Air, at $4000$C and $17$ bar$-$abs$,$ is used tofluidise $32700$ kg of sand in a cylindrical vessel.The diameter of the vessel is $3\mathrm{.}05$ m and that ofthe particle is $0\mathrm{.}147$ mm$.$ If the density of theparticles is $2690$ kg$/$m$3,$ calculate:$($a$)$ The height of the sand layer at theonset of fluidisation$($b$)$ The pressure drop in the fluidised bed$($c$)$ The minimum fluidising velocity$($d$)$ The velocity at which transportation ofthe particles takes place. Assumestreamline flow across the particles. Is theassumption correct?Air constant, R $=0\mathrm{.}287$ kJ$/$kgKViscosity of air at fluidizationconditions$=0\mathrm{.}032$ cpFind M from the curves of Fig $10\mathrm{.}12$