Effect of aircraft exhaust sulfur emissions on near field plume aerosols
1996; American Geophysical Union; Volume: 23; Issue: 24 Linguagem: Inglês
10.1029/96gl03338
ISSN1944-8007
AutoresRobert C. Brown, Richard C. Miake‐Lye, Mark R. Anderson, C. E. Kolb,
Tópico(s)Advanced Aircraft Design and Technologies
ResumoA two dimensional, axisymmetric flowfield model with coupled gas phase oxidation kinetics and aerosol nucleation and growth dynamics is used to evaluate the effect of fuel sulfur oxidation in the Concorde engine on the formation and growth of volatile H 2 SO 4 /H 2 O aerosols in the near field plume. Rased on estimated exit plane sulfur speciation, results are shown for between 2% and 20% conversion of the fuel sulfur to S(VI) (SO 3 and H 2 SO 4 ) in engine. The primary motivation is to provide estimates for the changes in the number density and surface area density of sulfuric acid aerosols due to sulfur oxidation in the engine. This analysis indicates the need for experimental measurements of sulfur emissions at the exhaust exit, in addition to soot properties, to fully assess the atmospheric impact of aircraft emissions.
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