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The Interaction between In-Cylinder Turbulent Flow and Flame Front Propagation in an Optical SI Engine Measured by High-Speed PIV [PDF]
Energies, 2022 The relationship between the flow field and flame propagation is essential in determining the dynamics and effects of turbulent flow in an optical SI engine.
Yuji Ikeda
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The interaction of high-speed turbulence with flames: Turbulent flame speed [PDF]
Combustion and Flame, 2011 44 pages, 20 figures; published in Combustion and ...
Poludnenko, Alexei Y., Oran, Elaine S.
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Combustion Science and Technology, 2023 This study investigates turbulent flame speed and turbulent Markstein length using analytic and numerical methods. Using asymptotic analysis on harmonically oscillating flames, explicit expressions for the un-stretched turbulent flame speed and the turbulent Markstein length are derived.
Jung‐Ho Sohn +2 more
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A Data-Driven Methodology for the Simulation of Turbulent Flame Speed across Engine-Relevant Combustion Regimes [PDF]
Energies, 2021 Turbulent combustion modelling in internal combustion engines (ICEs) is a challenging task. It is commonly synthetized by incorporating the interaction between chemical reactions and turbulent eddies into a unique term, namely turbulent flame speed sT ...
Alessandro d’Adamo +2 more
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Journal of Thermal Science and TechnologyThe local burning velocity and flame displacement speed are the major properties of premixed flames. The local burning velocity, which is the instantaneous quantity based on the local consumption rate of the unburnt mixture, is considered to be the most ...
Kazuya TSUBOI
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Turbulent flame speed of thermodiffusively unstable flames: experimental investigation and scaling [PDF]
, 2023 This work presents an experimental set of Bunsen flames characterized by a moderate Reynolds number and a variable turbulence intensity. Ten lean hydrogen-enriched methane-air mixtures at three levels of turbulence are investigated, ranging from pure methane-air to pure hydrogen-air.
Guido Troiani +3 more
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Scaling transition of turbulent flame speed for thermodiffusively unstable flames
Physics of FluidsThis work presents an experimental set of Bunsen flames characterized by a moderate Reynolds number and a variable turbulence intensity. Ten lean hydrogen-enriched methane–air mixtures at three turbulence levels are investigated, ranging from methane–air to hydrogen–air mixtures. Such mixtures are selected to have an almost constant laminar flame speed
Guido Troiani +3 more
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Volume 3A: Combustion, Fuels, and Emissions, 2023 Abstract Carbon dioxide emissions in gas turbine power generation can be reduced by adding an increasing amount of hydrogen to the existing natural gas-fueled combustion systems. To enable safe operation, more insight on how H2 addition affects turbulent flame speed and other important flame characteristics is needed.
Filippo Faldella +4 more
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Enhancement of turbulent flame speed of V-shaped flames in fractal-grid-generated turbulence
Combustion and Flame, 2016 A variety of fractal grids is used to investigate how fractal-grid-generated turbulence affects the turbulent flame speed for premixed flames. The grids are placed inside a rectangular duct and a V-shaped flame is stabilized downstream of the duct, using a metal wire. This flame is characterized using OH-LIF.
Anton Verbeek
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Interrelation Between Dilatation Rate and Displacement Speed in Premixed Turbulent Flames. [PDF]
Flow Turbul CombustMohan V +4 more
europepmc +3 more sources