Dense Phase Conveying
Dense Phase - Full Pipeline
The difference in pressure is higher
Material velocities are at their lowest
Material fills the pipeline
Dense Phase - Slug Flow
dense phase dune flow
The difference in pressure is medium-high
Material velocities are low
Material forms dunes while being conveyed
Dense Phase - Bed Flow
The difference in pressure is medium
Material velocities are medium to high
The saltation velocity is achieved for some particles in the material which partially fluidises to convey above a bed of material moving slower
Lean Phase (Dilute Phase)
The difference in pressure is lower
Material velocity is highest
The saltation velocity for all the particles is achieved which causes the material as a whole to be conveyed within the gas stream