Results 31 to 40 of about 344,862 (356)

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

Can laser-induced incandescence calibrated by laser extinction method be used for quantitative determination of soot volume fraction in laminar flames?

open access: yesApplications in Energy and Combustion Science, 2023
This review is conducted to assess the effectiveness of the laser extinction method (LEM) calibrated laser-induced incandescence (LII) to quantitatively determine the soot volume fraction in flames.
Zijian Zhang, Lei Zhou, Xiaozhou He
doaj   +1 more source

Model Flames in the Boussinesq Limit: The Effects of Feedback [PDF]

open access: yes, 2002
We have studied the fully nonlinear behavior of pre-mixed flames in a gravitationally stratified medium, subject to the Boussinesq approximation. Key results include the establishment of criterion for when such flames propagate as simple planar flames ...
A.M. Khokhlov   +17 more
core   +2 more sources

Experimental Characterization of Flame Structure and Soot Volume Fraction of Premixed Kerosene Jet A-1 and Surrogate Flames

open access: yesApplied Sciences, 2021
Modeling the chemical reactions and soot processes in kerosene flames is important to support the design of future generations of low-emission aircraft engines.
Thomas von Langenthal   +5 more
doaj   +1 more source

Chemiluminescence spectroscopy to explore the flame temperature

open access: yesNihon Kikai Gakkai ronbunshu, 2017
To explore the behavior of near-extinction flamelets in turbulent premixed flames, emission intensities of OH, CH and C2 radicals of hydrocarbon-air premixed flames have been examined using the newly developed emission spectroscopy system.
Yuzo KAWASOE   +4 more
doaj   +1 more source

A fast, low-memory, and stable algorithm for implementing multicomponent transport in direct numerical simulations [PDF]

open access: yes, 2019
Implementing multicomponent diffusion models in reacting-flow simulations is computationally expensive due to the challenges involved in calculating diffusion coefficients.
Beardsell, Guillaume   +4 more
core   +2 more sources

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

Flamelet Characteristics of Gaseous and Spray Lifted Flames on Two-Dimensional Direct Numerical Simulations

open access: yesJournal of Fluid Science and Technology, 2008
The detailed behaviors of gaseous and spray lifted flames are studied by two- dimensional direct numerical simulations (DNS), and the characteristics of the flamelets are investigated in terms of two key variables for flamelet modeling, namely mixture ...
Yuya BABA, Ryoichi KUROSE
doaj   +1 more source

The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study

open access: yesSouth African Journal of Chemical Engineering, 2020
In this paper, the effects of hydrogen addition on the chemical kinetics of hydrogen–hydrocarbon flames were investigated numerically. Profiles of maximum OH, O and H radical mole fractions, flame temperature and emission levels of hydrogen-methane ...
Zine labidine Messaoudani   +3 more
doaj   +1 more source

Thermal-Diffusional Instability in White Dwarf Flames: Regimes of Flame Pulsation

open access: yes, 2017
Thermal-diffusional pulsation behaviors in planar as well as outwardly and inwardly propagating white dwarf carbon flames are systematically studied.
Gao, Yang   +5 more
core   +1 more source

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