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Temperature and velocity measurements in a fluid layer using background-oriented schlieren and PIV methods

Tokgoz, S. and Geisler, Reinhard and van Bokhoven, L. J. A. and Wieneke, Bernhard (2012) Temperature and velocity measurements in a fluid layer using background-oriented schlieren and PIV methods. Measurement Science and Technology, 23 (11), pp. 1-10. Institute of Physics (IOP) Publishing. DOI: 10.1088/0957-0233/23/11/115302 ISSN 0957-0233

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Official URL: http://iopscience.iop.org/0957-0233/


In this paper, we discuss temperature and velocity measurements inside a thin fluid layer using background-oriented schlieren (BOS) and particle image velocimetry (PIV) methods. BOS is a suitable technique for quantitative temperature measurements, but so far it has been used in fully transparent systems only. Introducing a reflective surface inside the measurement geometry which is optically accessible from only one viewing direction, we measure the refractive index change of a flow provided by two elliptical jets by visualizing displacements on a background target. Relation between the refractive index change and the temperature gradients is used to compute 2D temperature fields. Measurements are carried out for various temperature differences between the jets for both steady and dynamic flow. The simultaneous implementation of BOS and PIV techniques provides instantaneous, two-dimensional temperature gradients and velocity vectors inside the thin fluid layer.

Item URL in elib:https://elib.dlr.de/75329/
Document Type:Article
Additional Information:Paper: 115302
Title:Temperature and velocity measurements in a fluid layer using background-oriented schlieren and PIV methods
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Tokgoz, S.Delft University of Technology, Delft, The NetherlandsUNSPECIFIED
Geisler, Reinhardreinhard.geisler (at) dlr.deUNSPECIFIED
van Bokhoven, L. J. A.ASML, Veldhoven, The NetherlandsUNSPECIFIED
Wieneke, BernhardLaVision, Göttingen, GermanyUNSPECIFIED
Journal or Publication Title:Measurement Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1088/0957-0233/23/11/115302
Page Range:pp. 1-10
Publisher:Institute of Physics (IOP) Publishing
Keywords:BOS, temperature, PIV
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Micknaus, Ilka
Deposited On:10 Oct 2012 15:15
Last Modified:06 Sep 2019 15:28

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