Sharp Interfaces in Sedimentation

Interfaces or discontinuities in concentration occur in the sedimentation or settling of particle suspensions. 

In the remainder of this chapter, for convenience, the symbol C will be used to represent the particle volume fraction 1 8. Also for convenience the particle 

The interface is falling at a velocity Hint- All velocities are measured relative to the vessel walls. Assuming incompressible fluid and particles, the mass balance over the interface gives 

on a flux plot (a plot of Ups versus concentration)  

---