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A Fuzzy Synthetic Evaluation Method of Flame Stability Based on Time–Frequency Analysis and Higher-Order Statistics [PDF]

open access: goldEnergies, 2019
The flame combustion processes involves chemical reactions and therefore flame stability is difficult to accurately assess. Based on flame radiation measuring parameters, a new synthetic evaluation system of flame combustion stability is established.
Haitao Zhang, Ming Zhou, Xudong Lan
doaj   +2 more sources

Numerical analysis of structure, stability and entropy generation in biogas coflow diffusion flames [PDF]

open access: yesArchive of Mechanical Engineering, 2021
Biogas is a gaseous biofuel predominantly composed of methane and carbon-dioxide. Stability of biogas flames strongly depend upon the amount of carbon-dioxide present in biogas, which varies with the source of biomass and reactor.
R. Nivethana Kumar   +2 more
doaj   +1 more source

Effects of Oxygen-Enhanced Combustion Methods on Combustion Characteristics of Non-Premixed Swirling Flames

open access: yesEnergies, 2022
The objective of the present study was to experimentally investigate and compare the characteristics of three oxygen-enhanced combustion (OEC) methods; premix enrichment (PE), air-oxy/fuel combustion (AO), and additionally also oxygen lancing (OL) method.
Pavel Skryja   +4 more
doaj   +1 more source

Research on the Ignition Process and Flame Stabilization of a Combination of Step and Strut: Experimental and Numerical Study

open access: yesEnergies, 2023
A combined application of step and strut was put forward to achieve reliable ignition and flame stabilization. In this work, the ignition process and temperature distribution have been tested, and a new reduction approach applied to jet fuel oxidation ...
Shilong Zhao, Hui Xiao, Yafan Li
doaj   +1 more source

Combustion Characteristics of Methane-Air Mixtures in Millimeter-Scale Systems With a Cavity Structure: An Experimental and Numerical Study

open access: yesFrontiers in Energy Research, 2022
The management of internal features of a cavity structure for channels offers the possibility of inherently effective operation within the flammable limits of a combustible fluid stream while preserving high stability for the flame.
Junjie Chen, Tengfei Li
doaj   +1 more source

Study on statistical invariance of probability processing and fluctuation characteristics of consecutive images of horizontal spray flame under low-pressure

open access: yesCase Studies in Thermal Engineering, 2022
With the development of the plateau environment, to make better use of the heat energy and safety of combustion devices, the structure and stability evaluation of horizontal jet flame and other related issues have attracted more and more people's ...
Kai Xie   +8 more
doaj   +1 more source

Experimental study on combustion and thermal characteristics of impinging premixed flames for low heating value gas (LHVG) fuels

open access: yesCase Studies in Thermal Engineering, 2023
The combustion and thermal characteristics of impinging premixed flames for low heating value gases (LHVGs) composed of methane, propane, and nitrogen are experimentally investigated.
Hyeon Taek Nam   +3 more
doaj   +1 more source

Numerical study of laminar non-premixed biogas-air flames behind backward facing steps [PDF]

open access: yesArchive of Mechanical Engineering, 2022
Biogas, a renewable fuel, has low operational stability range in burners due to its inherent carbon-dioxide content. In cross-flow configuration, biogas is injected from a horizontal injector and air is supplied in an orthogonal direction to the fuel ...
Alagani Harish, Vasudevan Raghavan
doaj   +1 more source

Recent trends of phosphorus-containing flame retardants modified polypropylene composites processing

open access: yesHeliyon, 2022
Polypropylene has been used for applications requiring high mechanical properties, good adhesion, chemical stability and insulation. Whereas, Polypropylene itself is flammable, and its limiting oxygen index (LOI) is low, which cannot pass the UL-94 ...
Changbo Zhang   +6 more
doaj   +1 more source

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