Results 11 to 20 of about 21,588 (239)

INVESTIGATION OF FLAME STRETCH IN TURBULENT LIFTED JET FLAME [PDF]

open access: yesCombustion Science and Technology, 2014
DNS data of a laboratory-scale turbulent lifted hydrogen jet flame has been analyzed to show that this flame has mixed mode combustion not only at the flame base but also in downstream locations. The mixed mode combustion is observed in instantaneous structures as in earlier studies and in averaged structure, in which the predominant mode is found to ...
Ruan, S, Swaminathan, N, Mizobuchi, Y
openaire   +6 more sources

The effects of flame orientation and mean shear on flame stretch in highly turbulent premixed flames using DNS

open access: yesApplications in Energy and Combustion Science, 2022
In the present work, direct numerical simulation data of a laboratory-scale high Karlovitz number (Ka) jet flame with a strong mean shear and a high Ka freely propagating planar flame without a mean shear were analyzed to explore the influence of flame ...
Tingquan Tian   +3 more
doaj   +1 more source

Flame propagation behavior of propane–air premixed combustion in a confined space with two perforated plates at different initial pressures

open access: yesEnergy Science & Engineering, 2022
The aim of this paper is to analyze local autoignition induced by secondary flame acceleration. The secondary flame acceleration process and the local autoignition formation mechanism at the condition of the secondary flame acceleration propagation were ...
Yangyang Yu   +3 more
doaj   +1 more source

Simultaneous measurements of flame geometry and flow field by OH-PLIF/Stereo PIV

open access: yesNihon Kikai Gakkai ronbunshu, 2016
It is difficult to understand turbulent combustion, because the combustion process is very complex and unsteady. One of the useful parameters for discussion of the unsteady flame behaviors is the flame stretch rate, which is evaluated by local flame ...
Kazuhiro YAMAMOTO   +2 more
doaj   +1 more source

Anchoring of premixed jet flames in vitiated crossflow with pulsed nanosecond spark discharge

open access: yesApplications in Energy and Combustion Science, 2020
This paper deals with the effect of non-equilibrium plasma on the anchoring of a premixed jet flame in hot vitiated crossflow at atmospheric pressure. The turbulent vitiated crossflow was generated by an array of 4×4 premixed turbulent jet flames burning
Sergey Shcherbanev   +6 more
doaj   +1 more source

The Study of Hydrogen Volume Fraction Effects on the Flame Temperature of Turbulence Diffusion Propane Jet Flames

open access: yesFire, 2023
This paper studies the influence of hydrogen volume fraction effects on the temperature distribution of diffusion turbulent propane jet flames.
Bingchuan Yan   +5 more
doaj   +1 more source

Effects of porous insertion in a round-jet burner on flame characteristics of turbulent non-premixed syngas combustion

open access: yesCase Studies in Thermal Engineering, 2019
Synthesis gas (Syngas) is a gaseous mixture that consists of 3 species. It is used in creating synthetic natural gas. In this work, the turbulent non-premixed flame of syngas-air combustion in a round-jet burner is numerically investigated. The burner is
Santiphong Klayborworn, Watit Pakdee
doaj   +1 more source

Implementation variations of adiabatic steady PPDF flamelet model in turbulent H2/air non-premixed combustion simulation

open access: yesCase Studies in Thermal Engineering, 2015
Implementation of the adiabatic steady PPDF flamelet model involves a lot of variations including different scalar dissipation rate calculation methods and different mass diffusion models of the opposed jet flame.
Qiong Li   +3 more
doaj   +1 more source

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

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

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