Detailed combustion kinetics of cyclopentadiene studied in a shock-tube

Mixtures of cyclopentadiene and oxygen diluted in argon were used to obtain ignition delay data in a single pulse shock-tube. The temperatures ranged from 1278-2110 K and the experimental pressures were between 2.43 and 12.45 atm. The fuel concentrations ranged from 0.5 to 2.5% and the oxygen concen trations were between 3.3 and 16.6%. A Semenov ignition delay expression wa s determined: tau = 10(-12.5) exp(+34500/RT) [C5H6](0.06) [O-2](-0.95) [Ar](0.29) sec The concentrations are in mol/cc and the activation energy is in cal/mol. G as-chromatographic analyses were run on samples quenched before the ignitio n. The kinetics of combustion of cyclopentadiene was modeled with a full sc heme containing 439 elementary reactions and a reduced scheme containing 12 5 reactions. Both ignition delay times and product distribution served as m odeling targets. The mechanism of combustion of cyclopentadiene is discusse d in connection to the combustion of aromatic fuels. (C) 2001 John Wiley & Sons.