deflagración

Deflagration is a rapid combustion process that propagates through a material at subsonic speeds. This means the flame front moves slower than the speed of sound in the unreacted material. Deflagration is characterized by a relatively slow pressure rise compared to detonation, which is a supersonic combustion phenomenon.

The process of deflagration involves a continuous input of heat from the burning material to the unburned material, which preheats and ignites it. This self-sustaining reaction can occur in gases, liquids, or solids. Common examples of deflagration include the burning of gunpowder, the explosion of flammable vapors in air, and the rapid burning of fine dusts in a confined space.

Factors influencing the speed and intensity of a deflagration include the type of fuel, its concentration, the presence of oxidizers, temperature, pressure, and the degree of confinement. In many industrial and domestic settings, deflagration hazards are a significant concern, requiring specific safety measures to prevent or mitigate their effects. These measures often involve ventilation, inerting, explosion venting, and suppression systems. While less destructive than detonations, deflagrations can still cause substantial damage and pose serious risks to life and property.