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Lagrangian Formulation of Turbulent Premixed Combustion [PDF]
Physical Review Letters, 2011 The Lagrangian point of view is adopted to study turbulent premixed combustion. The evolution of the volume fraction of combustion products is established by the Reynolds transport theorem. It emerges that the burned-mass fraction is led by the turbulent particle motion, by the flame front velocity, and by the mean curvature of the flame front.
Pagnini, Gianni, Bonomi, Ernesto
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MATEC Web of Conferences, 2018 Resistance is The article presents the results of the research of a charge swirl motion influence on working process, engine parameters and NOx emissions of a spark ignition premixed natural gas engine. The charge swirl motion was organized by tangential
Patsey Pavel, Galyshev Yuriy
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Comparison of Combustion Models for Lifted Hydrogen Flames within RANS Framework
Energies, 2019 Within the framework of a Reynolds averaged numerical simulation (RANS) methodology for modeling turbulence, a comparative numerical study of turbulent lifted H2/N2 flames is presented.
Ali Cemal Benim, Björn Pfeiffelmann
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Burning Rate in Impinging Jet Flames
Journal of Combustion, 2011 A method for evaluating burning velocity in premixed turbulent flames stabilized in divergent mean flows is quantitatively validated using numerical approximations of measured axial profiles of the mean combustion progress variable, mean and conditioned ...
A. N. Lipatnikov
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Energies, 2022 Three-dimensional Direct Numerical Simulations (DNS) data has been utilised to analyse statistical behaviours of the scalar dissipation rate (SDR) and its transport for homogeneous methane-air mixture turbulent Moderate or Intense Low oxygen Dilution ...
Frederick W. Young +4 more
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Numerical Simulations of Turbulent Combustion
Fluids, 2020 Turbulent burning of gaseous fuels is widely used for energy conversion in stationary power generation, e.g., gas turbines, land transportation, e.g., piston engines, and aviation, e.g., aero‐engine afterburners[...]
Andrei N. Lipatnikov
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Fuel Processing TechnologyChemiluminescence emitted by the de-excitation of excited hydroxyl radicals (OH*), allows for several insights into combustion processes. The presented study investigates air- and oxy-fuel combustion of natural gas with hydrogen enrichment up to 100 ...
Stefan Schwarz +7 more
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Energies, 2020 Diluting the combustion mixtures is one of the advanced approaches to reduce the NOx emission of methane/air premixed turbulent flame, especially with high diluents to create a distributed reaction zone and mild combustion, which can lower the ...
Li Yang +5 more
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Turbulent partially cracked ammonia/air premixed spherical flames
Fuel CommunicationsThe combustion of ammonia requires, for most energy conversion systems, a combustion promoter such as hydrogen to guarantee the start-up, stability and combustion efficiency.
S. Zitouni +2 more
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Ultra-Lean Premixed Turbulent Combustion: Challenges of RANS Modelling
Energies, 2022 The main challenge of improving spark ignition (SI) engines to achieve ever increasing thermal efficiencies and near-zero pollutant emissions today concerns developing turbulent combustion under homogeneous ultra-lean premixed mixtures (HULP).
Lorenzo Sforza +3 more
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