Results 41 to 50 of about 32,275 (199)
The Three Dimensional Evolution to Core Collapse of a Massive Star [PDF]
, 2015 We present the first three dimensional (3D) simulation of the final minutes of iron core growth in a massive star, up to and including the point of core gravitational instability and collapse.
Arnett, W. David +3 more
core +2 more sources
Fluids, 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
The influence of turbulence on the structure and propagation of enclosed flames [PDF]
, 1966 Although it has long been established that burning rates can be appreciably increased by turbulence, the actual extent of this increase and the precise mechanism involved are still far from clear.
Lefebvre, A. H., Reid, R.
core +1 more source
The Burning Velocity of Pulverised Biomass: the Influence of Particle Size
Chemical Engineering Transactions, 2016 The use of pulverised biomass as a replacement for coal in power generation is a major source of renewable electricity in the UK. However, there is little data on flame propagation rates for pulverised biomass and this makes it difficult to design ...
M. Saeed +4 more
doaj +1 more source
Reconciling turbulent burning velocity with flame surface area in small-scale turbulence [PDF]
Journal of Fluid Mechanics, 2018 A discrepancy between the enhancement in overall burning rate and the enhancement in flame surface area measured for high-intensity turbulence is addressed. In order to reconcile the two quantities, an additional contribution from the effective turbulent diffusivity is considered.
G. V. Nivarti, R. S. Cant, S. Hochgreb
openaire +2 more sources
Thermonuclear .Ia Supernovae from Helium Shell Detonations: Explosion Models and Observables [PDF]
, 2010 During the early evolution of an AM CVn system, helium is accreted onto the surface of a white dwarf under conditions suitable for unstable thermonuclear ignition.
Bildsten, Lars +4 more
core +1 more source
, 2003 We present a numerical investigation of the cellular burning regime in Type Ia supernova explosions. This regime holds at small scales (i.e. below the Gibson scale), which are unresolved in large-scale Type Ia supernova simulations.
Hillebrandt, W. +2 more
core +2 more sources
Letter: Does flame-generated vorticity increase turbulent burning velocity? [PDF]
Physics of Fluids, 2018 Direct numerical simulation data obtained from a statistically stationary, 1D, planar, weakly turbulent, premixed flame, which is associated with the flamelet combustion regime, are analyzed in order to show that generation of vorticity due to baroclinic torque within flamelets can impede wrinkling the reaction surface, reduce its area, and decrease ...
A. N. Lipatnikov +3 more
openaire +1 more source
The Propagation Characteristics of Turbulent Expanding Flames of Methane/Hydrogen Blending Gas
EnergiesIn the present study, the effect of hydrogen addition on turbulent flame propagation characteristics is investigated in a fan-stirred combustion chamber.
Haoran Zhao +3 more
doaj +1 more source
Turbulent convection in stellar interiors. III. Mean-field analysis and stratification effects
, 2013 We present 3D implicit large eddy simulations (ILES) of the turbulent convection in the envelope of a 5 Msun red giant star and in the oxygen-burning shell of a 23 Msun supernova progenitor.
Arnett, David +3 more
core +1 more source