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Temperature Measurements Inside a thin Fluid Layer with Background Oriented Schlieren Method

Tokgoz, S. und Geisler, Reinhard und van Bokhoven, L. J. A. und Wieneke, Bernhard (2012) Temperature Measurements Inside a thin Fluid Layer with Background Oriented Schlieren Method. 15th International Symposium on Flow Visualization, Minsk, Belarus, Russia, 25. - 28. Jun. 2012,.

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Offizielle URL: http://www.isfv15.com/home/

Kurzfassung

Background oriented schlieren (BOS) is a quantitative measurement method based on refractive index change of the fluid in question. The change of the refractive index is related with density, temperature and concentration gradients. So far, the technique has been used in various flow types. Since the measurement includes acquisition of an image of a background target, all previous applications were on test sections where both sides are optically accessible. In this study, we aim to extend the application to cases where the optical access to the test section is limited to only one direction. We performed measurements in a thin fluid layer (3 mm thick) bounded by a glass plate on top and highly reflective surface below. Flow was provided by two parallel jets. Using the reflected image of background target, it became possible to measure 2D temperature gradients with a good precision. The temperature gradients are integrated to compute the temperature distribution inside the fluid layer. Independent temperature measurements were done with thermistors and used as boundary condition for the integration and comparison of the results. Temperatures can be estimated with an accuracy at the order of 10 mK.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Temperature Measurements Inside a thin Fluid Layer with Background Oriented Schlieren Method
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Tokgoz, S.Delft University of Technology, Delft, 2628 CA, The Netherlands
Geisler, ReinhardNICHT SPEZIFIZIERT
van Bokhoven, L. J. A.4ASML, Veldhoven, 5504 DR, The Netherlands
Wieneke, BernhardLaVision, Göttingen, D
Datum:2012
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Name der Reihe:Conference Proceedings
Status:veröffentlicht
Stichwörter:temperature, flow visualization, water layer, jet, background oriented schlieren
Veranstaltungstitel:15th International Symposium on Flow Visualization
Veranstaltungsort:25. - 28. Jun. 2012,
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:Minsk, Belarus, Russia
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Simulation & Validierung
Standort: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren
Hinterlegt von: Ilka Micknaus
Hinterlegt am:24 Jul 2012 15:56
Letzte Änderung:09 Okt 2012 15:03

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