Numerical investigation of the head and unsteady flow characteristics of a dredge pump loading high-concentration sands

The head of a dredge pump is an important performance parameter and a strongly fluctuating head may affect the operating stability of the pump unit. The IADC Young Author’s Award paper analyses unsteady characteristics of pump performance to improve control of the dredge pump.

Carbonate sand fill
Carbonate sand fill

The properties of carbonate sand are different than more commonly used quartz sands and its behaviour must be considered when using it for fill.

Hydraulic Transport of Sand/Shell Mixtures in Relation with the Critical Velocity
Hydraulic Transport of Sand/Shell Mixtures in Relation with the Critical Velocity

When pumping shells through a pipeline, a much higher velocity is required to make them erode and go back into suspension, because although the settling velocity of shells is much lower than equivalent sand particles, the erosion velocity is much higher.