Journal
EXPERIMENTAL THERMAL AND FLUID SCIENCE
Volume 87, Issue -, Pages 93-103Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.expthermflusci.2017.04.027
Keywords
Nanofuels; Alumina nanoparticles; Spray characteristics; Sheet breakup length; Phase Doppler anemometry; Gas-to-liquid jet fuel
Funding
- Qatar National Research Fund through the National Priorities Research Program grant [NPRP-07-1449-2-523]
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The use of metal nanoparticles as fuel additives have gained interest due to its positive influence on liquid fuels' combustion and emission performance. Nanoparticles dispersion affects the hydrodynamic and thermo-physical properties of the liquid fuel, and in turn, its atomization, mixing and evaporation characteristics. This work investigates the influence of nanoparticles dispersion on the spray performance of alternative gas-to-liquid (GTL) jet fuel under atmospheric ambient conditions. The spray characteristics of GTL fuel with dispersed alumina nanoparticles are compared with those of the pure GTL fuel. The spray characteristics at the macroscopic and microscopic levels are measured using the optical diagnostic techniques of shadowgraph and phase Doppler anemometry, respectively. The nanoparticles dispersed in liquid fuel tend to slightly alter the transient nature of the spray formation, enhance the liquid sheet instability and reduce the liquid sheet breakup length when compared to those of the pure GTL fuel. Furthermore, the mean droplet sizes of GTL fuel dispersed with nanoparticles are smaller than those of the pure GTL fuel. (C) 2017 Elsevier Inc. All rights reserved.
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