Results 11 to 20 of about 47,191 (297)

An Elementary Model for a Self-Accelerating Outward Propagating Flame Subject to the Rayleigh–Taylor Instability: Transition to Detonation

open access: yesFluids, 2020
Within the Boussinesq approximation, an elementary model for the deflagration-to-detonation transition triggered by self-acceleration of an expanding flame is formulated and explored.
Leonid Kagan, Gregory Sivashinsky
doaj   +1 more source

Dynamics of Laterally Propagating Flames in X-ray Bursts. I. Burning Front Structure [PDF]

open access: yes, 2019
We investigate the structure of laterally-propagating flames through the highly-stratified burning layer in an X-ray burst. Two-dimensional hydrodynamics simulations of flame propagation are performed through a rotating plane-parallel atmosphere ...
Cavecchi, Yuri   +5 more
core   +2 more sources

Analysis of flame acceleration induced by wall friction in open tubes [PDF]

open access: yes, 2010
Spontaneous flame acceleration leading to explosion triggering in open tubes/channels due to wall friction was analytically and computationally studied.
Akkerman, V.   +3 more
core   +1 more source

Quasi-steady stages in the process of premixed flame acceleration in narrow channels [PDF]

open access: yes, 2013
The present paper addresses the phenomenon of spontaneous acceleration of a pre-mixed flame front propagating in micro-channels, with subsequent deflagration-to-detonation transition. It has recently been shown experimentally [M. Wu, M. Burke, S.
Akkerman, V.   +4 more
core   +2 more sources

The effects of addition of carbon dioxide and water vapor on the dynamic behavior of spherically expanding hydrogen/air premixed flames

open access: yesJournal of Thermal Science and Technology, 2021
Utilizing efficiently and securely hydrogen as clean energy source, it is required not only to analyze the experimental data under a certain condition but also to create the mathematical model for the prediction of flame propagation velocity under ...
Toshiyuki KATSUMI   +8 more
doaj   +1 more source

On the Evolution of Thermonuclear Flames on Large Scales [PDF]

open access: yes, 2006
The thermonuclear explosion of a massive white dwarf in a Type Ia supernova explosion is characterized by vastly disparate spatial and temporal scales. The extreme dynamic range inherent to the problem prevents the use of direct numerical simulation and ...
Alexei M. Khokhlov   +4 more
core   +2 more sources

Experimental and numerical study of the accuracy of flame-speed measurements for methane/air combustion in a slot burner [PDF]

open access: yes, 2011
Measuring the velocities of premixed laminar flames with precision remains a controversial issue in the combustion community. This paper studies the accuracy of such measurements in two-dimensional slot burners and shows that while methane/air flame ...
Ferret, Bernard   +2 more
core   +1 more source

Numerical simulation of the influence of pipe length on explosion flame propagation in open-ended and close-ended pipes

open access: yesScience Progress, 2020
The pipeline length exerts great influence on flame propagation characteristics, Realizable k − ε model and Premixed combustion model were used to study the influence of pipe length on propane-air explosion flame in open-ended and close-ended pipes ...
Xue Li   +5 more
doaj   +1 more source

Upward flame spread over corrugated cardboard [PDF]

open access: yes, 2011
As part of a study of the combustion of boxes of commodities, rates of upward flame spread during early-stage burning were observed during experiments on wide samples of corrugated cardboard.
Gollner, MJ, Rangwala, AS, Williams, FA
core   +2 more sources

Influence of hydrodynamic processes on apparent flame velocity in accidental explosions [PDF]

open access: yesE3S Web of Conferences, 2023
The main impact factor of an accidental explosion is explosive pressure, the numerical value of which is determined by the magnitude of the apparent flame velocity during explosive combustion of an explosive mixture.
Komarov Aleksandr   +2 more
doaj   +1 more source

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