Combustion Diagnostics: Planar Imaging Techniques

摘要

New measurement techniques based on planar (2-d) imaging of scattered light provide a powerful complement to single point laser based diagnostics, with significant potential to impact combustion research. Though still in an early stage of development, these imaging methods offer prospects for non-invasive, spatially and temporally resolved measurements of species concentrations and mole fractions, temperature, density, velocity, and pressure. Imaging processes encompassed in this review include laser-induced fluorescence and Raman, Mie an Rayleigh scattering. Extensions of these 2-d techniques to new flowfield variables and species, and to 3-d imaging by rapid scanning of the illumination plane, are already in progress. Keywords: Planar; Imaging; Laser; Diagnostics; Combustion; Rayleigh; Raman; Mie; Flowfield; Reprints. (mgm)