Preferential Vaporization Effects on the Droplet Burning and Lift-off Behaviors of Jet Fuel Surrogates

2022 ◽  
Author(s):  
Christopher B. Reuter ◽  
Tanvir I. Farouk ◽  
Steven G. Tuttle
Keyword(s):  
Jet Fuel ◽  
Lift Off ◽  
Author(s):  
Teresa A. Wierzbicki ◽  
Ivan C. Lee ◽  
Ashwani K. Gupta

Oxidation behavior of dodecane and two mixtures of dodecane and m-xylene (90/10 wt. % and 80/20 wt. %) over an Rh catalyst in a meso-scale heat recirculating combustor was examined to isolate the effect of aromatic content on performance. The fuel conversion, product speciation and reaction kinetics were calculated, and the global combustion behavior observed. The results showed that increasing the amount of m-xylene in the fuel increased the fuel conversion from 85% (pure dodecane) to 92% (90/10) and further to 98% (80/20). The presence of xylene also significantly increased CO2/H2O selectivity and de-creased CO/H2 selectivity. Global activation energy increased linearly with increase in xylene content, supporting that addition of aromatic species to fuel lowers the overall reactivity. The non-catalytic reaction was also simulated using Chemkin software to determine the effect of the Rh catalyst on the combustor performance. The results revealed that the catalyst promotes total oxidation over partial oxidation, and lowers the global activation energy by up to 70%.


2015 ◽  
Vol 145 ◽  
pp. 1-7 ◽  
Author(s):  
Teresa A. Wierzbicki ◽  
Ivan C. Lee ◽  
Ashwani K. Gupta

2007 ◽  
Vol 164 (1) ◽  
pp. 344-350 ◽  
Author(s):  
Benjamin D. Gould ◽  
Andrew R. Tadd ◽  
Johannes W. Schwank

2016 ◽  
Vol 41 (5) ◽  
pp. 3701-3711 ◽  
Author(s):  
Julian N. Bär ◽  
Mauro Iurk Rocha ◽  
Edimilson Jesus de Oliveira ◽  
Olaf Deutschmann

2017 ◽  
Vol 121 (6) ◽  
pp. 1261-1280 ◽  
Author(s):  
Long Zhao ◽  
Tao Yang ◽  
Ralf I. Kaiser ◽  
Tyler P. Troy ◽  
Musahid Ahmed ◽  
...  

1997 ◽  
Vol 119 (1) ◽  
pp. 45-48
Author(s):  
P. Samuel ◽  
G. A. Karim

The lift-off of jet diffusion flames of a liquid fuel in coflowing streams of air was established experimentally for a range of jet discharge and stream velocities. The improvement in the lift-off stability of the flame due to the presence of a small concentration of an auxiliary gaseous fuel in the surrounding air was established. Liquid n-heptane was the jet fuel while methane, ethylene, propane, and hydrogen were employed individually in small concentrations as the auxiliary fuels. It is shown that the lift-off distance and the corresponding ignition delay of the jet flame can be correlated for all the observations made in terms of derived dimensionless grouping of the main parameters varied, which included the jet discharge velocity, the surrounding stream velocity, and the concentration of the fuel added to the surroundings of the flame.


2017 ◽  
Vol 121 (6) ◽  
pp. 1281-1297 ◽  
Author(s):  
Long Zhao ◽  
Tao Yang ◽  
Ralf I. Kaiser ◽  
Tyler P. Troy ◽  
Musahid Ahmed ◽  
...  

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