Generation and droplet size distribution of tracer particles for PIV measurements in air, using propylene glycol/water solution

The study also shows that the volumetric concentration of the tracer particles in the generated aerosol is not much sensitive to feeding air pressure. Once the mean droplet size has been stablished with the previously commented method, this offers the possibility of estimating the number of particles generated and, thus, establishing design rules or fluid selection criteria for seeding generators or other similar devices. For feeding pressures from 2 to 6 barg, particle quantity generation is in the order of 108 particles/s per ∅ 0.5 mm nozzle.