Abstract

Laser imaging techniques have developed considerably over the past few years and are Increasingly becoming productive diagnostic tools for studying turbulent reacting and nonreacting flows. Two-dimensional measurements of scalar quantities, such as temperature, species concentration, and density, have been demonstrated by means of Lorenz—Mie, Rayleigh, fluorescence, and Raman scattering. New developments in detectors, lasers, and computers have reduced the complexity and cost of some of the basic two-dimensional measurements and thus have increased their applicability. In addition, the use of more sophisticated experimental configurations has allowed laser imaging techniques to be extended considerably. One area of advancement is the ability to make measurements rapidly enough to follow the temporal evolution of flow structures. Developments in high-speed quantitative imaging techniques will be presented along with results from turbulent premixed flames.

© 1990 Optical Society of America