Author： Hirota Mitsuaki
Publisher： VSP
ISSN： 1568-5527
Source： Advanced Powder Technology, Vol.9, Iss.1, 1998-01, pp. : 71-80
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Abstract
The characteristics of the horizontal conveyance of dense phase flow of powder were experimentally investigated using a progressive cavity pump. The results show that the pressure drop depends on the dynamic friction coefficient of the powder, i.e. dynamic wall friction coefficient or dynamic internal friction coefficient. At the same time, the friction factor also depends on the dynamic friction coefficient. Next, the correlation between the friction factor and the dynamic friction coefficient of powder was discussed. The pressure drop and friction factor were affected by the flow pattern of the powder. These should be estimated by the dynamic internal friction coefficient for plug flow, but in other cases these are estimated by the dynamic wall friction coefficient.
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