Full text: Download
A methodology based on the Reynolds analogy was developed earlier that allowed for the estimation of local mass burning rates and heat fluxes in free-convection laminar boundary-layer diffusion flames. It was observed that the same relationship works in estimating the local mass burning rates and heat fluxes in a forced-convective environment using methanol as a liquid fuel. While the initial study was taken in the laminar regime, further extensions of the technique will be applicable to turbulent boundary layer combustion. The gas phase temperature profiles across the laminar boundary layer with a methanol diffusion flame established over it were measured with the free stream air flowing parallel to the condensed fuel surface. Local and averaged mass burning rates were measured along with shear stresses at the fuel surface. The fuel consumption rate and flame lengths were observed to increase monotonically with an increase in the free-stream velocity.