Abstract

Laser diagnostics have become an important tool for studying turbulence and combustion. Several techniques have been developed which allow the instantaneous 2-D measurement of quantities such as species concentration, temperature, and density in reacting and nonreacting flows. Such quantitative imaging techniques have received increased interest due to the realization that the large-scale structures play an important role in these flows. The spatial distributions of scalar quantities obtained by the techniques are expected to aid in understanding these structures. Techniques based on Lorenz-Mie, Rayleigh, fluorescence, and Raman scattering have been used successfully for quantitative 2-D measurements.

© 1986 Optical Society of America