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Willert, Chr. (1997) The Fully Digital Evaluation of Photographic PIV Recordings. Applied Scientific Research, pp. 79-102. Kluwer Academic Publishers, P.O.Box 17, 3300 AA Dordrecht.
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Abstract
The performance of a purely digital evaluation system for photographic PIV recordings is described. High resolution digital images are obtained from the 35 mm negatives using a commonly available slide scanner. Together with the continually improving capabilities of standard computers, this evaluation system is a cost effective alternative to the traditional analog optical/digital (Young's fringe method) and purely optical PIV interrogation systems.Compared to the optical systems the fully digital evaluation can provide a higher spatial ressolution while maintaining a similar measurement uncertainty. Using actual PIV recordings absolute measurement uncertainties are obtained and further predictions towardoptimal displacement data recovery are made with the aaid of Monte-Carlo simulations. Measurement uncertainties are minimized for particle image diameters on the order of 2 pixels while the reductionof the image depth (i.e. bits/pixel) has little effect.
| Item URL in elib: | https://elib.dlr.de/37563/ | ||||||
|---|---|---|---|---|---|---|---|
| Document Type: | Article | ||||||
| Additional Information: | LIDO-Berichtsjahr=1997, | ||||||
| Title: | The Fully Digital Evaluation of Photographic PIV Recordings | ||||||
| Authors: |
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| Date: | 1997 | ||||||
| Journal or Publication Title: | Applied Scientific Research | ||||||
| Refereed publication: | Yes | ||||||
| Open Access: | No | ||||||
| Gold Open Access: | No | ||||||
| In SCOPUS: | No | ||||||
| In ISI Web of Science: | Yes | ||||||
| Page Range: | pp. 79-102 | ||||||
| Publisher: | Kluwer Academic Publishers, P.O.Box 17, 3300 AA Dordrecht | ||||||
| Series Name: | Vvol. 56 | ||||||
| Status: | Published | ||||||
| Keywords: | particle image velocimetry, high resolution scanner, crosscorrelation, spatial resolution, measurement uncertainty | ||||||
| HGF - Research field: | UNSPECIFIED | ||||||
| HGF - Program: | Aeronautics | ||||||
| HGF - Program Themes: | other | ||||||
| DLR - Research area: | UNSPECIFIED | ||||||
| DLR - Program: | L SI - Versuchs- und Simulationstechniken | ||||||
| DLR - Research theme (Project): | UNSPECIFIED | ||||||
| Location: | Köln-Porz , Braunschweig , Göttingen | ||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik | ||||||
| Deposited By: | DLR-Beauftragter, elib | ||||||
| Deposited On: | 03 Apr 2006 | ||||||
| Last Modified: | 27 Apr 2009 10:09 |
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