Fire Safety Science Digital Archive

For an axisymmetric, unconfined coflowlng laminar diffusion methane-air flame, the coupling procedure between flow and temperature fields via Boussinesq approximation in the momentum equations is considered in this paper. The projection method is used to solve the flow field equations with the pseudo-momentum equation and energy equations solved by the Douglas-Gunn time splitting method. Instead of considering the detailed chemical reactions and thermal radiation in the flame, we consider thermal buoyancy force as the leading driving force, and use experimental data to construct the thermal source term via a least squares technique, which, in tum, will help us to understand the chemical kinetics of flames.