1 m in a vessel of cross-sectional area 0.04 m2 . The mass of solids in the  bed is 50 kg and the surface- volume mean diameter of the particles is 1mm.  A liquid of density 800 kg.m3 and viscosity 0.002 Pa s flows upwards  through the bed, which is restrained at its upper surface. (a) Calculate the voidage (volume fraction occupied by voids) of the bed. (b) Calculate the frictional pressure drop across the bed when the volume  flow rate of liquid is 1:44m3

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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5. A packed bed of solid particles of density 2500 kg/m3 occupies a depth of 
1 m in a vessel of cross-sectional area 0.04 m2
. The mass of solids in the 
bed is 50 kg and the surface- volume mean diameter of the particles is 1mm. 
A liquid of density 800 kg.m3
and viscosity 0.002 Pa s flows upwards 
through the bed, which is restrained at its upper surface.
(a) Calculate the voidage (volume fraction occupied by voids) of the bed.
(b) Calculate the frictional pressure drop across the bed when the volume 
flow rate of liquid is 1:44m3
/h. 

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