Particle Field Characterization by Digital In-line Holography

Abstract

A laboratory demonstration of the three-dimensional nature of in-line holography Am.Abstract. Recent developments have shown the potential of digital in-line holography for diagnostics in fluids. This new method provides a low-cost and an easy access method for measuring both size and spatial distribution of particles in a volume. Here, it is shown that, by applying traditional image processing tools on the particle images digitally reconstructed, statistical reliable results on particles size and spatial distribution can be obtained. The particle sizing method is experimentally illustrated by glass microspheres that are moving in a turbulent flow generated by a annular jet. A comparison with the histogram diameters provided by a common diffraction particle sizer are presented.