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Soot formation in monodisperse droplet streams

Berthoumieu, Pierre and Geigle, Klaus Peter (2007) Soot formation in monodisperse droplet streams. Project Report.

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Abstract

Because of the coexistence of liquid and gaseous fuel phases in an aero engine combustor with typical air blast atomiser the soot formation process cannot be traced back unambiguously to physical effects of the one chemical or kinetical effects of the other phase. The objective of this task was to improve understanding of soot formation and its dependence on droplet properties. Soot formation from a monodisperse droplet stream has been detected in a basic experiment with well defined initial conditions of droplet size, droplet concentration, air fuel ratio, liquid physical properties, etc. An existing experimental test rig has been adapted to study soot formation during the combustion of a monosized droplet stream of hydrocarbon fuel in air. Compounds and composition of the fuel has been defined in another task of this project. The two phase flow was characterised in non reacting conditions by the use of optical techniques. Operating conditions were variable pressure and droplet concentration, and liquid kerosenelike fuels. The analysis of soot appearance and evolution correlated with a parametric variation of operating conditions (pressure, air fuel ratio, residence time, temperature) was realised using laser-induced incandescence (LII).

Document Type:Monograph (Project Report)
Title:Soot formation in monodisperse droplet streams
Authors:
AuthorsInstitution or Email of Authors
Berthoumieu, PierreONERA, DEFA/DMAE
Geigle, Klaus PeterUNSPECIFIED
Date:January 2007
Journal or Publication Title:Final Report: EU Growth Project GRD1-2001-41804 "SiA-TEAM" Work Package 1: Liquid Phase and Soot Formation
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:Monodisperse Droplets, Pressure, Combustion, LII, Sooting Flames, Kerosene
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Stuttgart
Institutes and Institutions:Institute of Combustion Technology > Combustion Diagnostícs
Deposited By: Dr. Klaus Peter Geigle
Deposited On:20 Sep 2007
Last Modified:27 Apr 2009 14:23

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