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Numerical modelling of the internal mixing by coagulation of black carbon particles in aircraft exhaust

Abstract

When exhaust gases from an aircraft engine mix with ambient air the humidity may reach water saturation and water droplets will form on the available cloud condensation nuclei (CCN). It is still not resolved if the CCN, on which the cloud droplets form, are mainly particles present in the ambient air or particles emitted by the aircraft. It the exhaust from a jet engine the particles are believed to consist mainly of black carbon (BC) and sulfate. The aim is to study, with the help of a numerical model, how a two-component aerosol (i.e. BC and sulfate) in an exhaust trail may be transformed in terms of hygroscopicity by coagulation mixing and how this may depend on the sulfur content in the fuel. (R.P.) 15 refs.
Authors:
Ohlsson, S; Stroem, J [1] 
  1. Stockholm Univ. (Sweden). Dept. of Meteorology
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
ONERA-97-Vol.2; CONF-9610234-
Reference Number:
SCA: 540110; 540120; PA: FRC-98:000170; EDB-98:075800; SN: 98001913189
Resource Relation:
Conference: International colloquium: Impact of aircraft emissions upon the atmosphere, Paris (France), 15-18 Oct 1996; Other Information: PBD: 1997; Related Information: Is Part Of Proceedings of impact of aircraft emissions upon the atmosphere. V. 2; PB: [299] p.
Subject:
54 ENVIRONMENTAL SCIENCES; AIRCRAFT; EXHAUST GASES; CONDENSATION NUCLEI; CLOUDS; AEROSOLS; CARBON; SULFUR; ATMOSPHERIC CHEMISTRY; SULFATES; MIXING; MATHEMATICAL MODELS
OSTI ID:
623667
Research Organizations:
Office National d`Etudes et de Recherches Aerospatiales (ONERA), 92 - Chatillon (France)
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: DE98002998; TRN: FR9800170
Availability:
OSTI as DE98002998
Submitting Site:
FR
Size:
pp. 477-482
Announcement Date:

Citation Formats

Ohlsson, S, and Stroem, J. Numerical modelling of the internal mixing by coagulation of black carbon particles in aircraft exhaust. France: N. p., 1997. Web.
Ohlsson, S, & Stroem, J. Numerical modelling of the internal mixing by coagulation of black carbon particles in aircraft exhaust. France.
Ohlsson, S, and Stroem, J. 1997. "Numerical modelling of the internal mixing by coagulation of black carbon particles in aircraft exhaust." France.
@misc{etde_623667,
title = {Numerical modelling of the internal mixing by coagulation of black carbon particles in aircraft exhaust}
author = {Ohlsson, S, and Stroem, J}
abstractNote = {When exhaust gases from an aircraft engine mix with ambient air the humidity may reach water saturation and water droplets will form on the available cloud condensation nuclei (CCN). It is still not resolved if the CCN, on which the cloud droplets form, are mainly particles present in the ambient air or particles emitted by the aircraft. It the exhaust from a jet engine the particles are believed to consist mainly of black carbon (BC) and sulfate. The aim is to study, with the help of a numerical model, how a two-component aerosol (i.e. BC and sulfate) in an exhaust trail may be transformed in terms of hygroscopicity by coagulation mixing and how this may depend on the sulfur content in the fuel. (R.P.) 15 refs.}
place = {France}
year = {1997}
month = {Dec}
}