Abstract
AbstractDouble pulse holography is, for experimental investigations, an extremely valuable means of measuring transport processes in disperse phases. This method allows the single or two dimensional frequency distributions of particle size, velocity, momentum and energy to be determined for each recorded sub‐collective, with the additional possibility of checking the existence of their correlation. Being an imaging method, the distributions of the particles in space can be displayed along with the instantaneous values of the concentration and particle flux density.A complete and very exact evaluation of the holographic images, coupled with the certainty of image pairing, is one of the prerequisites of a successful application. The best evaluation in this sense is, at present, produced by a semi‐automatic, interactive system in which the assessment of certain crucial factors is left to an operator.Although the effort incurred by such a total evaluation is by no means insignificant, it is justified by the profusion of information to be obtained.The present report explains the whole concept including a programme system with which the primary data is further processed and with which a variety of results may be called up and displayed.
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