Abstract
Particle image velocimetry (PIV) was used to measure instantaneous and average particle velocity fields near the stagnation zone of a particle-laden impinging air jet. The results were compared with Lagrangian particle tracking measurements. Ensemble averages from the two methods agree well except in regions where particles have different histories, and a specific trajectory is dominant but not exclusive. The PIV autocorrelation method loses information regarding non-dominant particle trajectories. Thus, although instantaneous PIV measurements yield the dominant particle velocities correctly, the averaged measurements are biased in some regions.
Original language | English (US) |
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Pages (from-to) | 314-317 |
Number of pages | 4 |
Journal | Experiments in Fluids |
Volume | 20 |
Issue number | 4 |
DOIs | |
State | Published - Feb 1996 |