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The Investigation of Unsteady Flow Fields in Aerodynamics by Means of Particle Image Velocimetry

Kompenhans, J. and Raffel, M. and Willert, Ch. and Kaehler, Ch. (1997) The Investigation of Unsteady Flow Fields in Aerodynamics by Means of Particle Image Velocimetry. VISU 97, 7e Colloque National de Visualisation et de Traitement d'images en Mecanique des Fluides, ISL, Saint-Louis,3.06.-6.06.97.

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Abstract

Particle Image Velocimetry (PIV) is increasingly used to investigate unsteady velocity fields instantaneously. For the first time the PIV technique allows the recording of a complete velocity field in a plane of the flow within microseconds. PIV provides information about unsteady flow fields, that is difficult to obtain with other experimental techniques. It also helps to save operationaltime in the wind tunnel. At DLR a set up for PIV has been developed which can be operated under the rough environmental conditions (noise, vibrations) of large industrial wind tunnels, such as DNW. This system has been successfully applied to very low speed as well as to high speed flows (U &#61 1. 600 m/s) at a number of aerodynamicinvestigations such as e.g. in the field of grid turbulence, boundarylayer instabilities, rotors, wakes behind airfoils, and for the investigation of transonic flows in the wake of cascade blades. The evaluation and post-processing of the PIV recordings run fully.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1997,
Title:The Investigation of Unsteady Flow Fields in Aerodynamics by Means of Particle Image Velocimetry
Authors:
AuthorsInstitution or Email of Authors
Kompenhans, J.UNSPECIFIED
Raffel, M.UNSPECIFIED
Willert, Ch.UNSPECIFIED
Kaehler, Ch.UNSPECIFIED
Date:1997
Status:Published
Keywords:Particle Image Velocimetry, Wind Tunnel, Flow Velocity Fields
Event Title:VISU 97, 7e Colloque National de Visualisation et de Traitement d'images en Mecanique des Fluides, ISL, Saint-Louis,3.06.-6.06.97
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: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:09

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