Wall loads were measured in a model bin 2.44 m in diameter and 7.3 m tall equipped with a bottom unloading wall flume. The results were then compared to the wall loads measured during unloading of this same bin without the flume. During most ofunloading the wall loads measured when using the flume were smaller than those during filling. However, at the onset of discharge a load spike was observed prior to the formation of the funnel-flow discharge pattern. Wall moments in the direction of theflume were observed to occur which were three times as large as those measured during centric unloading.
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