A two-equation soot-in-flamelet modeling approach applied under Spray A conditions

Soot production (including formation and oxidation) is studied in the transient, high-pressure turbulent n-dodecane Spray A flames from Engine Combustion Network (ECN) using computational fluid dynamics (CFD) simulations. two-equation soot-in-flamelet modeling approach applied within framework of Unsteady Flamelet Progress Variable (UFPV) model results are validated against experimental data. Equations for soot mass fraction number density derived mixture space solved context detailed flamelet calculations. Source terms different steps chemistry tabulated incorporated manifold. For reference condition, based on manifold reduces cost a CFD calculation by approximately 40 times compared to non-tabulated well-mixed (WM) approach. The then extended study effect ambient oxygen concentration, composition temperature production. Results show that able capture trends volume (SVF) with good quantitative agreement, especially ramp-up region.