Phase Doppler Measurements in Dense Sprays

Abstract

Abstract : Measurements of droplet size, velocity and volume flux have been made in a dense spray using phase Doppler interferometry. Volume flux measurements have shown significant improvement over conventional phase Doppler techniques through the use of a flow splitter which provided the probe beams and scattered light signals access to the dense core of the spray. Also, the beam waist diameter was made much smaller than the droplets being measured in order to reduce multiple particle occurrences within the probe volume. The volume flux measurements were very encouraging when compared to measurements made with a mechanical patternator.