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

Sakthikumar, Ramachandran and Sivakumar, Deivandren and Raghunandan, BN and Hu, John TC (2018) Atomization Characteristics of Jatropha-Derived Alternative Aviation Fuels From Aircraft Engine Injector. In: ASME 2017 Gas Turbine India Conference, GTINDIA 2017, 7 - 8 December 2017, Bangalore.

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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 jatrophaderived alternative jet fuels follow the trends obtained for Jet A- 1 sprays satisfactorily both in qualitative and quantitative terms.

Item Type:	Conference Paper
Publisher:	American Society of Mechanical Engineers
Additional Information:	The copyright for this article belongs to the American Society of Mechanical Engineers.
Keywords:	Alternative jet fuel; Atomization; Jatropha biofuel; Jet engine injector; Liquid jet; Spray characteristics; Spray characteristics
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	14 Jun 2022 05:34
Last Modified:	14 Jun 2022 05:34
URI:	https://eprints.iisc.ac.in/id/eprint/73442

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