Graphene oxide in gaseous jet A-1/air combustion wave

This study aimed to investigate the feasibility of application of Graphene oxide (GO) nanosheets to Jet A-1 to enhance its combustion performance in air, such as the ignition delay of deflagration, the flame speed and the shock induced reaction flow. Firstly, the preparation and synthesis of GO nanoparticles and their dispersibility in Jet A-1 fuel is reported. The crumpling behavior of GO in Jet A-1 fuel, and the investigation of the effect of the inclusion of GO nanosheets in Jet A-1 fuel on initial deflagration development are then presented. The results indicate that a longer vaporization duration of Jet A-1 or a higher chamber temperature results in smaller and more densely crumpled GO particles which retain high surface area as a potential micro-catalyst for enhancing combustion reactions. From Schlieren photography, the initial deflagration test of GO-Jet A-1 mixtures demonstrates that the addition of GO nanosheets accelerates the initial linear burning velocity and reduces the ignition delay times. For 17.9% Jet A-1 in air, the addition of GO (2mg/ml) increases the initial linear burning velocity from 4.52 m/s to 5.15 m/s (13.8%) and reduces the ignition delay times from 8.195 ms to 3.045 ms (62.8%). The effect of GO on high-speed shock induced reaction flow was also tested. The addition of GO causes a significant decrease in the strength and speed of the initial transmitted wave. However, a higher pressure peak was observed when the wave propagates downstream due to the addition of GO.