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    Spray Characteristics of Alternative Aviation Fuel Blends

    Year: 2017

    Journal: Aerospace, Volume 4, JUN

    Authors: Vouros, Andreas P.; Vouros, Alexandros P.; Panidis, Thrassos

    Organizations: ECATS (Environmentally Compatible Air Transport System-FP-6 Network of excellence) [ANE-CT-2005-012284]

    Keywords: alternative aviation fuels; jet spray; atomization; phase Doppler anemometry (PDA)

    The compatibility of spray characteristics of alternative fuel blends, in relation to currently used Jet A-1 fuel, has been assessed experimentally. Tested blends were selected based on a narrow cut of paraffins, mixed with appropriately selected aromatics and naphthenes. Relevant physical properties including the density, viscosity, and surface tension were estimated first. The jet spray was produced using a single fluid, generic nozzle at operating pressures 5-11 bars. The atomization characteristics were assessed through measurements of droplet velocity field and droplet size, using phase Doppler anemometry. The physical properties varied within 10% of the reference fuel values. The spray results indicate that all tested blends produced similar atomized jets and droplet sizes, although observed differences may influence the implementation of combustion schemes which require precise control of the flow pattern.
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