Flame stability under flow-induced anisotropic diffusion and heat loss

Article Thermodynamics

Effects of thermal expansion on Taylor dispersion-controlled diffusion flames

Prabakaran Rajamanickam et al.

Summary: The theoretical analysis investigates the effects of gas expansion due to heat release on unsteady diffusion flames evolving in a pipe flow. It extends a previously developed theory based on the thermo-diffusive model by considering Taylor's dispersion processes controlling the mixing of reactants. Corrections to the velocity components and the leading-order mixing variables are solved for a Burke-Schumann flame, showing quantitative and sometimes qualitative departures from predictions based on the thermo-diffusive model due to the dependence of effective Taylor diffusion coefficients on gas density.

COMBUSTION THEORY AND MODELLING (2022)

添加到收藏夹

Article Thermodynamics

Effect of Taylor dispersion on the thermo-diffusive instabilities of flames in a Hele-Shaw burner

Joel Daou

Summary: This study examines the impact of Taylor dispersion on the thermo-diffusive instabilities of premixed flames, revealing its ability to significantly affect flame stability with a preference for promoting cellular instability over oscillatory instability. The analysis, conducted in a Hele-Shaw burner configuration, provides both experimental and theoretical insights into the interaction between Taylor dispersion and Turing-like instabilities in reaction-diffusion systems.

COMBUSTION THEORY AND MODELLING (2021)

添加到收藏夹

Article Thermodynamics