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Effects of preferential diffusion and flame stretch on FGM method for numerical simulations of ammonia/air premixed combustion

open access: yesApplications in Energy and Combustion Science
Importance of the considerations of preferential diffusion and flame stretch effects in the flamelet-generated manifold (FGM) method on the prediction accuracy is investigated by two-dimensional numerical simulations of cylindrical NH3/air premixed ...
Reo Kai   +3 more
doaj   +1 more source

Investigation of differential diffusion in lean, premixed, hydrogen-enriched swirl flames

open access: yesApplications in Energy and Combustion Science
Hydrogen combustion is a promising alternative to fossil fuel combustion in an effort to reduce our carbon footprint. However, hydrogen combustion is prone to thermodiffusive instabilities largely dependent on differential diffusion, a phenomenon that ...
Benjamin Francolini   +5 more
doaj   +1 more source

On the Noise of Diffusion Flames

open access: yesTransactions of the Japan Society of Mechanical Engineers, 1964
The mechanism of the generation and the characteristics of the noise associated with combustion are studied. It is shown that the dominant factors on the generation of the combustion noise are the velocity turbulences and the entropy turbulences, acting as equivalent acoustic dipoles and monopoles, respectively.
KOTAKE, Susumu, HATTA, Keizo
openaire   +3 more sources

Impact of low-pressure conditions on flame width and volume of buoyant methane laminar diffusion flames

open access: yesCase Studies in Thermal Engineering
In this work, an experimental investigation of the main morphological parameters of buoyant methane laminar diffusion flames, including flame width and flame volume, is carried out under various sub-pressures (20-100 kPa).
Jinfei Zhao   +3 more
doaj   +1 more source

Effects of Water Mist on the Initial Evolution of Turbulent Premixed Hydrogen/Air Flame Kernels

open access: yesEnergies
In this study, a series of carrier-phase direct numerical simulations are conducted on spherical expanding premixed hydrogen/air flames with liquid water addition.
Riccardo Concetti   +3 more
doaj   +1 more source

Choice of reaction progress variable under preferential diffusion effects in turbulent syngas combustion based on detailed chemistry direct numerical simulations

open access: yesScientific Reports
The combustion of hydrogen and carbon-monoxide mixtures, so-called syngas, plays an increasingly important role in the safety context of non-fossil energy generation, more specifically in the risk management of incidents in process engineering plants for
Vinzenz Silvester Wehrmann   +3 more
doaj   +1 more source

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