The Describing Function of Swirled Spray Flames

Abstract eng:
The dynamical response of flames is of central importance in combustion instability analysis. The response of swirl spray flames considered in this article is determined experimentally in the form of a Flame Describing Function for various flames. Using a generic injector comprising a swirler, a hollow cone pressurized injection unit and a diverging end cup it is shown that flame shapes are markedly influenced by the end piece angle and that this parameter induces important changes in the describing function. This information in combination with a dynamical model is used in a second stage to infer potential bands of instability in an annular combustor.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket