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Numerical Study on Chemical Kinetic Characteristics of Counterflow Diffusion Flame Extinction of Methane/Ammonia/Air Flame under High Pressure or Air Preheating Temperature [PDF]
MoleculesGreen ammonia has become an increasingly popular fuel in recent years because of its combustion process without carbon oxide release. Adding ammonia to methane fuel for co-combustion has become one of the important research topics in the current ...
Ying Chen +3 more
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Influences of stretch and curvature on the temperature of stretched cylindrical diffusion flames
Journal of Thermal Science and Technology, 2016 The structure of a counterflow-type cylindrical diffusion flame was studied experimentally to determine the effect of stretch and curvature. The cylindrical flame used in this study had a concave curvature with respect to the fuel stream.
Yosuke SUENAGA +2 more
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Applications in Energy and Combustion Science, 2022 In the present work, direct numerical simulation data of a laboratory-scale high Karlovitz number (Ka) jet flame with a strong mean shear and a high Ka freely propagating planar flame without a mean shear were analyzed to explore the influence of flame ...
Tingquan Tian +3 more
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Journal of Thermal Science and Technology, 2022 Microscale hydrogen (H2) combustion is one of the promising technologies for renewable miniaturized heat sources. This study analyzes the oxygen combustion of H2 in small-scale counterflow burners, with carbon dioxide (CO2) added for safe hydrogen ...
Daisuke SATO +5 more
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Wrinkled flames and geometrical stretch [PDF]
Physical Review E, 2011 Localized wrinkles of thin premixed flames subject to hydrodynamic instability and geometrical stretch of uniform intensity (S) are studied. A stretch-affected nonlinear and nonlocal equation, derived from an inhomogeneous Michelson-Sivashinsky equation, is used as a starting point, and pole decompositions are used as a tool.
Denet, Bruno, Joulin, G.
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Flow field and local burning velocity affected by stretch in swirl flow of turbulent premixed flames
Journal of Thermal Science and Technology, 2022 In this study, we have investigated turbulent premixed flames affected by local stretch in a swirl flow, measured by the simultaneous OH-PLIF/SPIV system. Evaluating the transient of burning velocity and stretch rate, the flow and the flame dynamics in a
Kazuhiro YAMAMOTO +2 more
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A generalization of the Thickened Flame model for stretched flames
Combustion and Flame, 2023 The Thickened Flame (TF) model is a widely used approach for Large Eddy Simulation of premixed flames. It is based on a “mapping” transformation where all diffusivities are multiplied by a thickening factor F while reaction terms are divided by F. Theory shows and 1D flame simulations confirm that this mapping preserves the unstretched laminar flame ...
Detomaso, Nicola +4 more
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Nihon Kikai Gakkai ronbunshu, 2020 A counter-flow diffusion flame formed of a fuel consisting of methane and nitrogen, and a oxidizer of air heated to 500℃ was applied to clarify the influence on the extinction limit when fine powder of polymethyl methacrylate (PMMA) was added to the fuel.
Hironao HANAI, Toshiki SUDA
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Flame induced vorticity: Effects of stretch [PDF]
Symposium (International) on Combustion, 1988 In many conbustion situations the flame may be regarded as an interface separating fluids of different densities: fresh reactants from burnt products. Basic considerations of such thin flames indicate that in general the velocity field in the burnt regions is rotational; that is, flames produce vorticity.
Pindera, M.Z., Talbot, L.
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Applications in Energy and Combustion Science, 2023 Plasma-assisted combustion has the potential to improve flame stability and combustion performance. Among all the different types of plasma source, nanosecond repetitively pulsed (NRP) discharges have received a lot of attention since they can produce ...
Julien Lambert +3 more
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