Numerical simulation of Burke-Schumann diffusion flames using finite-rate chemical kinetics.

摘要

A time-accurate numerical code is developed for simulation of axisymmetric jet diffusion flames. The numerical model adopts a semi-implicit time marching and a finite-difference method for spatial discretization. A higher-order accurate and oscillation-free solution is established by applying a higher-order differencing scheme and flux-corrected transport to the convection flux. The assessment on the order of accuracy shows that a higher-order spatial differencing scheme is required; whereas a first-order temporal differencing scheme is adequate for prediction of the near laminar Burke-Schumann diffusion flame.;The numerical code includes finite-rate chemistry models to account for methane oxidation, NO;The current model successfully predicts the NO