Cables for offshore wind farms in the North Sea are buried for protection. A highly variable seabed topography influences the trenching process in sandy soils. A model has been developed to estimate the influence of sand dunes on the trenching process.
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.
IADC’s Young Author Award winner François De Keuleneer and co-authors Joris de Vroom and Arjan Mol discuss the Workability Tool which ensures captains of specialised vessels can make informed decisions to dredge during favourable wave conditions.
An analytical method that was developed and applied to identify the optimal channel layout and dredging depth for safe navigation in the Mearim Port concept in Brazil.
Modelling the effect of water depth on rock cutting processes with the use of discrete element method
Efficient rock cutting is still a challenge in the dredging industry. A new method that takes into account the effect of water depth could refine rock cutting processes.
As a result of the closure of the Zuider Sea 75 years ago, as well as subsequent interventions and natural disturbances, the Wadden Sea is no longer in an equilibrium or stable condition, but modelling indicates that in the long-term a new dynamic equilibrium state should return.
For production, sand quality and environmental reasons predicting the amount of the so-called overflow losses when using a trailing suction hopper dredger is very important.