Influence of computational aspects on simulations of a turbulent jet diffusion flame Available to Purchase

The influence of computational aspects on simulation results is quantitatively investigated for the specific case of a turbulent piloted jet diffusion flame (Sandia Flame D). It is illustrated that, with a fixed turbulence and chemistry model, the results can heavily depend on the numerical aspects. The influence of inlet boundary conditions has already been discussed in an earlier paper. In this work, attention is focused onto the order of accuracy of the spatial discretization in the numerical scheme and onto the position of the outlet boundary. It is stressed that the purpose is not to judge the quality of the applied models, but to illustrate the possible impact of numerical influence factors. The conclusion is a warning message and a demonstration that all numerical aspects must be completely described when calculation results are presented.