Results 251 to 260 of about 47,191 (297)
Flame–turbulence interactions during flame acceleration using solid and fluid obstacles [PDF]
Physics of Fluids, 2022 A combination of solid and transverse jet obstacles is proposed to trigger flame acceleration and deflagration-to-detonation transition (DDT). A numerical study of this approach is performed by solving the reactive Navier–Stokes equations deploying an adaptive mesh refinement technique.
Wandong Zhao +4 more
openaire +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Physical Mechanism of Ultrafast Flame Acceleration
Physical Review Letters, 2008We explain the physical mechanism of ultrafast flame acceleration in obstructed channels used in modern experiments on detonation triggering. It is demonstrated that delayed burning between the obstacles creates a powerful jetflow, driving the acceleration. This mechanism is much stronger than the classical Shelkin scenario of flame acceleration due to
Vitaly, Bychkov +2 more
openaire +2 more sources
Accelerating flames in tubes—an analysis
Proceedings of the Combustion Institute, 2007Abstract Flame acceleration in tubes is studied. A tube filled with flammable mixture is closed at one end and open to the atmosphere at its second end. When ignition takes place near the closed end, it is well-known from experiments that the flame may accelerate, oscillate and eventually reach considerable speeds.
C. Regis L. Bauwens +2 more
openaire +1 more source
Turbulent and accelerating dust flames
Symposium (International) on Combustion, 1985Industrial dust explosions kill and severely injure workers as well as destroy property. While the hazards of gaseous explosions are well recognized, the same degree of care has not been exercised with regard to combustible dust. The agricultural industry has been especially plagued by this problem.
C.W. Kauffman +4 more
openaire +1 more source
New Acceleration Techniques at INFN with FLAME
AIP Conference Proceedings, 2010INFN, in the frame of the Strategic Project PLASMONX, is developing New Acceleration Techniques based on Laser Produced Plasmas. The activity is carried out jointly with CNR and a few Italian Universities. The first results obtained in a collaborating small‐scale laboratory (ILIL‐CNR) aim to optimize the physical conditions and related diagnostics for ...
Danilo Giulietti, Dan Dumitras
openaire +2 more sources
Acceleration of a flame by flame- vortex interactions
Combustion and Flame, 1990The acceleration of a premixed flame propagating in a planar channel past stationary obstacles is investigated using a computer model based on combining the discrete vortex method with a flame interface algorithm. Results presented in this article show that the initial acceleration of the flame is caused by the sudden contraction of the flow due to the
openaire +1 more source
Role of compressibility in moderating flame acceleration in tubes
Physical Review E, 2010The effect of gas compression on spontaneous flame acceleration leading to deflagration-to-detonation transition is studied theoretically for small Reynolds number flame propagation from the closed end of a tube. The theory assumes weak compressibility through expansion in small Mach number.
Vitaly, Bychkov +3 more
openaire +2 more sources
Self-acceleration of nuclear flames in supernovae
Space Science Reviews, 1995The speed of the laminar flame in a degenerate carbon-oxygen white dwarf is too slow to produce a Type I supernova. We draw attention to the role of the Landau instability in wrinkling the flame front. This roughening of the front surface can cause an appreciable enhancement in the flame velocity.
S. I. Blinnikov +2 more
openaire +1 more source
Model of accelerating coal dust flames
Combustion and Flame, 1985Abstract A model describing turbulent coal dust flame propagation and accelaration is based on the transient, macroscopic equations of change. The turbulent flame velocity was obtained from a simple correlative technique combining turbulence and chemical effects. Predictions indicate that a deflegrating coal dust flame can accelerate to high velocity
Dwight P. Clark, L.Douglas Smoot
openaire +1 more source
The acceleration of flame propagation in a tube by an obstacle
Combustion and Flame, 1991Abstract A quantitative determination was made of the effect of a single baffle of on the characteristics of gas explosions in a 76-mm-diameter closed vessel of large length to diameter ratio ( L D = 21.6 ). Mixtures of methane-air were predominantly used, but other gases were also investigated.
H. Phylaktou, G.E. Andrews
openaire +1 more source