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Gas temperature and density measurements based on spectrally resolved rayleigh-brillouin scattering
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Seasholtz, Richard G. Lock, James A. |
| Copyright Year | 1992 |
| Description | The use of molecular Rayleigh scattering for measurements of gas density and temperature is evaluated. The technique used is based on the measurement of the spectrum of the scattered light, where both temperature and density are determined from the spectral shape. Planar imaging of Rayleigh scattering from air using a laser light sheet is evaluated for ambient conditions. The Cramer-Rao lower bounds for the shot-noise limited density and temperature measurement uncertainties are calculated for an ideal optical spectrum analyzer and for a planar mirror Fabry-Perot interferometer used in a static, imaging mode. With this technique, a single image of the Rayleigh scattered light can be analyzed to obtain density (or pressure) and temperature. Experimental results are presented for planar measurements taken in a heated air stream. |
| File Size | 1051100 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930004496 |
| Archival Resource Key | ark:/13960/t7kq2xc5h |
| Language | English |
| Publisher Date | 1992-09-01 |
| Access Restriction | Open |
| Subject Keyword | Gas Density Temperature Measurement Air Flow Rayleigh Scattering Density Measurement Spectrum Analysis Flow Measurement Pressure Measurement Gas Temperature Fabry-perot Interferometers Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
