Results 151 to 160 of about 1,904 (180)
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Propagation of Spherically Expanding Turbulent Flames into Fuel Droplet-Mists
Flow, Turbulence and Combustion, 2019The effects of droplet diameter and the overall (liquid+gas) equivalence ratio on flame topology and propagation statistics in spherically expanding turbulent n-heptane spray flames have been analysed based on three-dimensional Direct Numerical Simulations (DNS) data.
Ozel-Erol G +3 more
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Cellular Instabilities in Spherically Expanding Hydrogen-Oxygen-Carbon Dioxide Flames
ASME 2023 ICE Forward Conference, 2023Abstract Hydrogen (H2) has several properties that make it a promising alternative fuel. It is carbon-free, has a high gravimetric energy density, and can be compatible with some existing conversion technologies. However, there are several challenges in its large-scale use, such as a high flammability envelope and fundamentally different
Behlol Nawaz +3 more
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Combustion and Flame, 2020
Abstract The evolution of the self-acceleration of spherically expanding flames subjected to cellular instabilities was experimentally studied with H2/O2/N2 mixtures over a wide range of Lewis numbers, flame thicknesses, and density ratios. Results show that the flames manifest a self-similar acceleration behavior, and the acceleration exponent, α ...
Xiao Cai +5 more
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Abstract The evolution of the self-acceleration of spherically expanding flames subjected to cellular instabilities was experimentally studied with H2/O2/N2 mixtures over a wide range of Lewis numbers, flame thicknesses, and density ratios. Results show that the flames manifest a self-similar acceleration behavior, and the acceleration exponent, α ...
Xiao Cai +5 more
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Proceedings of the Combustion Institute, 2019
Abstract Laminar burning velocities are of great importance in many combustion models as well as for validation and improvement of chemical kinetic schemes. Determining laminar burning velocities with high accuracy is quite challenging and different approaches exist.
J. Beeckmann +5 more
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Abstract Laminar burning velocities are of great importance in many combustion models as well as for validation and improvement of chemical kinetic schemes. Determining laminar burning velocities with high accuracy is quite challenging and different approaches exist.
J. Beeckmann +5 more
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Spherical expanding flames in H2–N2O–Ar mixtures: flame speed measurements and kinetic modeling
International Journal of Hydrogen Energy, 2009Abstract Although ignition of hydrogen–nitrous oxide mixtures is a serious issue for nuclear waste storage and semi-conductor manufacturing, available flame speed data have not been recently updated and thermodiffusive stability is not known. In order to palliate this, the flame speed of a hydrogen–nitrous oxide mixture diluted in Ar (60% mol) was ...
R. Mével +4 more
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End-gas autoignition investigations using confined spherically expanding flames
2021Propagation of a confined spherically expanding flame induces isentropic compression that can culminate in autoignition and/or detonation under conducive thermodynamic conditions. This relatively simple technique measures a distinct ?characteristic ignition delay time?
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