Full Scale Experiences with Flow Funnel

Abstract

This article describes some experiences with flow funnel in large concrete silos with a large discharge eccentricity. Some in-situ measurements were made (full-size experiments) and the results are described here. As a consequence of the experiments described here, the eccentric discharge funnel flow model of the Eurocode EN 1991-4 has been incorporated into the new DIN 1055 Part 6 standard for pressures on silo walls. Finally some reference calculations are described which give some understanding of the variation of the main parameters in this funnel flow model and show the influence of these parameters on the bending moments developing in concrete silo walls.