Results 1 to 10 of about 32,261 (222)

Numerical simulation of methane-hydrogen premixed flames on a Bunsen burner

open access: yesJournal of Thermal Science and Technology, 2022
Two-dimensional axisymmetric numerical simulations were performed for a Bunsen flame to investigate the OH concentration and heat release rate of methane-hydrogen premixed flames.
Tatsuya MORIYAMA, Kazuhiro YAMAMOTO
doaj   +1 more source

Numerical studies of the interaction mechanism between the pilot flame and main flame [PDF]

open access: yesE3S Web of Conferences, 2022
The interaction mechanism between the rich premixed pilot flame and lean premixed main flame was investigate in this paper. A two-dimensional numerical model was adopted with detailed chemistry and species transport and with no artificial flame anchoring
Zhang Lili, Cui Yongzhang, Yin Pengfei
doaj   +1 more source

Lean blow-off investigation in a linear multi-burner combustor operated in premixed and non-premixed modes

open access: yesApplications in Energy and Combustion Science, 2022
The flame behaviour and the lean blow-off (LBO) mechanism of a multi-burner linear arrangement of five identical burners each fitted with a central bluff body and a swirler up- stream, operated in either premixed or non-premixed mode, was studied ...
Roberto Ciardiello   +3 more
doaj   +1 more source

Non-Premixed Filtered Tabulated Chemistry: Filtered Flame Modeling of Diffusion Flames

open access: yesFuels, 2021
The flame front filtering is a well-known strategy in turbulent premixed combustion. An extension of this approach for the non-premixed combustion context has been proposed by means of directly filtering counterflow diffusion flamelets. Promising results
Pedro Javier Obando Vega   +3 more
doaj   +1 more source

Original scale simulation of gas explosion at heading face in coal mines

open access: yesMeikuang Anquan, 2023
To study the propagation of gas explosion shock wave and flame in coal mine heading face at real scale, the numerical simulation software of gas explosion was used to establish roadway models of different scales, and the influence of premixed gas ...
Yunfei ZHU   +3 more
doaj   +1 more source

Experimental Investigation of Air–Fuel Mixing Effects on Flame Characteristics in a Direct fired Burner

open access: yesEnergies, 2021
The length and pattern of air–fuel mixing plays a significant role in the uniformity, flame temperature, and emission characteristics, which can lead to a superior product quality in a non-oxidizing direct fired burner for a cold-rolled steel plate ...
Cheolwoo Lee, Insu Kim, Junggoo Hong
doaj   +1 more source

Three-Dimensional Direct Numerical Simulation of Near-Field Ozone-Enhanced Lean Premixed Syngas Turbulent Jet Flame

open access: yesEnergies, 2022
Due to its enhancement in the flame speed, ozone added in lean premixed syngas turbulent jet flame was investigated by the three-dimensional direct numerical simulation method in the near field of the flame.
Cong Xu   +5 more
doaj   +1 more source

Combustion Regimes in Turbulent Non-Premixed Flames for Space Propulsion

open access: yesAerospace, 2023
Direct numerical simulations of non-premixed fuel-rich methane–oxygen flames at 20 bar are conducted to investigate the turbulent mixing burning of gaseous propellants in rocket engines. The reacting flow is simulated by using an EBI-DNS solver within an
Daniel Martinez-Sanchis   +3 more
doaj   +1 more source

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

Suppression characteristics of multi-layer metal wire mesh on premixed methane-air flame propagation

open access: yesFrontiers in Materials, 2023
Metal wire mesh is widely used in the energy industry for its excellent protective properties as a fire stopping and explosion isolating material. In this study, the suppression characteristics of different layers of metal mesh on the dynamic behavior of
Xiangrui Feng   +8 more
doaj   +1 more source

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