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Rayleigh scattering measurements for obtaining spatiallyresolved absolute gas densities in large scale facilities

Beck, Walter und Stockmann, E. und Zaidi, S. H. und Miles, R. B. (2006) Rayleigh scattering measurements for obtaining spatiallyresolved absolute gas densities in large scale facilities. 44th AIAA Aerospace Sciences Meeting and Exhibit, 2006-01-12, Reno, Nevada (USA).

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Kurzfassung

A systematic approach for the use of Rayleigh scattering to determine spatially resolved (along a line) gas densities is presented. Lessons learned from earlier (2003) measurements on the MARIAH II Radiatively-Driven Hypersonic Wind Tunnel (RDHWT) are incorporated into an approach which seeks to address all of the previous difficulties encountered, providing the requisite spatial resolution, suppression of scattered light, calibration and correction for laser shot-to-shot fluctuations in order to obtain data of sufficient quality to validate the predictive MARIAH II models for a 1 MW electron beam coupled into a supersonic flow. A statistical analysis is used to ascertain the necessary measurement accuracy, based on the final required accuracy for the density for its particular application. Laboratory tests are carried out on a free jet expansion using various test gases - air, helium, methane, ethylene and propane – to simulate the density variations expected in the actual experiments. The results are processed and analyzed quantitatively to verify the approach. Although developed with the above-mentioned wind tunnel in mind, the method is generally and universally applicable to any large scale facility.

Dokumentart:Konferenzbeitrag (Paper)
Zusätzliche Informationen:AIAA Meeting papers Disc 1-5
Titel:Rayleigh scattering measurements for obtaining spatiallyresolved absolute gas densities in large scale facilities
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Beck, WalterNICHT SPEZIFIZIERT
Stockmann, E.Department of Mechanical and Aerospace Engineering, Princeton University, Engineering Quadrangle D414, Olden Street, Princeton, NJ 08544 U.S.A.
Zaidi, S. H.Department of Mechanical and Aerospace Engineering, Princeton University, Engineering Quadrangle D414, Olden Street, Princeton, NJ 08544 U.S.A.
Miles, R. B.Department of Mechanical and Aerospace Engineering, Princeton University, Engineering Quadrangle D414, Olden Street, Princeton, NJ 08544 U.S.A.
Datum:2006
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:Disc 4
Seitenbereich:Seiten 1-13
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
American Institute of Aeronautics and Astronautics, NICHT SPEZIFIZIERT
Name der Reihe:Conference Proceedings
Status:veröffentlicht
Stichwörter:Rayleigh scattering, air, helium, methane, ethylene and propane
Veranstaltungstitel:44th AIAA Aerospace Sciences Meeting and Exhibit
Veranstaltungsort:Reno, Nevada (USA)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2006-01-12
Veranstalter :AIAA
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Flugphysik
Standort: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren
Hinterlegt von: Ilka Micknaus
Hinterlegt am:06 Mär 2007
Letzte Änderung:27 Apr 2009 13:29

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