Sape Miedema

Sape obtained both his MSc in Mechanical Engineering and PhD in Dredging at Delft University of Technology. Since 1987, he has been an assistant, then associate, professor at the Chair of Dredging Technology, then as a member of the management board of Mechanical Engineering and Marine Technology. He was appointed Educational Director of the MSc programme in Offshore Engineering in 2005 and since 2013, he is also Educational Director of the MSc programme in Marine Technology.

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Articles By Sape Miedema

Experimental study on the adhesion factor of clay

A major mechanical property of clay is the adhesion factor that reflects the ratio between its cohesive and adhesive strength under different water content.

DOWNLOAD PDF Document | 3,9 MB
Modelling the waterjet cable trenching process on sand dunes

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.

DOWNLOAD PDF Document | 1,35 MB
Can a preliminary model describe CSD spillage due to centrifugal advection?
Can a preliminary model describe CSD spillage due to centrifugal advection?

Depending on its size and installed power, a Cutter Suction Dredger is capable of cutting a wide range of soil types. Although precise and relatively efficient, a CSD can spill significantly. The authors propose a preliminary model which describes spillage due to centrifugal advection.

DOWNLOAD PDF Document | 2,29 MB
Which slurry transport regime should be used and why?
Authors: Sape Miedema

With five possible flow regimes to choose from for slurry transport, selecting just one can require consideration. Fortunately, one of these regimes has a simple criterion: a ratio of the particle diameter to the pipe diameter.

DOWNLOAD PDF Document | 5,39 MB
Modelling the effect of water depth on rock cutting processes with the use of discrete element method
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.

DOWNLOAD PDF Document | 1,03 MB