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Atomization Characteristics of Jatropha-Derived Alternative Aviation Fuels From Aircraft Engine Injector

[+] Author Affiliations
Ramachandran Sakthikumar, Deivandren Sivakumar, B. N. Raghunandan

Indian Institute of Science, Bangalore, India

John T. C. Hu

Pratt & Whitney Canada, Mississauga, ON, Canada

Paper No. GTINDIA2017-4882, pp. V001T04A017; 8 pages
doi:10.1115/GTINDIA2017-4882
From:
  • ASME 2017 Gas Turbine India Conference
  • Volume 1: Compressors, Fans and Pumps; Turbines; Heat Transfer; Combustion, Fuels and Emissions
  • Bangalore, India, December 7–8, 2017
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5850-9
  • Copyright © 2017 by ASME

abstract

Search for potential alternative jet fuels is intensified in recent years to meet stringent environmental regulations imposed to tackle degraded air quality caused by fossil fuel combustion. The present study describes atomization characteristics of blends of jatropha-derived biofuel with conventional aviation kerosene (Jet A-1) discharging into ambient atmospheric air from a dual-orifice atomizer used in aircraft engines. The biofuel blends are characterized in detail and meet current ASTM D7566 specifications. The experiments are conducted by discharging fuel spray into quiescent atmospheric air in a fuel spray booth to measure spray characteristics such as fuel discharge behavior, spray cone angle, drop size distribution and spray patternation at six different flow conditions. The characteristics of spray cone angle are obtained by capturing images of spray and the measurements of spray drop size distribution are obtained using laser diffraction particle analyzer (LDPA). A mechanical patternator system comprising 144 measurement cells is used to deduce spray patternation at different location from the injector exit. A systematic comparison on the atomization characteristics between the sprays of biofuel blends and the 100% Jet A-1 is presented. The measured spray characteristics of jatropha-derived alternative jet fuels follow the trends obtained for Jet A-1 sprays satisfactorily both in qualitative and quantitative terms.

Copyright © 2017 by ASME

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