CALCULATION OF A CONFINED AXISYMMETRICAL LAMINAR DIFFUSION FLAME USING A LOCAL GRID REFINEMENT TECHNIQUE

In this paper a laminar diffusion flame is predicted using a local gri d refinement technique and non-staggered meshes. A single coarse grid covers the whole domain and local grid refinement is carried out in th e regions of high gradients without changing the basic grid structure. The Navier-Stokes, the energy and the chemical species transport equa tions are solved and a finite rate chemical kinetics combustion model is employed. Transport equations for the species concentration are sol ved using a pseudo time splitting technique. The predictions are in go od agreement with the experimental measurements for a confined laminar methane flame. The numerical method proved to be robust and accurate.