Accreting carbon-oxygen white dwarfs approaching the Chandrasekhar mass may provide a substantial fraction of Type Ia supernovae. The hydrodynamics of nuclear burning in these models remains uncertain, but all current models are characterized by an initial period of slow, nearly laminar Ñame propagation at a well-known conductive speed. For cold white dwarfs and slow accretion, the density at t...

Local time-resolved measurements of fast reversal of the magnetization of single crystals of Mn12-acetate indicate that the magnetization avalanche spreads as a narrow interface that propagates through the crystal at a constant velocity that is roughly 2 orders of magnitude smaller than the speed of sound. We argue that this phenomenon is closely analogous to the propagation of a flame front (d...

Presented in the article are design and operation principles of ion sensors intended for detecting propagating reaction fronts, deflagration/detonation mode, apparent subsonic/supersonic propagation velocity front, duration heat release by measuring current reactive medium. The electrical circuits without with intermediate amplifiers, short response time high sensitivity, as well very wide dyna...

One of the fundamental mechanisms for detonation initiation is deflagration-to-detonation transition (DDT). This research experimentally explores runaway condition highly turbulent fast flames before DDT, which are characterized by extremely high flame speeds. Such experience increased effects compressibility and may develop a acceleration combined with pressure buildup that leads to turbulence...

The present study discusses experiments on organic dust explosions in a setup with low wall influence. proposed apparatus decouples the dispersion and deflagration event two separate compartments. use of continuous-wave laser to illuminate centre plane observation chamber allows capturing both, cloud flame during same experiment eliminates typical problems caused by limited dynamic range high-s...