Tomographic Time-Resolved Laser-Induced Incandescence

摘要

Three ultra-high-speed, 10 MHz, cameras imaged the time-resolved decay of laser-induced incandescence (III) from soot in a turbulent non-premixed ethylene jet flame. Cameras were equipped with a stereoscope allowing each CMOS array to capture two separate views of the flame. The resulting six views were reconstructed into a volumetric soot decay series using commercially available Da Vis tomographic software by La Vision. Primary soot particle sizes were estimated from the decay time history on a per voxel basis by comparing measured signals to an LII model. Experimentally quantified soot particle sizes agree with existing predictions and previous measurements.