Estimating sediment erosion of a centrifugal dredge pump’s impeller
Sediment erosion is a phenomenon of mechanical wear of components that decreases efficiency and uptime of the dredging process. Dredge pumps are designed to handle mixtures of water and solid particles with varying particle size from less than 0.002 mm to greater than 200 mm. A dredge pump’s overall effectivity in the field depends upon its uptime. Uptime is influenced by the number of times the pumping process is interrupted, which can be due to maintenance combating the material loss, clogging, etc. This research deals with the erosion phenomena by considering a framework of numerical models, capable of qualitative and quantitative erosion estimation, coupled with experiments for validation. Coordinate Measurement Machine (CMM) is used for surface roughness measurement before and after the experiment, thus depicting the material loss due to erosion.
From idea to reality: the UK’s first Sandscaping project
The Bacton Sandscaping scheme is a large-scale beach nourishment designed to protect the Bacton Gas Terminal from cliff and beach erosion while also reducing flood and erosion risk to the communities of Bacton and Walcott, buying the time they need for adaptation to coastal change.
Ecosystem Services
“Facts About Ecosystem Services & Dredging” describes how the value attributed to ecosystems and to dredging projects can be compared and evaluated.
Reducing Shoaling in the Texas GIWW and Erosion of Barrier Islands Along West Galveston Bay
How to protect the environment of the Texas Gulf Intracoastal Waterway and preserve a crucial economic link as well.
Erosion Behaviour of a Draghead
The IADC Young Author Award-winning paper verifies the agreement between the theoretical calculations for a new toothless draghead and the real situation when the draghead is being used.
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.
Seaward Coastal Defence Scheme Eierland
Working with the Dutch Ministry of Transport, Public Works and Water Management, dredgers construct a dam as a means to prevent coastal erosion.