Two-Dimensional Measurements of OH Concentration and Temperature in Reactive Flows.
Abstract
This report describes two related efforts that have as a common objective the development of new aspects of laser-induced fluorescene for measurements in time-varying reactive flows such as turbulent flames. The first effort was the demonstration, development and study of two-dimensional fluorescence imaging in flames. This provides a spatially correlated map of the concentration of OH radicals from a single laser shot. The second effort was the development of vibrational transfer thermometry, in which upward collisional energy transfer in the A2+ state of laser excited OH in flames is used to measure temperature simultaneously with OH concentration. Although a good correlation (better than 5 per cent rms deviation) between measured intensities and temperature was obtained in the range 1400-2700K, it has not been possible thus far to place the method on a sound fundamental, theoretical footing. Originator-supplied keywords include: Laser-induced fluorescence, Transfer ratios, Quenching rates, Rotational distributions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 05, 1984
- Accession Number
- ADA149849
Entities
People
- D. R. Crosley
- M. J. Dyer
Organizations
- SRI International