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.
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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.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Freestream Velocity in a Shock-Tunnel Nozzle Flow using Diode Laser Absorption Spectroscopy|
|In ISI Web of Science:||No|
|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|
|HGF - Program:||Space|
|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)|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Spacecraft|
|Deposited By:||Dr. Anthony Gardner|
|Deposited On:||30 Oct 2006|
|Last Modified:||27 Apr 2009 12:59|
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