What causes deflagration to detonation?

Increasing temperature, particularly at high pressures, can initiate deflagration in the absence of air. In the presence of air or oxygen, TFE forms explosive mixtures. Detonation of a mixture of tetrafluoroethylene and oxygen can increase the maximum pressure to 100 times the initial pressure [30].

What is the process of detonation?

The detonation process is based on repetitive explosions or detonations of oxygen-fuel gas mixtures, rather than the continuous burning of a combustion flame, as in the HVOF process. Oxygen and acetylene are loaded into a long, water-cooled barrel with powder. The mixture is ignited and it explodes.

Why is detonation more efficient than deflagration?

A conventional turbine engine avoids damaging spikes in temperature and pressure by allowing the volume of gas to expand, which encourages even deflagration, the term for the rapid burning of the fuel-air mixture as it’s sprayed or injected into the combustor.

What reaction affects the explosive propagation reaction through a deflagrating explosive?

The propagation of an explosion reaction through a deflagrating explosive is based on thermal reactions. The explosive material surrounding the ini- tial exploding site is warmed above its decomposition temperature causing it to explode.

What is the difference between deflagration and detonation?

In its most benign form, a deflagration may simply be a flash fire. In contrast, a detonation is characterized by supersonic flame propagation velocities, perhaps up to 2,000 metres per second (4,500 mph), and substantial overpressures, up to 20 bars (290 psi).

What is the difference between an explosion and a deflagration?

Most “fires” found in daily life, from flames to explosions such as from black powder, are deflagrations. This differs from detonation, which propagates supersonically through shock waves, decomposing a substance extremely quickly.

What is the difference between deflagration and conflagration?

is that conflagration is a large fire extending to many objects, or over a large space; a general burning while deflagration is the act of deflagrating; an intense fire; a conflagration or explosion specifically, combustion that spreads subsonically via thermal conduction.

What is the difference between a deflagration and an detonation?

In its most benign form, a deflagration may simply be a flash fire. In contrast, a detonation is characterized by supersonic flame propagation velocities, perhaps up to 2,000 metres per second (4,500 mph), and substantial overpressures, up to 2 megapascals (290 psi).