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/ | ||||||||
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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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