Enstrophy evolution during head-on wall interaction of premixed flames within turbulent boundary layers

The statistical behaviors of mean enstrophy and its evolution during head-on interaction premixed flames propagating toward a chemically inert flat wall across the turbulent boundary layer have been analyzed using direct numerical simulations for friction velocity-based Reynolds number [Formula: see text]. dynamics both isothermal adiabatic thermal conditions. contributions vortex-stretching viscous dissipation are found to be leading order source sink, respectively, transport in non-reacting reacting flows irrespective condition. However, due dilatation rate baroclinic torque play important roles addition terms flames. condition has demonstrated affect near-wall behavior contribution rate, which also affects distribution enstrophy. magnitudes contributors decrease with progress Moreover, overall sink dominate over contributions, giving rise drop interaction. changes significantly flame-wall interaction, gives modification relative proportion coherent structures flow compared corresponding features.