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Measurements of density fields in micro nozzle plumes in vacuum by using an enhanced tomographic Background Oriented Schlieren (BOS) technique
Schröder, Andreas and Geisler, Reinhard and Over, Benedikt and Gesemann, Sebastian and Schwane, R. (2011) Measurements of density fields in micro nozzle plumes in vacuum by using an enhanced tomographic Background Oriented Schlieren (BOS) technique. FVR 2011, 29. Nov. - 01. Dec. 2011, Poitiers, France.
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Official URL: http://fvr2011.conference.univ-poitiers.fr
Abstract
The measuring principle of BOS is based on light ray deflection along density gradients normal to the lines of sight. For high precision BOS measurements in a small field of view around a micro nozzle exit a long-distance microscope (LDM), a DMD projector, a high resolution CCD camera and evaluation software based on crosscorrelation for determining displacement vector fields have been used in the propulsion laboratory of ESA-ESTEC in Noordwijk. The density distribution inside a micro nozzle free jet of nitrogen into a vacuum chamber has been investigated using optical tomography for measurement data achieved with BOS.
| Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Title: | Measurements of density fields in micro nozzle plumes in vacuum by using an enhanced tomographic Background Oriented Schlieren (BOS) technique | ||||||||||||
| Authors: |
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| Date: | 2011 | ||||||||||||
| Refereed publication: | No | ||||||||||||
| In SCOPUS: | No | ||||||||||||
| In ISI Web of Science: | No | ||||||||||||
| Series Name: | Conference Proceedings on CD-ROM | ||||||||||||
| Status: | Published | ||||||||||||
| Keywords: | Oriented Schlieren (BOS), CCD | ||||||||||||
| Event Title: | FVR 2011 | ||||||||||||
| Event Location: | Poitiers, France | ||||||||||||
| Event Type: | international Conference | ||||||||||||
| Event Dates: | 29. Nov. - 01. Dec. 2011 | ||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||
| HGF - Program Themes: | L AR - 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: | 05 Dec 2011 11:50 | ||||||||||||
| Last Modified: | 05 Dec 2011 11:50 |
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