Size and Hydration Characteristics of Laboratory Simulated Jet Engine Combustion Aerosols

Abstract

Size and hydration characteristics for laboratory simulated jet engine combustion aerosols are reported and the validity of these simulated data is discussed. The jet fuels JP4, JP5, JP8 and JET A were burned in laboratory burners designed to simulate the lean pre-mixed, pre-vaporized advanced combustor concept. Significant quantities of aerosols were detected and in most cases their size and hydration properties were similar. Dry particle size distributions were single mode extending over the diameter range 0.014 to 0.200 microns, with peak diameters in the range 0.020 to 0.050 microns. The distributions were observed to vary with combustion stoichiometry, increasing the peak particle diameter as the combustion stoichiometry shifted from leaner to richer conditions. Critical supersaturation spectra for each fuel are presented. A mean ratio of cloud condensation nuclei to condensation nuclei (CCN/CH) has been calculate for each fuel: JP4=32%, JP5=42%, JET A=39%, and JP8=35% indicating that in general 30 - 40% of the combustion aerosols generated with these laboratory burners can be considered cloud condensation nuclei.

Department(s)

Chemistry

Second Department

Physics

International Standard Serial Number (ISSN)

0272-6351

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1993 Taylor & Francis Ltd., All rights reserved.

Publication Date

01 Jan 1993

Link to Full Text

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