Results 21 to 30 of about 635,474 (345)

The “turbulent flame speed” of wrinkled premixed flames

open access: yesComptes Rendus. Mécanique, 2012
The determination of the turbulent flame speed is a central problem in combustion theory. Early studies by Damköhler and Shelkin resorted to geometrical and scaling arguments to deduce expressions for the turbulent flame speed and its dependence on turbulence intensity.
Moshe Matalon, CRETA, Francesco
openaire   +1 more source

Small-scale Interaction of Turbulence with Thermonuclear Flames in Type Ia Supernovae [PDF]

open access: yes, 1999
Microscopic turbulence-flame interactions of thermonuclear fusion flames occuring in Type Ia Supernovae were studied by means of incompressible direct numerical simulations with a highly simplified flame description.
Eswaran V.   +7 more
core   +3 more sources

Spherical turbulent flame propagation of pulverized coal particle clouds in an O2/N2 atmosphere

open access: yesProceedings of the Combustion Institute, 2019
The present study aims to clarify the effects of turbulence intensity and coal concentration on the spherical turbulent flame propagation of a pulverized coal particle cloud.
K. Hadi   +3 more
semanticscholar   +1 more source

Closure Relations for Fluxes of Flame Surface Density and Scalar Dissipation Rate in Turbulent Premixed Flames

open access: yesFluids, 2019
In this study, closure relations for total and turbulent convection fluxes of flame surface density and scalar dissipation rate were developed (i) by placing the focus of consideration on the flow velocity conditioned to the instantaneous flame within ...
Andrei N. Lipatnikov   +2 more
doaj   +1 more source

Dataset for transient 3D simulations of turbulent premixed flames of Gas-to-Liquid (GTL) fuel

open access: yesData in Brief, 2021
A fan-stirred combustion vessel is used to study the premixed turbulent combustion of diesel, Gas to Liquids (GTL) and 50/50 diesel-GTL and to generate these datasets.
Abdellatif M. Sadeq   +2 more
doaj   +1 more source

Current State and Perspective of Turbulent Combustion Research

open access: yesJournal of Fluid Science and Technology, 2007
Recent progresses in turbulent combustion researches are summarized in this paper with a focus on direct numerical simulation (DNS), large eddy simulation (LES) and laser diagnostics of turbulent combustion.
Toshio MIYAUCHI, Mamoru TANAHASHI
doaj   +1 more source

Ultra-Lean Premixed Turbulent Combustion: Challenges of RANS Modelling

open access: yesEnergies, 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
doaj   +1 more source

DNS and Combined Laser Diagnostics of Turbulent Combustion

open access: yesJournal of Thermal Science and Technology, 2008
With the developments of computer technologies, three-dimensional direct numerical simulations (DNS) of turbulent combustion have been realized with a detailed or reduced kinetic mechanism.
Mamoru TANAHASHI   +3 more
doaj   +1 more source

Regulation of Wages and Hours Prior to 1938 [PDF]

open access: yes, 1939
Direct numerical simulations are performed to investigate the transient upstream propagation (flashback) of premixed hydrogen–air flames in the boundary layer of a fully developed turbulent channel flow.
Chen, Jacqueline H.   +3 more
core   +2 more sources

Acoustic power measurements of oscillating flames [PDF]

open access: yes, 1981
The acoustic power of an oscillating flame is measured. A turbulent premixed propane/air flame is situated near a pressure antinode of a standing wave in a laboratory combustion chamber. This standing wave is generated by a piston.
Valk, M.
core   +7 more sources

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