Klinge, Falk and Riethmuller, Michel (2002) Local density information obtained by means of the Background Oriented Schlieren (BOS) method. 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 2002-07-08 -2002-07-11, Lisabon (Portugal).
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The fairly new measurement system BOS is providing promising results by allowing the visualisation of qualitative density gradients as presented by Richard et al (2000). This paper shows that it is possible to measure local density information by means of BOS for the specific application of a 2D jet. An experiment is described to present the feasibility of BOS to measure local density information. A slit nozzle blowing an air / helium mixture was investigated by BOS and Catharometry. Comparing the obtained results and taking the Catharometry measurement as the reference, the accuracy of the density information provided by BOS can be evaluated: The small difference between the results of the two measurement techniques confirms the applicability and accuracy of BOS for local density measurements in 2D density gradient investigations.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Local density information obtained by means of the Background Oriented Schlieren (BOS) method|
|In ISI Web of Science:||No|
|Page Range:||pp. 1-10|
|Series Name:||Conference Proceedings|
|Keywords:||BOS, Catharometry, local density refractive index, quantitative, Helium|
|Event Title:||11th International Symposium on Applications of Laser Techniques to Fluid Mechanics|
|Event Location:||Lisabon (Portugal)|
|Event Type:||international Conference|
|Event Dates:||2002-07-08 -2002-07-11|
|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|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Experimental Methods|
|Deposited By:||Ilka Micknaus|
|Deposited On:||04 Oct 2007|
|Last Modified:||27 Apr 2009 14:12|
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