Scanned multi-light-emitting-diode illumination for volumetric particle image velocimetry

Reference:

Patterson, M. D. and Wettlaufer, J. S., 2010. Scanned multi-light-emitting-diode illumination for volumetric particle image velocimetry. Review of Scientific Instruments, 81 (9), 096101.

Related documents:

PDF (Patterson_RevSciInst_2010.pdf) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader Download (679kB)

Official URL:

http://dx.doi.org/10.1063/1.3480544

Abstract

We describe the development of both multilevel two-dimensional and grid-based three-dimensional illumination systems for volumetric particle image velocimetry (PIV) that uses a single camera and an arbitrary number of low powered lasers. This flexible system is robust and capable of capturing results over a range of spatiotemporal scales determined by the choice of camera, the depth of field of the lens, and the laser power. The system is demonstrated on a rotating spin-up experiment where we extract high fidelity velocity fields at up to 62 frames/s at a spatial resolution of 2352×1728 pixels. The flexibility and economy offered by this system—approximately one-tenth that of a comparable commercial package—may make it attractive to many laboratory users.

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