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The use of particle image velocimetry in the measurement of sound fields.
| Content Provider | CiteSeerX |
|---|---|
| Author | Sharp, David B. Tonddast-Navaei, Ali |
| Abstract | Particle Image Velocimetry (PIV) is a non-intrusive technique for simultaneously measuring the velocities at many points in a fluid flow. The fluid is seeded with tracer particles and the region under investigation is illuminated. An image of the illuminated region is captured and then, a short time period later, a second image is taken. Suitable analysis of these images yields an instantaneous velocity vector map. Until recently, restrictions in the rate at which images could be captured have limited the PIV technique to the analysis of slow flows. However, advances in digital camera technology have now opened up the possibility of using PIV in the analysis of faster flows and sound fields. In this paper, the principles of the PIV technique are described, focussing in particular on how a velocity vector map is calculated from the two captured images. Some of the problems associated with acoustic PIV measurements are raised. Finally, potential applications in the musical acoustics field are discussed. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Faster Flow Many Point Musical Acoustic Field Second Image Velocity Vector Map Non-intrusive Technique Potential Application Particle Image Velocimetry Fluid Flow Sound Field Illuminated Region Short Time Period Instantaneous Velocity Vector Map Tracer Particle Slow Flow Suitable Analysis Digital Camera Technology Acoustic Piv Measurement Piv Technique |
| Content Type | Text |
