Willert, C. and Stockhausen, G. and Klinner, J. and Beversdorff, M. and Richard, H. and Raffel, M. and Quest, J. and Becker, W. (2003) On the development of planar laser velocimetry techniques fro cryogenic wind tunnels. In: CD ROM Proceedings PIV'03. 5th International Symposium on Particle Image Velocimetry, Pusan, Korea, 22-24. Sept. 2003, -.
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Two laser-light sheet based planar velocimetry techniques were successfully applied for the first time in two different cryogenic wind tunnel facilities. Particle image velocimetry (PIV) was used in a low speed cryogenic facility for the investigation of wing tip devices at Mach 0.2 and a temperature of 100K. A specially designed Doppler global velocimetry system (DGV, planar Doppler velocimetry) was tested in a high-speed cryogenic facility at Mach 0.3 – 0.8 and pressures of 1.2–2.5 bar. While the PIV application made use of standard oil droplet seeding injected into the tunnel, the DGV system relied on the light scattered by small ice crystals which were generated by injecting a mixture of warm nitrogen and water vapor into the cold flow. As operational and access conditions are quite different between the two facilities both PIV and DGV respectively were the best choice for the non-intrusive measurement of flow fields.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||On the development of planar laser velocimetry techniques fro cryogenic wind tunnels|
|Journal or Publication Title:||CD ROM Proceedings PIV'03|
|Keywords:||PIV, Particle image velocimetry, DGV, doppler global velocimetry, cryogenic flow, doppler shift, seeding, planar doppler velocimetry, winglet, wingtip device|
|Event Title:||5th International Symposium on Particle Image Velocimetry, Pusan, Korea, 22-24. Sept. 2003|
|Organizer:||Korean Society of Visualization (KSV)|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||Propulsion Systems|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L ER - Engine Research|
|DLR - Research theme (Project):||UNSPECIFIED|
|Location:||Köln-Porz , Göttingen|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Helicopters|
Institute of Propulsion Technology
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||16 Sep 2005|
|Last Modified:||06 Jan 2010 13:24|
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