Investigation of Real-Time Two-Dimensional Visualization of Fuel Spray Liquid/Vapor Distribution via Exciplex Fluorescence.
Final rept. 1 Jul 84-30 Jul 87,
UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT
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This final report describes the achievements of the research program carried out under the subject contract. The overall aim of the study was to develop a new and unique combustion diagnostic technique which would provide the real-time, two-dimensional visualization of both the liquid and vapor phase of a fuel spray by means of laser-induced exciplex fluorescence. Significant achievements toward this end were 1 Demonstration and application of an exciplex thermometer, 2 Discovery of new exciplex systems, particularly intramolecular exciplex systems, 3 Formulation of a total scheme involving analysis of the exciplex spectral emissions for determining temperature, liquid and vapor concentrations, and the local oxygen pressure in the spray field, 4 Construction of an apparatus for studying single injected droplets into a controlled environment of temperature and pressure for observation of laser-induced exciplex fluorescence, 5 Modeling of single droplet vaporization in support of the experimental studies, 6 Observation of single droplet liquid and vapor phase fluorescence in two-dimensions, and 7 Experiments toward achieving quantitative exciplex fluorescence measurements. Keywords Visualization fluorescence, Laser, Image, Fuel spray.
- Physical Chemistry