Quantitative measurement of soot particle size distribution in premixed flames - The burner-stabilized stagnation flame approach

Journal Article · Thu Oct 15 00:00:00 EDT 2009 · Combustion and Flame

DOI:https://doi.org/10.1016/J.COMBUSTFLAME.2009.05.010· OSTI ID:21227391

Abid, Aamir D; Camacho, Joaquin; Sheen, David A; Wang, Hai ^[1]

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1. Aerospace and Mechanical Engineering Department, University of Southern California, Los Angeles, CA 90089 (United States)

A burner-stabilized, stagnation flame technique is introduced. In this technique, a previously developed sampling probe is combined with a water-cooled circular plate such that the combination simultaneously acts as a flow stagnation surface and soot sample probe for mobility particle sizing. The technique allows for a rigorous definition of the boundary conditions of the flame with probe intrusion and enables less ambiguous comparison between experiment and model. Tests on a 16.3% ethylene-23.7% oxygen-argon flame at atmospheric pressure show that with the boundary temperatures of the burner and stagnation surfaces accurately determined, the entire temperature field may be reproduced by pseudo one-dimensional stagnation reacting flow simulation using these temperature values as the input boundary conditions. Soot particle size distribution functions were determined for the burner-stabilized, stagnation flame at several burner-to-stagnation surface separations. It was found that the tubular probe developed earlier perturbs the flow and flame temperature in a way which is better described by a one-dimensional stagnation reacting flow than by a burner-stabilized flame free of probe intrusion. (author)

• OSTI ID: 21227391
• Journal Information: Combustion and Flame, Vol. 156, Issue 10; Other Information: Elsevier Ltd. All rights reserved; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
PARTICLE SIZE
DISTRIBUTION FUNCTIONS
SOOT
ARGON
FLAMES
STAGNATION
BURNERS
PROBES
ETHYLENE
OXYGEN
SURFACES
BOUNDARY CONDITIONS
ONE-DIMENSIONAL CALCULATIONS
TEMPERATURE DISTRIBUTION
SAMPLING
ATMOSPHERIC PRESSURE
COMBUSTION PROPERTIES
PLATES
SIMULATION
DISTANCE
TEMPERATURE RANGE 1000-4000 K
Probe sampling
Premixed flames