Results 251 to 260 of about 22,777 (264)

Scaling of buoyant turbulent jet diffusion flames

Combustion and Flame, 1991
Abstract Approximate solutions are derived for large buoyant jet diffusion flames into still and horizontally co-flowing air. The fuel jet issues at an angle to the horizontal varying from 0° to 90°. The approximation is based on top hat profiles for the axial velocity and the mixture fraction variable as well as on a simple differential equation for
N. Peters, J. Göttgens
openaire   +1 more source

Concentration Fluctuations in Turbulent Jet Diffusion Flames

Combustion Science and Technology, 1974
Abstract A model for the concentration fluctuations in a turbulent diffusion flame is presented. It incorporates the features of intermittency, random fluctuations of stoichiometry within the turbulent fluid and of fuel and oxygen separation either side of the reaction front.
R. W. BILGER, J. H. KENT
openaire   +1 more source

Temporal Behavior of Lifted Turbulent Jet Flames

Combustion Science and Technology, 2000
Measurements of the fluctuating liftoff height of turbulent jet flames were made using a linear photo-diode array. A wide range of experimental conditions was investigated, including varying the fuel, nozzle diameter and liftoff height. The amplitudes of the fluctuations in h were found to be of the order of the local large scale of the jet.
Hammer, Jay A., Roshko, Anatol
openaire   +2 more sources

Stabilization in turbulent lifted deflected-jet flames

Proceedings of the Combustion Institute, 2002
The stabilization region of two turbulent lifted deflected-jet flames injected at 45° into a cross-flow is investigated. The two flames with the same jet Reynolds number ( Re d =6000), but with different crossflow speeds ( U cr =1.8 and 3.0 m/s), are compared to understand the stabilization mechanism of such jet flames.
Donghee Han, M.G. Mungal
openaire   +1 more source

Vortex-flame interactions and extinction in turbulent jet diffusion flames

Symposium (International) on Combustion, 1996
Unsteady vortex-flame interactions and subsequent local extinction have been investigated in double-concentric turbulent methane jet diffusion flames stabilized on a thick-walled fuel tube using joint Mie scattering/thin-filament pyrometry (MS/TFP) and two-color particle image velocimetry (PIV).
Fumiaki Takahashi, W. John Schmoll, Darryl D. Trump, Larry P. Goss   +3 more
openaire   +1 more source

Large Eddy Simulation of a Turbulent Reacting Jet‐Flame

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2001
AbstractThe high nonlinearity of the chemical reaction terms requires a closure model for the chemical source terms occurring in the spatially filtered scalar transport equations. Based on the Conditional Moment Closure hypothesis a new model was recently proposed for LES of non‐premixed combustion.
Steiner, H., Bushe, W. K.
openaire   +2 more sources

Smoke yields from turbulent buoyant jet flames

Fire Safety Journal, 1993
Simple correlations for smoke yield in turbulent buoyant jet flames with smoke-point laminar flame heights are proposed and validated by using experimental data for gaseous, liquid and solid fuels. The smoke yield (kg smoke/kg fuel) in turbulent flames was measured for conditions representing turbulent buoyant jet flames (i.e.
openaire   +1 more source

Non-premixed turbulent jet flames

22nd Aerospace Sciences Meeting, 1984
P. DIMOTAKIS, J. BROADWELL
openaire   +1 more source

Flame structure and broadening in turbulent premixed jet flames

Combustion and Flame, 2023
Ignacio Trueba-Monje, Jeffrey A. Sutton
openaire   +1 more source

Measurements in Turbulent Jet Diffusion Flames

Combustion and Flame, 1973
J.H. Kent, R.W. Bilger
openaire   +1 more source