A Numerical Study of Flow Structures and Flame Shape Transition in Swirl-Stabilized Turbulent Premixed Flames Subject to Local Extinction

• Published in: Combustion science and technology Vol. 197; no. 2; pp. 338 - 370
• Main Authors: Tomasch, Stefanie, Swaminathan, Nedunchezhian, Spijker, Christoph, Ertesvåg, Ivar S.
• Format: Journal Article
• Language: English
• Published: New York Taylor & Francis 25.01.2025; Taylor & Francis Ltd
• Subjects: Cold flow; dissipation; Entrainment; Extinguishing; Large eddy simulation; Lean premixed combustion; LES; OpenFOAM; Position measurement; Premixed flames; progress variable reaction rate; Reacting flow; Shape; Shape effects; Shear flow; Shear layers; Swirling; Turbulent flow; Vertical loads

Large Eddy Simulations (LES) of turbulent lean-premixed flames of V- and M-shape are presented. A simple algebraic closure with the ability to capture finite-rate chemistry effects is used for subgrid reaction rate modeling. The V-shaped flame is stabilized in the inner shear layer between a swirlin...