Full-field droplet velocity measurement of a spray by particle imaging displacement interferometry
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Previous works have utilized various methods to obtain data on the flow field of a spray, but overall data acquisition has been hampered by complicated and laborious analysis. The purpose of this work is to investigate the use of digital pulsed laser velocimetry in order to simplify data analysis and ease the transition into two phase studies of sprays and their interactions with their environments. High resolution (1024 × 1024) digital images of a spray field were analyzed using a cross-correlation technique. Each image contained a double exposure of the spray flow field. The cross-correlation technique has not previously been used on a double exposed digital image, but the results of the analysis demonstrated that the method, combined with digital pulsed laser velocimetry, has the potential of being a powerful, yet simple analysis tool for the study of complex turbulent flows.
author list (cited authors)
Delahunte, K. E., & Hassan, Y. A.