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Characterization of CO Thermochemistry in Incident ShockwavesIncident shock waves in pure CO have been characterized in the Electric Arc ShockTube facility at NASA Ames Research Center. Spectrally and spatially resolved emissionspectra characterize radiative signatures from CO in the VUV and mid-infrared and atomiccarbon and C2 in the visible. CO absorption of a single vibrational line is also measuredwith a tunable diode laser. The experimental data analyzed here are at a pressure of 0.25Torr in the driven section and span a shock velocity range from 3.4-9.5 km/s. The emissionand absorption signals are analyzed to extract temperature relaxation behind the shockwhich is used to derive the rate of CO dissociation. The emission spectra are compared toresults using different kinetic parameters for CO dissociation and C2 dissociation andexchange. Different rates from the literature are found to match the data from 3.4-6.6 km/sand 6.6-9.5 km/s. Areas for improvement in CO and C2 radiation modeling are suggested onthe basis of the analysis.
Document ID
20180007159
Acquisition Source
Ames Research Center
Document Type
Conference Paper
External Source(s)
Authors
Cruden, Brett A.
(Analytical Mechanics Associates, Inc. Moffett Field, CA, United States)
Brandis, Aaron M.
(Analytical Mechanics Associates, Inc. Moffett Field, CA, United States)
Macdonald, Megan E.
(Jacobs Technology, Inc. Moffett Field, CA, United States)
Date Acquired
October 30, 2018
Publication Date
June 25, 2018
Subject Category
Plasma Physics
Report/Patent Number
ARC-E-DAA-TN56450
Meeting Information
Meeting: AIAA AVIATION Forum - Joint Thermophysics and Heat Transfer Conference
Location: Atlanta, GA
Country: United States
Start Date: June 25, 2018
End Date: June 29, 2018
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NNA16BD26C
CONTRACT_GRANT: NNA15BB15C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
CO
Spectroscopy
Entry
Shockwave
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