Dilute suspensions particle fall speed

In the case of a dilute suspension [/, = Uj vvhere Uq is the infinitely dilute suspension, particle fall speed, which for the case of rigid spheres is given... 

Particle fall speed in infinitely dilute suspension... 

The above equations can be used to deduce the properties of the suspension from observations of the front speeds, typically the one separating the clarified layer from the suspension. For example, knowing the fall speed (Eq. 5.4.6), we can determine the effective particle size if the particle density has been found independently. The extension of the results to infinitely dilute systems containing particles of two or more sizes (polydisperse systems) is straightforward and will not be discussed further here. It may only be mentioned that with different fall speeds there will be as many distinct downward-moving fronts as there are particle sizes. From measurements of these front speeds the particle sizes can be determined as for the monodisperse system. 

---

See also in sourсe #XX -- [ , ]

---