Engineering Commons^™

Characterization And Control Of Carbon Dioxide Seed Particle Image Velocimetry, Bartt G. Greene

Theses and Dissertations

Particle Image Velocimetry (PIV) data was acquired in two separate supersonic wind tunnels with carbon dioxide (CO₂) particles utilized as the seed material. Previous work in clean seeding showed CO₂ could be used as seed material to produce velocity maps. This research provides the first quantitative assessment of particle response, particle size control via purge gas, and scalability using CO₂ particles. A variety of feed tube and shroud configurations, in combination with varying volumetric flow rates of purge air were measured using a laser diffraction device. The CO₂ particles were injected into the stilling chamber …