A recently discovered soot-free flame called the blue flame – which consumes all the fuel it encounters – is actually composed of three different flame structures swirling together into a color ring. The blue color of another world, according to the first research that determines how these unique flames form. By revealing the structure of the blue vortex, the finding can indicate potential uses of the flame for efficient, low-emission burning.
“Only by understanding its structure will we be able to tame, scale and create it as we wish,”; wrote Joseph Chung and colleagues in the study.
Scientists have recently discovered the formation of a blue vortex while experimenting with swirls of fire created by burning liquid hydrocarbon fuel on water. But while further investigations have since generated temperature maps of the blue vortexes and announced how they could be stabilized, their flame structures and dynamics – especially how they come from a vortex of fire – still a mystery.
To simulate how blue vortices appear, Chung et al. Combining time-dependent equations, 3D describes the movement of viscous fluids to a model to convert fuel and release chemical energy. The researchers started by simulating test conditions, then adjusting physical parameters such as fuel, air size, and velocity in their calculations until they realized a bout. blue whirlwind.
The researchers found that the ethereal flame consists of three different flames: a diffuse flame, in which the fuel and oxidants are separated before burning, and that the flame is rich in mixture (with the fuel. excess) and lean flame (with excess air). Chung et al. They conclude that their research provides a tool to further explore this phenomenon, including whether the flame can be created directly and safely expanded to larger dimensions. .
Reference: August 12, 2020, Scientific advance.
DOI: 10.1126 / sciadv.aba0827