Most flames fall into two general classes: premixed and diffusion. In diffusion flames, the fuel and the oxidizer — typically, oxygen — are initially separate, limiting how fast the fire can burn.

For one, the apparatus can literally fan the flames of a fire by directing air — and therefore, oxygen — toward it. The Mir space station, seen here, experienced a fire onboard in 1997 ...

To learn how they function, these ‘cool diffusion flames’ (their official title, aka CDFs) “require long residence times, which is difficult when buoyancy is present,” Sunderland said.

Electric-Field Effects on Laminar Diffusion Flames (E-FIELD Flames) — Demonstrated the potential use of electric fields to reduce emissions from non-premixed flames. 2.

Premixed and Diffusion Flames In a premixed flame, the fuel and oxidizer are mixed before reaching the flame. The stoichiometry of the mixture can be controlled by changing the fuel to oxidized ratio, ...

In diffusion flames, oxygen and fuel diffuse into each other, and the flame itself forms where they meet. Oxygen and fuel can also be premixed, creating a moving flame front driven by thermal ...

A flame can have two distinct regions: pre-mixed and diffusion. A burning candle experiences a diffusion flame because it occurs at the interface between the fuel and the oxidant.

Diffusion-type flame, where fuel and air mixing takes place via diffusion, requires a diluent into the reaction zone to control nitrogen oxides. Silo-type combustors are diffusion combustors, ...

Cool flames, which burn at ... University of Maryland researcher Peter Sunderland, used microgravity conditions on the space station to produce cool diffusion flames from liquid fuel for the first ...

The flame persists because of the diffusion of oxygen, with random oxygen molecules drifting into the fire. Absent the upward flow of hot air, ...