The aim of this work, which takes a RANS perspective, is to consider the prospect of establishing a planar turbulent triple flame whose mean consists of two parallel premixed flame brushes separated by a nonpremixed flame brush.
After a general formulation of the problem, we begin by an analysis of the one-dimensional case consisting of two parallel planar flames of unequal strength.
The crew left the village of Yarnell, where the fire started, and traveled parallel to the flames, building a fire line — a type of trench devoid of any vegetation or other fuel — as a way to contain the blaze.
The groundmass is vitroclastic, glassy to cryptocrystalline, showing a microtextural anisotropy defined by the parallel alignment of flames (flattened pumice and glass shards) and/or vesicles.
Results indicate that when a lean premixed flame interacts with a stratified slice parallel to the flame front, a specific shape is formed.
For three obstacle configurations, the merged jet flames, paralleling jet flames, and separated jet flames are observed after twin jet flames are formed downstream of the two slits.
In all cases, the statistics showed that the most extensive principal strain-rate associated with the turbulence preferentially aligned such that it was more perpendicular than parallel to the flame surface normal direction.
The rich premixed flame is parallel to the stoichiometric line, along which a diffusion flame burns the fuel left by this rich trailing flame, up to the very leading edge of the flame base.
Near quenching laminar flames in parallel plate and cylindrical ducts are investigated computationally using one-step chemistry and a two-dimensional finite volume formulation.
High temperature test was conducted under oxyacetylene torch, and the oxyacetylene flame was parallel to the as-received SiC coated C/C composites.
