Detonations in hydrocarbon fuel blends

Detonations in Hydrocarbon Fuel Blends

A study of detonations in high-molecular weight hydrocarbon fuels of interest to pulse detonation engine applications was performed in a 280 mm diameter, 7.3 m long facility. Detonation pressure, wave speed, and cell width measurements were made in JP-10 mixtures and in mixtures representative of the decomposition products of JP-10. Experiments were performed in vapor-phase JP-10 mixtures at 35...

Detonations in Hydrocarbon Fuel Blends

A study of detonations in high molecular weight hydrocarbon fuels was performed in two GALCIT facilities: the 280 mm gaseous detonation tube (GDT) and a 1180 liter vessel (HYJET) with jet initiation capability. In the GDT, detonation pressure, wave speed and cell width measurements were made in hexane-oxygen-nitrogen mixtures with and without the addition of lower molecular weight fuels. Stoich...

Direct hydrocarbon solid oxide fuel cells.

Accurate Estimates of Fine Scale Reaction Zone Thicknesses in Hydrocarbon Detonations

Fully resolved predictions of steady, one-dimensional detonations near the ChapmanJouguet state in mixtures of methane-air and methane-oxygen-argon are presented. The model is restricted to inviscid continuum mixtures of calorically imperfect ideal gases described by detailed Arrhenius kinetics. Consistent with estimates from an underlying molecular collision theory, an eigenvalue analysis of l...

Dynamic investigation of hydrocarbon proton exchange membrane Fuel Cell

Sulfonated polyether ether ketone (SPEEK) is categorized in a nonfluorinated aromatic hydrocarbon proton exchange membrane (PEM) group and considered as a suitable substitute for common per-fluorinated membranes, such as Nafion, due to wider operating temperature, less feed gas crossover, and lower cost. Since modeling results in a better understanding of a phenomenon, in this study a dynamic o...