Flow field studies of a new series of turbulent premixed stratified flames

Journal Article · Mon Feb 15 00:00:00 EST 2010 · Combustion and Flame

DOI:https://doi.org/10.1016/J.COMBUSTFLAME.2009.09.001· OSTI ID:21262176

Seffrin, F; Fuest, F; Dreizler, A ^[1]; Geyer, D ^[2]

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1. Technische Universitaet Darmstadt, Center of Smart Interfaces, Reaktive Stroemungen und Messtechnik, Petersenstr. 32, 64287 Darmstadt (Germany)
2. Hochschule Darmstadt, Thermodynamik und Alternative Antriebe, Haardtring 100, 64295 Darmstadt (Germany)

This paper presents a new burner design for lean premixed stratified combustion for experiments to validate models for numerical simulations. The burner demonstrates combustion phenomena relevant to technological applications, where flames are often turbulent, lean premixed, and stratified. The generic burner was designed for high Reynolds number flows and can stabilize a variety of different lean premixed flames. The burner's design and its versatile operational conditions are introduced. Shear, stratification, and fuel type are parametrically varied to provide a sound database of related flow configurations. Reacting and corresponding non-reacting configurations are examined. Experimental setups and the results of laser Doppler velocimetry (LDV) and particle image velocimetry (PIV) are presented and discussed. LDV measurements provide radial profiles of mean axial velocity, mean radial velocity, and turbulent kinetic energy as well as integral time scales. High-speed PIV is introduced as a novel technique to determine integral time and length scales and provide 2D 2-component velocity fields and related quantities, such as vorticity. (author)

• OSTI ID: 21262176
• Journal Information: Combustion and Flame, Vol. 157, Issue 2; 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
RADIAL VELOCITY
COMBUSTION
FLAMES
BURNERS
LENGTH
KINETIC ENERGY
MATHEMATICAL MODELS
TURBULENCE
CONFIGURATION
DESIGN
FUELS
JETS
SHEAR
COMPUTERIZED SIMULATION
STRATIFICATION
VALIDATION
Lean premixed combustion
Stratified combustion
Laser Doppler velocimetry
High-speed particle image velocimetry