Sub: chemical engineering $($fluidization$)$

Caption: $$please answer all sub$-$questions, will upvote for sure$$

Calculate the velocity of water that would be required to fluidize spherical

particles with $SG=1\mathrm{.}6$ and diameter of $1\mathrm{.}5mm,$ in a tube with a diameter of

$10mm.$ Also, determine the water velocity that would sweep the particles out of

the tube. Assume:

$($a$)$ The bed starts as a packed bed and is fluidized when the pressure drop due

to friction through the bed balances the weight of the bed.

$($b$)$ The bed is considered to be a "swarm" of particles falling at the terminal

velocity of the "swarm."

$($c$)$ Compare the results of $($a$)$ and $($b$).$ Comment on any uncertainties or lim$-$

itations in your results.