Measuring the temperature distribution in a laminar flame by laser-induced hydroxyl radical fluorescence

The results of experimental measurements of the flame temperature in the presence of an impact surface and a liquid phase added to the flow are presented. Methods based on laser-induced fluorescence were used to measure temperature. For a flame of a pre-mixed methane-air mixture with values of the stoichiometric coefficient $\Phi = 0.92$ and Reynolds number $\mathrm{Re} = 1000$, a reverse flow zone was detected near the impact surface in the case when this surface is located at a distance from the nozzle exit equal to three calibers. The temperature field of a gas-droplet flame was measured using the laser-induced fluorescence method