Study on Droplet Evaporation Behavior Entered in Laminar Counterflow Flame

Abstract

To clarify effects of fuel supply rate on the evaporation behavior of surrogate fuel, laser diagnostics with high time resolution have been performed to the spray flame stabilized in a laminar counterflow field. The initial droplet size distribution is measured by phase Doppler anemometry (PDA) and the time evolution of droplet diameter is measured by interferometric laser imaging droplet sizing (ILIDS). The evaporation rate coefficient is calculated using measured values. Results show that whereas surrogate fuel has a higher evaporation rate coefficient in low fuel flow rate (i.e. low number density of fuel droplet), that tendency becomes less remarkable in high fuel flow rate.