Small-volume, high-throughput techniques for fuel physical property measurements

Document Type

Conference Proceeding

Publication Date

1-1-2019

Abstract

Fuel physical properties including surface tension, viscosity play a key role in spray atomization and mixing processes in IC engines affecting their combustion and emission characteristics. The ongoing development of a small-volume, high-throughput screening tool for fuels has required the development of techniques to utilize minute fuel quantities, of the order of 5 µL, and provide information on relevant physical properties in a rapid fashion. To this end, the shape oscillation dynamics of single droplets generated by a piezo-electric device are used to measure surface tension and viscosity. The measurement techniques are applied to primary reference fuels (Isooctane and N-heptane) as well as relevant bio-fuels such as 2-butanone, butyl acetate, and others. Results for surface tension and viscosity are correlated with literature data as well as data obtained using standard reference instruments. Overall, the objective of this work is to demonstrate the validity of the techniques used to measure fuel physical properties in a rapid manner using a limited sample size.

Publication Source (Journal or Book title)

AIAA Propulsion and Energy Forum and Exposition, 2019

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