flux, ,

The packing density can also be expressed as , where equals the bed porosity.

Good values of for natural systems range from 0.45 to 0.75. A typical value for spherical grains is 0.64, as given by random close packing. An upper bound for close-packed spherical grains is 0.74048 (see sphere packing for more details); this degree of packing is extremely improbable

1.Previous
3.Next