CSD Hydrodynamics: An analysis of a CSD in coastal conditions, and the effect of flexible spud keeper configurations on the hydrodynamic response

Cutter suction dredgers (CSD) are highly vulnerable to large wave loading due to their stiff, spud-based mooring. Many mitigations targeted at reducing the resulting stresses on the spud and other critical operating components have been proposed in recent years, most notably by adding a level of flexibility to the connection between the pontoon...

Towards simulating flow induced spillage in dredge cutter heads using DEM-FVM

When dredging rock using a Cutter Suction Dredger the high amount of spillage is problematic, since it prevents an energy efficient removal process. This papers presents a coupled DEM-FVM method to simulate spillage, that can be used for optimizing the design and working method of the Cutter Suction Dredger. In these simulations, the challenge...

Modelling Spillage in Rotating Cutter Suction Heads: A combined Finite Volume and Discrete Element Model

Due to an increased demand for transport, ships become larger, needing a larger navigable depth. For these reasons a waterway needs to be dredged and a Cutter Suction Dredger is a vessel suitable for this operation.<br/><br/>A Cutter Suction Dredger is a floating vessel which removes sand, clay or soft rock from sea or river beds. It has a...

Improving the current service design for new Beaver dredging vessels: Applying servitization methods to create different tiers of service agreements, increasing customer retention

This thesis combines a high-tech, capital product, with servitization methods in order to create a product-service system. Servitization has allowed companies to align their interests and create a co-creation environment. The overall objective of this thesis was to find an improvement over the current service design of Beaver vessels. This new...

Development of a numerical model for Cutter Suction Dredgers: A time domain analysis of a CSD in operation

A Cutter Suction Dredger (CSD) is a vessel that is used to cut hard soils with precision. It is moored stiffly through a spud pile while the soil is being cut. This, in combination with wave loads, causes the whole system to be dynamically challenging and nonlinear. Previous attempts to model a CSD in operation have been limited to the frequency...

On creating a numerical model for estimating spillage in a cutter suction dredger while cutting sand

Great Lakes Dredge &amp; Dock (GLDD) is one of the biggest dredging companies in the USA which provides engineering services in dredging and land reclamation. GLDD came up with an idea to develop a working model that can estimate spillage when using a cutter suction dredger (CSD) for cutting soft material like sand. The main reason for this is...

A Cutter Suction Dredger in waves: Assessment of loading on the structural parts of a Cutter Suction Dredger in waves

The CSD650 is the largest cutter suction dredger produced by Damen Dredging Equipment (DDE) in Nijkerk. To provide for a wider range of clients, the CSD will be used in more coastal conditions. Therefore, it is important to study the behaviour of a cutter suction dredger in waves. In this context the following research question is formulated: ...