Mechanical Engineering Commons^™

A high pressure laminar flow reactor facility (HPLFR) was designed and constructed to serve as a platform for the experimental study of the gas phase chemistry of small molecule species. This facility accommodates pressures from slightly above atmospheric to ~30 atm, temperatures from ambient to ~1000 K, and plug flow residence times on the order of 100 milliseconds to 10 seconds. Quasi-steady state NOx plateau (QSSP) experiments were conducted in the newly-constructed HPLFR to determine rate coefficients for the reaction H+O2(+M)↔HO2(+M) (H.9.M) relative to the reasonably well-known rate coefficient for H+NO2↔OH+NO. Initial experiments for M = Ar and N2, for …

Over a broad range of conditions and experimental configurations, recent experimental work has shown quantitative similarities between the pre-vaporized combustion behaviors of iso-dodecane (iC12: 2,2,4,6,6-pentamethylheptane), iso-octane (iC8: 2,2,4-trimethylpentane), iso-cetane (iC16: 2,2,4,4,6,8,8-heptamethylnonane), and a 50/50 (molar) iC8/iC16 mixture. Such similarity – typically within experimental uncertainties – suggests that these fuels share a significant subset of combustion chemistry related to fuel destruction into nearly equal fluxes of iso-C4 fragments. This proposition is used to develop a compact (43 species) kinetic model to describe iC12 combustion by using detailed chemistry models for iC16 and iC8, since at present, no detailed iC12 oxidation model …