Abstract
Boundary-layer measurements with a Laser Doppler Velocimeter (LDV), using the differential Doppler mode, have been made in the Naval Surface Weapons Center boundary-layer channel at a nominal Mach number of 3. Statistical techniques were used to obtain the various flow parameters which include mean velocity profiles, turbulence intensities, Reynolds shear stress distributions, mixing length, eddy viscosity, and also skewness and flatness measurements of the velocity distribution function. Measurements have also been made of the mean flow properties with conventional pitot-temperature probes. These measurements have been used to compute the various transport properties. These values then are compared with the LDV measurements. The agreement, in general, is found to be quite good.
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