Effects of nano-aluminum particle size on the explosion behaviors of aluminum/methanol nanofluid fuel spray

Shi, Enhua; Yan, Xingqing; Liang, He; Chen, Xi; Yu, Jianliang

doi:10.1016/j.fuel.2024.131333

Cited by 1 publication

(1 citation statement)

References 60 publications

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“…In the aviation industry, with the increasing depletion of non-renewable aviation fuels and the emissions of a large number of pollutants, great attention is being paid to the utilization of low-CO 2 -emission fuels [1] and improving the utilization efficiency of aviation fuels [2,3]. Simultaneously, the problem of how to improve the fuel performance and increase the flight range of aircraft using equal amounts of fuel, due to the limited storage volume of the fuel systems of aircraft, will have to be faced [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Secondary Atomization and Micro-Explosion Effect Induced by Surfactant and Nanoparticles on Enhancing the Combustion Performance of Al/JP-10/OA Nanofluid Fuel

Li,

Liu,

Yang

et al. 2024

Molecules

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Aluminum/tetrahydrodicyclopentadiene/oleic acid (Al/JP-10/OA) nanofluid fuel is considered a potential fuel for aircraft powered by aviation turbine engines. However, an optimized formula for an Al/JP-10/OA system inducing a secondary atomization and micro-explosion effect and improving the burning performance needs to be developed. With this aim, in this work, the combustion characteristics of pure JP-10, JP-10/OA, JP-10/Al, and Al/JP-10/OA were experimentally tested, and a comparative analysis was conducted. Specifically, the influence of the surfactant and nanoparticle concentrations on the combustion characteristics of Al/JP-10/OA nanofluid fuel, including the flame structure, the flame temperature, the burning rate, the secondary atomization and micro-explosion effect, etc., were evaluated in detail. The results demonstrate that the addition of OA surfactant and Al nanoparticles had a significant effect on the burning rate of fuel droplets. The OA had an inhibition effect, while the Al nanoparticles had a promotion effect. As both OA and Al nanoparticles were added to the JP-10, the synergetic effect had to be considered. At the optimum ratio of OA to Al for the best suspension stability, there is a critical Al concentration of 1.0 wt.% from promotion to inhibition with increases in the Al concentration. The addition of OA and Al nanoparticles induced the secondary atomization and micro-explosion, resulting in an unsteady combustion and chaotic flame structure. The transient flame temperature of hundreds of Kelvins increased, the high-temperature flame zone widened, and thus, the energy release was elevated. Therefore, the combustion performance and energy release of Al/JP-10/OA nanofluid fuel can be improved through the secondary atomization and micro-explosion effect induced by the surfactant and nanoparticles.

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