This work describes the development of a Raman spectroscopy system for
measuring aerothermochemistry in high-speed jets and flames. A transmissive grating
spectrometer was newly developed for capturing pure rotational Raman and rotationalvibrational
Raman with a single CCD camera. Previous state-of-the-art experiments
applied line imagining in known flowfields of constant pressure. The system described
herein is designed to provide local measurement of pressure, with full thermochemistry,
along a line. In every point, temperature will be measured by examining the Boltzmann
decay of the rotational spectrum, while molar fraction will be measured from the
vibrational Raman spectrum. The temperature and concentrations will then be combined
to obtain partial pressure measurements via the equation of state. This work examines
the phenomenology of rotational and vibrational Raman scattering and proposes
algorithms that can be used for data extraction.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2619 |
| Date | 15 May 2009 |
| Creators | Cohen, Benjamin Nathan |
| Contributors | Karpetis, Adonios N. |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | electronic, application/pdf, born digital |
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