The planar Particle Image Velocimetry (PIV) technique has been used to study a jet flow of air. The nozzle diameter is 5 cm and output velocity ranged from 8 to 160 m/s corresponding to diameter based Reynolds number 2.6·104 – 5.5·105. The spatial resolution is 0.9 mm per Interrogation Area (IA) in all cases, which does not allow us to distinguish small vortices, but the development at scale comparable to the nozzle diameter can be studied.
Topics
Flow visualization
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