear theories and compared to previous results of Michelson-Sivashinsky simulations.

Domaines: Milieux fluides et réactifs; Mécanique des fluides [physics.class-ph]

Christophe Almarcha, Bruno Denet, Joel Quinard. Premixed flames propagating freely in tubes. Combustion and Flame, 2015, 162 (4), pp.1225-1233. ⟨10.1016/j.combustflame.2014.10.010⟩. ⟨hal-01216525⟩