Nguyen, T. and Brennen, C. and Sabersky, R. (1979) Funnel Flow in Hoppers. In: Mechanics applied to the transport of bulk materials : presented at the Joint ASME-CSME Applied Mechanics, Fluids Engineering, and Bioengineering Conference, Niagara Falls, New York, June 18-20, 1979. Applied Mechanics Division. Vol.AMD-31. No.31. American Society of Mechanical Engineers , New York, pp. 25-33. http://resolver.caltech.edu/CaltechAUTHORS:NGUmatbm79
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Detailed observtions of funnel flows of dry granular materials in wedge-shaped hoppers of different geometries are presented. The variations of the flow regime with changes in the height of material in the hopper/vertical bin configuration, the width of the vertical bin, the hopper angle and the hopper opening width were investigated and a number of specific flow regimes identified (mass flow and several forms of funnel flow). In the first part of the paper particular attention is paid to the conditions for transition from one flow regime to another; in particular it is shown that the existence of a funnel depends not only on the hopper angle but is also strongly dependent on the geometry of the hopper/bin system. In the second part of the paper the variations in the shape of the funnel near the exit opening are explored in detail.
|Item Type:||Book Section|
|Additional Information:||The authors wish to acknowledge the contribution by Paul Mason who enthusiastically and effectively assisted in the early laboratory work. He is being sincerely missed by all of us. The authors would like to express their gratitude to the National Science Foundation for support under Grant No. ENG-7615043 and to Union Carbide Co. for their continuing interest and financial support.|
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|Deposited By:||Christopher Brennen|
|Deposited On:||14 Dec 2004|
|Last Modified:||26 Dec 2012 08:39|
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