About Learn PIV
This website is intended as a tool for educators and interested learners to explore Particle Image Velocimetry or PIV. Specifically, the hope of this site is to reduce the “black box” effect of PIV algorithms and improve user experiences for educational to professional PIV. To accomplish this goal, the How PIV Works page is a good start. It provides a description of how PIV begins with a pair of images which capture the movement of small, illuminated particles in a flowing fluid. PIV algorithms then separate the two large images of interest into pairs of much smaller images, and estimates the movement of those particles in each of these smaller regions, providing the movement from the first image to the second image of that part of the flow! PIV Variable Description describes how different camera and flow inputs effect the images for PIV, where the goal is to make sure that the particles in these images are easily observed and may be tracked between images. The Experiment With a Single Variable page provides a simulation experiment to generate your own pair of smaller images, and explore the effect of changing a single parameter on the PIV algorithm results. Finally, the Experiment with Multiple Variables page lets users pick any variable of interest and observe the results, for comparing the combined effect of different parameters at once.
Funding
This work is supported by the U.S. Office of Naval Research Navy and Marine Corps Science, Technology, Engineering & Mathematics (STEM) Education, Outreach and Workforce Program, Grant Number N000141812770. The work is also supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE1745048. Any opinion, findings, conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the sponsors.
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