Modeling pressure effects on the turbulent burning velocity for lean hydrogen/air premixed combustion

We investigate and model pressure effects on the turbulent burning velocity over a range of pressures turbulence intensities with direct numerical simulation (DNS) statistically planar premixed flames for lean hydrogen/air mixture. DNS results indicate that stretch factor has an impact flame surface area at elevated pressures. In particular, enhanced high increases ratio laminar velocities, diminishing “bending” effect. Based good consistency between velocities respect to stretch, lookup table formed by data is employed in various A predictive then developed combining sub models area. The overall agreement predictions demonstrates proposed able quantitatively predict homogeneous isotropic turbulence.