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Freestream Velocity in a Shock-Tunnel Nozzle Flow using Diode Laser Absorption Spectroscopy

Palma, Phillip C. and Gardner, Anthony Donald and Beck, Walter H. (2002) Freestream Velocity in a Shock-Tunnel Nozzle Flow using Diode Laser Absorption Spectroscopy. 3rd Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion, Dec. 2-3, 2002, Brisbane, Australia.

Full text not available from this repository.

Abstract

Diode laser absorption spectroscopy has been used to make time-resolved velocity measurements in the freestream of a large free piston shock tunnel. A small probe was used to sample a uniform region of the flow at the nozzle exit. Experiments were conducted with air and nitrogen test gases, however, only the nitrogen case produced velocity measurements during the shock-tunnel test time. Rubidium was seeded into the flow and employed as the probe species. The results are consistent with chemical reactions reducing the concentration of atomic Rb in the freestream and increasing it in the high-temperature boundary layers formed on the probe during flow establishment.

Item URL in elib:https://elib.dlr.de/44192/
Document Type:Conference or Workshop Item (Paper)
Title:Freestream Velocity in a Shock-Tunnel Nozzle Flow using Diode Laser Absorption Spectroscopy
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Palma, Phillip C.UNSPECIFIEDUNSPECIFIED
Gardner, Anthony DonaldUNSPECIFIEDUNSPECIFIED
Beck, Walter H.UNSPECIFIEDUNSPECIFIED
Date:2002
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:HEG, laser diagnostics, hypersonic
Event Title:3rd Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion
Event Location:Brisbane, Australia
Event Type:international Conference
Event Dates:Dec. 2-3, 2002
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Grundlagen Raumtransport - Anlagen und Messtechnik (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Gardner, Dr.habil. Anthony
Deposited On:30 Oct 2006
Last Modified:27 Apr 2009 12:59

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