Abstract
A new correlation for friction factor in horizontal pneumatic conveying is proposed, based on the unified theory of Yang. Two drawbacks to the original correlation presented by Yang are the implicit nature of the equations and the inability of the correlation to predict saltation. The new correlation is based on an analysis of experimental data for particle velocity recently obtained. Knowing the particle velocity allows an explicit calculation of the friction factor and thus a prediction of the pressure drop. An added benefit to this method is the prediction of the saltation point.
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