Results 11 to 20 of about 11,184 (128)

The Impacts of Three Flamelet Burning Regimes in Nonlinear Combustion Dynamics [PDF]

open access: yes, 2018
Axisymmetric simulations of a liquid rocket engine are performed using a delayed detached-eddy-simulation (DDES) turbulence model with the Compressible Flamelet Progress Variable (CFPV) combustion model.
Nguyen, Tuan, Sirignano, William A.
core   +2 more sources

LES evaluation of the effects of equivalence ratio fluctuations on the dynamic flame response in a real gas turbine combustion chamber [PDF]

open access: yes, 2013
Large Eddy Simulations (LES) of a lean swirl-stabilized gas turbine burner are used to analyze mechanisms triggering combustion instabilities. To separately study the effect of velocity and equivalence ratio fluctuations, two LES of the same geometry are
Gicquel, Laurent Y.M.   +3 more
core   +4 more sources

Large Eddy Simulation of combustion instabilities in a lean partially premixed swirled flame [PDF]

open access: yes, 2012
This paper investigates one issue related to Large Eddy Simulations (LES) of self- excited combustion instabilities in gas-fueled swirled burners: the effects of incom- plete mixing between the gas injection and the combustion chamber.
Albouze   +36 more
core   +3 more sources

Effects of heat release on triple flames [PDF]

open access: yes, 1995
Heat release effects on laminar flame propagation in partially premixed flows are studied. Data for analysis are obtained from direct numerical simulations of a laminar mixing layer with a uniformly approaching velocity field.
Liñán Martínez, Amable   +2 more
core   +2 more sources

Reaction zones and their structure in MILD combustion [PDF]

open access: yes, 2014
Three-dimensional direct numerical simulation (DNS) of turbulent combustion under moderate and intense low-oxygen dilution (MILD) conditions has been carried out inside a cuboid with inflow and outflow boundaries on the upstream and downstreamfaces ...

core   +2 more sources

Comparative study of non-premixed and partially-premixed combustion simulations in a realistic Tay model combustor [PDF]

open access: yes, 2017
A comparative study of two combustion models based on non-premixed assumption and partially premixed assumptions using the overall models of Zimont Turbulent Flame Speed Closure Method (ZTFSC) and Extended Coherent Flamelet Method (ECFM) are conducted ...
Ghobadian, A., Nouri, J. M., Zhang, K.
core   +1 more source

Performance, combustion and emissions of a diesel engine operated with reformed EGR. Comparison of diesel and GTL fuelling [PDF]

open access: yes, 2009
This is the post-print version of the final paper published in Fuel. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other ...
A. Abu-Jrai   +24 more
core   +1 more source

Modelling of turbulent lifted jet flames using flamelets: a priori assessment and a posteriori validation [PDF]

open access: yes, 2014
This study focuses on the modelling of turbulent lifted jet flames using flamelets and presumed PDF approach with interests on both flame lift-off height and flame brush structure.
Darbyshire, O, Ruan, S, Swaminathan, N
core   +2 more sources

Simulation of 2-way fluid structure interaction in a 3D model combustor [PDF]

open access: yes, 2012
The liner of a gas turbine combustor is a very flexible structure that is exposed to the pressure oscillations that occur in the combustor. These pressure oscillations can be of very high amplitude due to thermoacoustic instability, when the fluctuations
Alemela, P.R., Kok, J.B.W., Shahi, M.
core   +3 more sources

Combustion regimes in sequential combustors: Flame propagation and autoignition at elevated temperature and pressure

open access: yes, 2018
This numerical study investigates the combustion modes in the second stage of a sequential combustor at atmospheric and high pressure. The sequential burner (SB) features a mixing section with fuel injection into a hot vitiated crossflow.
Noiray, Nicolas, Schulz, Oliver
core   +1 more source

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