Results 21 to 30 of about 21,455 (208)

Model constant C of turbulent NO reaction time model

open access: yesCase Studies in Thermal Engineering, 2017
The NO concentration of turbulent jet flames with different fuel, jet velocity, and jet diameter are simulated with the turbulent NO reaction time model. The predicted NO profile has very good agreement with the experimental data.
Qiong Li, Yuexinzhu Lan, Peiyong Wang
doaj   +1 more source

Numerical Investigation on the Jet Characteristics and Combustion Process of an Active Prechamber Combustion System Fueled with Natural Gas

open access: yesEnergies, 2022
An active prechamber turbulent ignition system is a forced ignition method for internal combustion engines fueled with low reactivity fuels, i.e., natural gas and gasoline, which could expand the lean-burn limit, promote flame propagation, and ensure ...
Lina Xu   +4 more
doaj   +1 more source

Temperature Profile Measurement in Non-Premixed Turbulent Flame Near Lean Limit of LPG/Air Mixture [PDF]

open access: yesEngineering and Technology Journal, 2010
The current research was carried out on the topic of non-Premixed turbulentflames.The temperature profile of non- premixed turbulent flame of lean LPG/Airmixture were obtained.A simple jet burner with two different inside diameter and having two ...
Hayder Abed Dhahad
doaj   +1 more source

Effect of steam addition on the flow field and NOx emissions for Jet-A in an aircraft combustor [PDF]

open access: yes, 2016
The steam injection technology for aircraft engines is gaining rising importance because of the strong limitations imposed by the legislation for NOx reduction in airports.
Hu, Chunbo   +3 more
core   +1 more source

Ultra-Lean Premixed Turbulent Combustion: Challenges of RANS Modelling

open access: yesEnergies, 2022
The main challenge of improving spark ignition (SI) engines to achieve ever increasing thermal efficiencies and near-zero pollutant emissions today concerns developing turbulent combustion under homogeneous ultra-lean premixed mixtures (HULP).
Lorenzo Sforza   +3 more
doaj   +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

Validation of Combustion Models for Lifted Hydrogen Flame [PDF]

open access: yesE3S Web of Conferences, 2019
Within a Reynolds Averaged Numerical Simulation (RANS) approach for turbulence modelling, a computational investigation of a turbulent lifted H2/N2 flame is presented.
Cemal Benim Ali, Pfeiffelmann Björn
doaj   +1 more source

LES-CMC simulations of different auto-ignition regimes of hydrogen in a hot turbulent air Co-flow [PDF]

open access: yes, 2013
Large-Eddy Simulation (LES) results in combination with first-order Conditional Moment Closure (CMC) are presented for a hydrogen jet, diluted with nitrogen, issued into a turbulent co-flowing hot air stream.
Mastorakos, E   +2 more
core   +1 more source

Flame self-interactions in an open turbulent jet spray flame [PDF]

open access: yesPhysics of Fluids, 2021
A three-dimensional direct numerical simulation database of an open turbulent jet spray flame representing a laboratory-scale burner configuration has been analyzed to investigate flame self-interactions (FSIs) in the presence of flow induced shear, to the best of the authors' knowledge, for the first time.
S. P. Malkeson   +4 more
openaire   +2 more sources

Product Formation in Chemically-Reacting Turbulent Jets [PDF]

open access: yes, 1992
Results from experiments performed in a newly-constructed High Pressure Combustion Facility are presented. The experiments described here are designed to address Reynolds number effects on turbulent mixing and entrainment, and flame length in an ...
Dimotakis, P. E., Gilbrech, R. J.
core   +1 more source

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