On your first day of work at the plant, a worker behind you drops a bag of fumed silica and the powder instantly disperses into the air around you in a hazy cloud. While carefully not inhaling, you ask him how much silica was in the bag. It contained 100 kg of monodisperse silica spheres with a density of 𝜌 = 2.5 g/cc and a size of d = 10 μm. A ceiling fan spins overhead, producing an overall shear rate in the air of 5 s^(-1). If we can assume that the particles disperse instantly when dropped, and then begin to aggregate by fluid shear stresses immediately, what will be the number concentra

Question

On your first day of work at the plant, a worker behind you drops a bag of fumed silica and the powder instantly disperses into the air around you in a hazy cloud. While carefully not inhaling, you ask him how much silica was in the bag. It contained 100 kg of monodisperse silica spheres with a density of 𝜌 = 2.5 g/cc and a size of d = 10 μm. A ceiling fan spins overhead, producing an overall shear rate in the air of 5 s^(-1).  If we can assume that the particles disperse instantly when dropped, and then begin to aggregate by fluid shear stresses immediately, what will be the number concentra

anonymous · Answer

concentration of particles, in cm^(-3), after 5 minutes in a closed room measuring 8 meters on each side?