Results 131 to 140 of about 560 (183)

On the pressure wave emanating from a deflagration flame front. [PDF]

Heliyon
Bisio V, Montomoli F, Rossin S, Tagarielli VL.   +3 more
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Extinction of laminar partially premixed flames

Progress in Energy and Combustion Science, 2009
Flame extinction represents one of the classical phenomena in combustion science. It is important to a variety of combustion systems in transportation and power generation applications. Flame extinguishment studies are also motivated from the consideration of fire safety and suppression.
Suresh Aggarwal
exaly   +2 more sources

On scalar dissipation and partially premixed flame propagation

Combustion Science and Technology, 2003
Measurements of the scalar dissipation rate in the region immediately upstream of a lifted jet flame are presented. The scalar dissipation is determined in this isothermal region from a planar measurement of a two-dimensional conserved scalar (jet fluid) using laser Rayleigh scattering. Fields of the scalar dissipation rate are presented in addition to
K M Lyons, C D Carter
exaly   +2 more sources

Simulation of Premixed and Partially Premixed Jet-in-Crossflow Flames at High-Pressure

Volume 4B: Combustion, Fuels, and Emissions, 2020
Abstract In this paper we explore the operational map of a lean axial-staged combustor of premixed and partially premixed reacting jet-in-crossflow flames at high-pressure (5 atm). This study attempts to expand the data to relatively high pressure and could significantly aid scaling to real gas turbine engine conditions at 20–30 atm ...
Bernhard Stiehl, Michelle Otero, Tommy Genova, Tyler Worbington, Jonathan Reyes, Scott Martin, Carlos Velez, Kareem Ahmed   +7 more
openaire   +1 more source

Extinction of partially premixed flames

Proceedings of the Combustion Institute, 2002
Experimental and numerical studies on extinction of laminar partially premixed flames are carried out. The studies are performed in the counterflow configuration. A premixed fuel-rich mixture of methane (CH 4 ), oxygen (O 2 ), and nitrogen (N 2 ) is injected from one duct while a fuel-lean mixture of CH 4 , O 2 , and N 2 is injected from the other ...
R. Seiser, L. Truett, K. Seshadri
openaire   +1 more source

Flame stretch effects on partially premixed flames

Combustion and Flame, 2000
Abstract Flame stretch is an important characteristic of flame behavior that arises due to flow motion and nonuniformity, and flame curvature. Various investigators have obtained different expressions for flame stretch by employing dissimilar analytical approaches for diverse flame configurations.
Chun W Choi, Ishwar K Puri
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Modelling and Calculation of a Partially Premixed Turbulent Flame

Combustion Science and Technology, 1999
A partially premixed turbulent flame has been modelled using the laminar flamelet concept, i.e. the assumption that laminar flames are embedded in the turbulent flow field. A combination of a premixed flamelet model and a diffusion flamelet model has been used for modelling this partially premixed flame.
Ovink, R., Lamers, A.P.G.G.
openaire   +2 more sources

Partially premixed turbulent flame propagation in jet flames

Symposium (International) on Combustion, 1994
Flamelet formulations for premixed and non-premixed combustion are combined in order to treat partiallypremixed combustion in the fast chemistry limit. The flamelet concept for non-premixed combustion is based on the equation for the mixture fraction Z (x, t ), while that for premixed combustion uses a field equation for the scalar field G (x, t ...
C.M. Müller, H. Breitbach, N. Peters
openaire   +1 more source

NO formation in counterflow partially premixed flames

Combustion and Flame, 2007
An experimental and computational study of NO formation in low-strain-rate partially premixed methane counterflow flames is reported. For progressive fuel-side partial premixing the peak NO concentration increased and the NO distribution along the stagnation streamline broadened.
Hemant Mungekar, Arvind Atreya
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Partial premixing in diffusion flame quenching

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2001
AbstractUsing Direct Numerical Simulation, we focus on the development of partial premixing in laminar diffusion flame quenching. Calculations are performed in the configuration of a 2‐D diffusion flame squeezed by a pair of vortices. First, the flame undergoes strong finite rate chemistry effects, linked to high levels of strain rate induced by ...
Favier, V., Vervisch, L.
openaire   +2 more sources