Instrumentation has been acquired and made operational for use in a study of the interaction of turbulence and combustion in premixed turbulent flames. This includes a laser Doppler anemometer for single point, two point and two component velocity measurements, a two-dimensional laser flow visualization system and a related data acquisition and processing microcomputer system. Keywords: Premixed turbulent combustion, Laser doppler velocimetry, Flames.

Turbulence measurements with a Laser Doppler Velocimeter (LDV) using the dual scatter or differential Doppler mode have been made in a subsonic, fully developed channel flow. The measurements were made using only those light scattering particles occurring naturally in air. Results include mean velocity profiles, turbulence intensities, Reynolds stress distributions and a skewness measurement of the velocity distribution function across the channel. Statistical techniques were used to obtain the various turbulence parameters. Guidelines have been established for the amount of data needed to obtain results with a specified accuracy and confidence level. Measurements have also been made to determine the particle-size distribution. An aerodynamic means was used to determine the size distribution, in contrast to the usual optical procedures. (Modified author abstract).