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BOS measurements in propeller slipstream

Roosenboom, Eric and Schröder, Andreas and Kompenhans, Jürgen (2007) BOS measurements in propeller slipstream. 13th International Symposium on Flow Visualization, 2008-07-01 - 2008-07-04, Nice (France).

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Abstract

The background oriented Schlieren (BOS) method has been used to qualitatively identify the density gradients in the helical structure of a propeller slipstream. The applicability of the BOS method to rotational flows has been identified by Richard et al. (2000). Recently Kindler et al. (2007) have used a tomographic reconstruc-tion in order to estimate the density and core ra-dius of rotor flow. From an aerodynamic point of view the propeller wing interaction remains an avid field of investigation (Veldhuis, 2005). The current BOS measurements investigate vor-tex structures in a propeller slipstream at two sideslip angles, 0° and 7°. An 8-bladed single sting propeller is mounted to the wind tunnel ceiling. A total of 200 images are recorded at each angle. Reference images of the background are recorded with the propeller removed and the wind tunnel flow off. The propeller rotates at 14000 revolutions per minute; the wind tunnel velocity was 60 m/s.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:BOS measurements in propeller slipstream
Authors:
AuthorsInstitution or Email of Authors
Roosenboom, EricUNSPECIFIED
Schröder, AndreasUNSPECIFIED
Kompenhans, JürgenUNSPECIFIED
Date:2007
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Series Name:CD-ROM Conference Proceedings
Status:Published
Keywords:Background oriented Schlieren (BOS), Propeller flow, Industrial wind tunnel
Event Title:13th International Symposium on Flow Visualization
Event Location:Nice (France)
Event Type:international Conference
Event Dates:2008-07-01 - 2008-07-04
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:29 Jul 2008
Last Modified:15 Jan 2010 01:57

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