Experimental study of discharge rate fluctuations in a silo with different hopper geometries

被引：65

作者：

Unac, R. O. ^{[1
,2
]}

Vidales, A. M. ^{[1
,2
]}

Benegas, O. A. ^{[2
,3
]}

Ippolito, I. ^{[4
]}

机构：

[1] Univ Nacl San Luis, Dept Fis, San Luis, Argentina

[2] Univ Nacl San Luis, Inst Fis Aplicada INFAP CONICET, San Luis, Argentina

[3] Univ Nacl San Luis, Dept Mineria, San Luis, Argentina

[4] Univ Buenos Aires, Fac Ingn, Grp Medios Porosos, Lab Int Asociado Fis & Mecan Fluidos LIA FMF CONI, RA-1063 Buenos Aires, DF, Argentina

来源：

POWDER TECHNOLOGY | 2012年 / 225卷

关键词：

Flow; Silo; Fluctuations; GRANULAR-MATERIALS; 2-DIMENSIONAL HOPPERS; FLOW; ORIFICES; DENSITY; DEM; SIMULATION; MIXTURES; SOLIDS; MODELS;

D O I：

10.1016/j.powtec.2012.04.013

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An experimental study of the flow of quartz particles with two different mean size was performed on a 3D silo at the scale of the laboratory. Two kinds of hopper geometry were used for the cylindrical silo: flat-bottomed and conical. The diameter of the outlet was varied. The dependence of the flow rate and its fluctuations on the silo geometry and outlet size was studied. The Beverloo equation was satisfied in all cases studied and the dependence of its parameters on the silo geometry and on the particle size was analyzed. Using a Fourier analysis, we found a characteristic frequency which varied with the outlet diameter and was virtually independent of the hopper geometry. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：214 / 220

页数：7

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