Results 11 to 20 of about 635,474 (345)

Turbulent flame speed and reaction layer thickening in premixed jet flames at constant Karlovitz and increasing Reynolds numbers [PDF]

open access: yes, 2020
A series of Direct Numerical Simulations (DNS) of lean methane/air flames was conducted in order to investigate the enhancement of the turbulent flame speed and modifications to the reaction layer structure associated with the systematic increase of the ...
A. Attili   +4 more
semanticscholar   +1 more source

Effect of fuel ratio of coal on the turbulent flame speed of ammonia/coal particle cloud co-combustion at atmospheric pressure

open access: yes, 2020
This study aims to clarify the effect of fuel ratio of coal on the turbulent flame speed of ammonia/coal particle cloud co-combustion at atmospheric pressure under various turbulence intensities.
K. Hadi   +5 more
semanticscholar   +1 more source

Turbulent flame propagation limits of ammonia/methane/air premixed mixture in a constant volume vessel

open access: yes, 2020
Ammonia is one of promising energy carriers that can be directly used as carbon-neutral fuel for combustion applications. However, because of the low-burning velocity of ammonia, it is challenging to introduce ammonia to practical combustors those are ...
Genya Hashimoto   +7 more
semanticscholar   +1 more source

RANS- and TFC-Based Simulation of Turbulent Combustion in a Small-Scale Venting Chamber

open access: yesEnergies, 2021
A laboratory-scale chamber is convenient for combustion scenarios in the practical analysis of industrial explosions and devices such as internal combustion engines.
Justina Jaseliūnaitė   +2 more
doaj   +1 more source

Propagation Properties of Turbulent Premixed Flames Neutral for Thermo-Diffusive Effects

open access: yesInternational Journal of Automotive Engineering, 2020
Burning velocity is one of the important properties of premixed turbulent flames. Premixed turbulent flames are, in general, subjected to the thermo-diffusive effects in addition to the increase in the flame front area due to the influence of turbulence.
Toshiaki Kitagawa   +4 more
doaj   +1 more source

Turbulent Premixed Combustion in SI Engine

open access: yesDiyala Journal of Engineering Sciences, 2018
The turbulent lean premixed combustion simulation is implemented in 4- stroke spark ignition (SI) engine. The Turbulent Flame speed Closure model (TFC) is used in different turbulent flow conditions.
Mohammed Alhumairi, Sami A. Nawi
doaj   +1 more source

Turbulent Chemical Diffusion in Convectively Bounded Carbon Flames [PDF]

open access: yes, 2016
It has been proposed that mixing induced by convective overshoot can disrupt the inward propagation of carbon deflagrations in super-asymptotic giant branch stars.
Bildsten, Lars   +8 more
core   +2 more sources

Numerical Study on the Effects of Turbulence Scale on Spherically Propagating Hydrogen Flames within Multiple Flame Radii

open access: yesInternational Journal of Automotive Engineering, 2019
Three-dimensional direct numerical simulations of spherically propagating premixed turbulent hydrogen flames were carried out to clarify the influence of turbulence scale on propagating hydrogen/air flame.
Hazim Shehab   +3 more
doaj   +1 more source

Statistics and topology of local flame–flame interactions in turbulent flames [PDF]

open access: yesCombustion and Flame, 2019
Abstract Flame–flame interaction events occur frequently in turbulent premixed flames and change the local structure and dynamics of flames. It is essential to understand these flame–flame interaction events to develop high-fidelity combustion models for use in modern combustion devices.
Ankit Tyagi   +3 more
openaire   +2 more sources

A Lagrangian-based flame index for the transported probability density function method

open access: yesTheoretical and Applied Mechanics Letters, 2022
We propose a new flame index for the transported probability density function (PDF) method. The flame index uses mixing flux projections of Lagrangian particles on mixture fraction and progress variable directions as the metrics to identify the ...
Zhen Lu   +4 more
doaj   +1 more source

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