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Numerical study on stretch extinction mechanism of NH3/H2/air laminar counterflow premixed flames
Fuel Processing TechnologyAmmonia and hydrogen are two most promising carbon-free fuels emerging in recent years, and their co-combustion is well recognized as an efficient approach to solve the issues associated with ammonia's poor combustion behaviors.
Wenxuan Zhou +5 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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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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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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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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Journal of Thermal Science and Technology, 2023 To investigate the effects of inert-gas addition on the dynamic behavior and propagation characteristics of spherically expanding hydrogen-air flames, the experiments of premixed combustion were performed in a closed chamber.
Toshiyuki KATSUMI +6 more
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Oxygen combustion of CH4-CO2 mixture in a small-scale counterflow burner
Journal of Thermal Science and Technology, 2018 Oxygen combustion of CH4-CO2 mixture in a small-scale counterflow burner was studied. A diffusion flame was stabilized in the gap between opposed ports ejecting fuel and oxygen gases, and its thickness which depended on the gap distance between burner ...
Satoshi KADOWAKI +5 more
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Characteristics of biogas-oxygen micro counterflow diffusion flames
Nihon Kikai Gakkai ronbunshu, 2015 The characteristics of biogas-oxygen diffusion flames were experimentally investigated using small counterflow burners, where the apparent equivalence ratio was set to unity.
Satoshi KADOWAKI +3 more
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