The effects of pressure,temerpature,and ocncentration on the reactivity of alkanes: experiments and modeling in a rapid compression machine

摘要

Expeiments in a rapid ocmpression machine have examined the influences of variations in pressure,temerpature,and equivalence ratio on the autoignaition of n-pentane.Equivalence ratios included values from 0.5 to 2.0,compressed gas initial temerpatures were varied between 675 and 980 K,and compressed gas inital pressures varied from 8 to 20 bar.Numerical simulations of the same expeirments were carried out using a detailed chemical kinetic reaction mechanism.The results are interpreted in terms of a low-temeprature oxidation mechanism involving addition of molecular oxygen to alkyl and hydroperoxyalkyl radicals.