Measurement of digital particle image velocimetry precision using electro-optically created particle-image displacements
dc.contributor.author | Megerle, Marcus | en_US |
dc.contributor.author | Sick, Volker | en_US |
dc.contributor.author | Reuss, David L. | en_US |
dc.date.accessioned | 2006-12-19T19:11:14Z | |
dc.date.available | 2006-12-19T19:11:14Z | |
dc.date.issued | 2002-07-01 | en_US |
dc.identifier.citation | Megerle, Marcus; Sick, Volker; Reuss, David L (2002). "Measurement of digital particle image velocimetry precision using electro-optically created particle-image displacements." Measurement Science and Technology. 13(7): 997-1005. <http://hdl.handle.net/2027.42/49061> | en_US |
dc.identifier.issn | 0957-0233 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/49061 | |
dc.description.abstract | The displacement (velocity) precision achieved with digital particle image velocimetry (PIV) was measured. The purpose of this work was to determine the precision and sensitivity of digital PIV using real rather than theoretical images at 1 and 2 mm spatial resolution. The displacement measurement precision was determined by measuring the RMS noise from 60 identical displacement distributions. This work is unique in that it uses electro-optical image shifting to create a repeatable image displacement distribution of random particle fields. The displacement variance between images is caused by the shot-to-shot variation in: (1) the particle-image fields, (2) the camera noise and (3) the variance in the correlation peak detection. In addition to magnification variations, the particle-number density, imaging-lens f-stop and image-plane position errors were varied to determine the best configuration. The results indicate that both the ensemble-mean and the RMS fluctuations of the image displacements are affected by these parameters and comparisons with results found in the literature are presented. The extents of these variations are quantified. This variance does not, of course, include errors due to random gradients and out-of-plane pairing losses, which exist in real turbulent flows. | en_US |
dc.format.extent | 3118 bytes | |
dc.format.extent | 254521 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en_US | |
dc.publisher | IOP Publishing Ltd | en_US |
dc.title | Measurement of digital particle image velocimetry precision using electro-optically created particle-image displacements | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationother | Sandia National Laboratories, Combustion Research Facility, MS-9053, PO Box 969, Livermore, CA 94551-0969, USA | en_US |
dc.contributor.affiliationother | Department of Mechanical Engineering, The University of Michigan, 2202 GG Brown Building, 2350 Hayward Street, Ann Arbor, MI 48109-2125, USA; | en_US |
dc.contributor.affiliationother | General Motors R&D Center, 30500 Mound Road 106, Mail Code 480-106-252, Warren, MI 48090-9055, USA | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/49061/2/e20705.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1088/0957-0233/13/7/305 | en_US |
dc.identifier.source | Measurement Science and Technology. | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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