Transported PDF Modelling of a High Velocity Bluff-Body Stabilised Flame (HM2) Using Detailed Chemistry

摘要: A transported probability density function (PDF) approach closed at the joint scalar level was used to model a bluff body stabilised turbulent diffusion flame (HM2) investigated experimentally by Masri and co-workers. The current effort extends previous study of HM1 (Re = 15,800) with higher degree local extinction 23,900). impact an algebraic that accounts for Damkohler number effects on time-scale ratio mechanical turbulence is also evaluated along improved thermochemistry. computations have been performed using hybrid Monte Carlo/finite volume algorithm systematically reduced H/C/N/O mechanism featuring 300 reactions, 20 solved 28 steady-state species. PDF equations were moving particles in Lagrangian framework velocity field second moment level. redistribution terms modelled Generalized Langevin Haworth Pope. Results show fields are reproduced encouraging accuracy revised time scale improves agreement experimental data. high sensitivity NO chemistry observed obtained first two moments following adoption updated reaction rates proposed earlier study.