Schröder, Andreas und Schanz, Daniel und Novara, Matteo und Philipp, Florian und Geisler, Reinhard und Knopp, Tobias und Schroll, Michael und Willert, Christian (2018) Investigation of a high Reynolds number turbulent boundary layer flow with adverse pressure gradients using PIV and 2D- and 3D- Shake-The-Box. In: 19th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics (257). 19th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics, 2018-07-16 - 2018-07-19, Lisbon, Portugal.
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Offizielle URL: http://www.lisbon-lasersymposium.org/lxlaser2018
Kurzfassung
We present an experimental adverse pressure gradient turbulent boundary layer (TBL) flow investigation at high Reynolds numbers (approx. 10.000 < Re < 40.000) using large field Multi camera 2D PIV and three different particle tracking methods based on the Shake The Box (STB) technique, namely time resolved 2D and 3D STB and Multi Pulse (MP) STB. The experiments were performed within the frame of the DLR project Victoria and conducted in the Eiffel type atmospheric wind tunnel of the University of Armed Forces in Munich (AWM), which has a 22m long test section with a rectangular cross section of 1.8 x1.8 m^2. After a ramp the TBL develops along a flat plate with nearly zero pressure gradients (ZPG) to an equilibrium state before it enters into a 2D diffusor geometry following a smooth and moderate curvature into a flat plate at ~18° inclination angle while undergoing a significant adverse pressure gradient (APG) leading to flow separation. The measurements have been performed with an embedded field of view (FOV) strategy. A statistical significant number of samples for four different free stream velocities have been acquired at several positions in all pressure gradient regimes down to the region of (intermittent) flow separation. A large number of instantaneous velocity vector fields and time resolved particle tracks of the boundary layer flow have been achieved in order to gain high resolution wall normal profiles of the mean velocities and related Reynolds stresses <u_i u_j> in a first step.
elib-URL des Eintrags: | https://elib.dlr.de/121221/ | ||||||||||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||||||||||
Zusätzliche Informationen: | 2.2 Turbulent Boundary Layers I | ||||||||||||||||||||||||||||||||||||
Titel: | Investigation of a high Reynolds number turbulent boundary layer flow with adverse pressure gradients using PIV and 2D- and 3D- Shake-The-Box | ||||||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 16 Juli 2018 | ||||||||||||||||||||||||||||||||||||
Erschienen in: | 19th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics | ||||||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||||||||||
Name der Reihe: | Conference Proceedings online | ||||||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||||||
Stichwörter: | turbulent boundary layer, wall shear stress, particle image velocimetry, PIV, particle tracking velocimetry, PTV, long-range micro PIV, turbulence, flow visualization, image-based velocimetry, shake-the-box, STB | ||||||||||||||||||||||||||||||||||||
Veranstaltungstitel: | 19th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics | ||||||||||||||||||||||||||||||||||||
Veranstaltungsort: | Lisbon, Portugal | ||||||||||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 16 Juli 2018 | ||||||||||||||||||||||||||||||||||||
Veranstaltungsende: | 19 Juli 2018 | ||||||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||||||||||||||
HGF - Programmthema: | Flugzeuge | ||||||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | L AR - Aircraft Research | ||||||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - VicToria (alt) | ||||||||||||||||||||||||||||||||||||
Standort: | Göttingen , Köln-Porz | ||||||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO Institut für Aerodynamik und Strömungstechnik > CASE, GO Institut für Antriebstechnik > Triebwerksmesstechnik | ||||||||||||||||||||||||||||||||||||
Hinterlegt von: | Micknaus, Ilka | ||||||||||||||||||||||||||||||||||||
Hinterlegt am: | 09 Nov 2018 13:22 | ||||||||||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:25 |
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