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CH4/NH3 Flame Structure and Extinction Limit under Flame–Flame Interactions [PDF]

open access: yesACS Omega
Ammonia is considered to play an important role in replacing traditional fossil fuels in future energy systems. In the experimental study, CH4/NH3 flame was lit by applying a double-nozzle burner to gain insight into the structure, and the laminar diffusion flame structure, CH*/OH* intensity maximum, and flame size were analyzed by an ICCD camera.
Fanxing Meng   +3 more
doaj   +4 more sources

Stability study of flame structure using photodiodes in surface flame burners [PDF]

open access: yesScientific Reports
Radiation spectroscopy can be effective in identifying pollutants and species. By examining a photodiode, the frequency peaks obtained from the analysis, and the range in which the cell flame is converted to a surface flame, we obtained the value ratio ...
Parmis Sadat Jazayeri   +2 more
doaj   +2 more sources

The Effects of Differential Diffusion on Turbulent Non-Premixed Flames LO2/CH4 under Transcritical Conditions Using Large-Eddy Simulation

open access: yesEnergies, 2023
In this paper, a large-eddy simulation (LES) of turbulent non-premixed LO2/CH4 combustion under transcritical conditions is performed based on the Mascotte test rig from the Office National d’Etudes et de Recherches Ae´rospatiales (ONERA), and the aim is
Siyuan Wang   +3 more
doaj   +1 more source

Simulation of a Hydrogen-Air Diffusion Flame under Consideration of Component-Specific Diffusivities

open access: yesApplied Sciences, 2022
This work deals with the numerical investigation of a three-dimensional, laminar hydrogen-air diffusion flame in which a cylindrical fuel jet is surrounded by in-flowing air.
Jana Barabás   +2 more
doaj   +1 more source

The Effect of Diluents on the Flame Structure and NO Generation Characteristics of H2/CO Micromixing Flames

open access: yesEnergies, 2023
This paper uses numerical simulation to investigate the effects of diluents on the flame structure and NO generation of H2/CO micromixing flames. The results show that under the same thermal power condition, the diluents reduce the flame temperature and ...
Wentong Wang   +3 more
doaj   +1 more source

Flame Structure at Elevated Pressure Values and Reduced Reaction Mechanisms for the Combustion of CH4/H2 Mixtures

open access: yesEnergies, 2023
Understanding and controlling the combustion of clean and efficient fuel blends, like methane + hydrogen, is essential for optimizing energy production processes and minimizing environmental impacts. To extend the available experimental database on CH4 +
Ilya E. Gerasimov   +5 more
doaj   +1 more source

Investigation into the Effect of H2-Enriched Conditions on the Structure and Stability of Flames in a Low-Swirl Combustor Derived from Aero-Engine Design

open access: yesAerospace, 2023
This study introduces an innovative approach involving the injection of hydrogen into a low-swirl, non-premixed flame, which operates with gaseous fuels derived from an air-blast atomizer designed for aero-engine applications.
Sara Bonuso   +7 more
doaj   +1 more source

Experimental Study of Coflow Propane—Air Laminar Diffusion Flames at Subatmospheric Pressures

open access: yesApplied Sciences, 2021
The effect of pressure on the flame’s physical structure and soot formation of the coflow propane—air laminar diffusion flames was studied experimentally at subatmospheric pressures from 30 to 101 kPa.
Jiajie Yao, Jiahao Liu, Jian Wang
doaj   +1 more source

Experimental Study on Dynamic Combustion Characteristics in Swirl-Stabilized Combustors

open access: yesEnergies, 2021
An experimental study was performed to investigate the combustion instability characteristics of swirl-stabilized combustors. A premixed gas composed of ethylene and air was burned under various flow and geometric conditions.
Donghyun Hwang, Kyubok Ahn
doaj   +1 more source

Flame Retardancy Properties and Rheological Behavior of PP/DiDOPO Conjugated Flame Retardant Composites

open access: yesFrontiers in Chemistry, 2022
A bridged 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivative (DiDOPO) with conjugated structure was utilized as a novel conjugated flame retardant, Polypropylene(PP)/DiDOPO conjugated flame retardant composites were papered by being melt ...
Daohai Zhang   +8 more
doaj   +1 more source

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