Further Development of Temporally Resolved PDV and Its Application to Compressible Free Shear Layers

Abstract

Temporally resolved PDV is further developed by extending the technique from one component to two components. This is achieved by using a pulse burst laser with MHz rate repetition capabilities and two ultra-high speed framing rate CCD cameras. Each camera is used in a conventional splitter/recombiner PDV system to measure one component of velocity. These two measurements are then combined to resolve the u and w components of velocity. Very preliminary results on a newly constructed planar shear layer facility show the strong potential of this technique and identify a few issues that must be addressed in the next iteration of experiments.