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

publication date

  • February 2017

start page

  • 1

end page

  • 8

volume

  • 81

international standard serial number (ISSN)

  • 0894-1777

electronic international standard serial number (EISSN)

  • 1879-2286

abstract

  • This work measures the size distribution of the particles exiting a simple-design seeding generator. A simple model for the prediction of the droplet size mean diameter is checked against these measurements, giving good agreement. The main fields of use of these generators include tracer particles based optical measurements like Particle Image Velocimetry (PIV). This investigation provides results against which the performance of different seeding generators, liquids, etc., could be compared, at the exit of the aerosol generator. The developed generic seeding generator is thus suggested as a starting point for a basis for a future scalable standard seeding generator for other researchers investigating the production of aerosols for PIV application. The proposed generator is able to seed flows up to 0.2 kg/s with similar to 10 particles/mm(3), under normal operation conditions.

keywords

  • piv; particle seeding; tracers; propylene glycol; droplet size distribution; critical weber number; number; water