Application of the Photoacoustic and Photothermal Effects to Combustion Diagnostics.
Abstract
There is presently a need for the development of combustion diagnostic techniques to measure such parameters as gas concentrations and local temperatures in practical flames. These techniques should be non-perturbing to permit in situ measurements, have spatial resolution, and have temporal resolution. Optical techniques are best suited for this purpose since they easily satisfy all three criteria. In fact, several optical techniques have already been successfully used for specie concentration measurements, e.g., coherent anti-Stokes Raman scattering, spontaneous Raman scattering, and saturated fluorescence. However, there is currently no single technique which is suitable under all circumstances and all of the above techniques can be seen to have relative advantages and disadvantages over each other. Under the sponsorship of the United States Air Force, we have investigated the potential of the photoacoustic technique as a combustion diagnostic technique for measurement of minority species concentrations. In this report we discuss the results of this investigation. (AN)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1986
- Accession Number
- ADA294436
Entities
People
- Gregory J. Salmo
- Rajendra Gupta
Organizations
- University of Arkansas