Reliability improvement of the dredging perception system: A sensor fault-tolerant strategy

In the dredging industry, the automation and accuracy of the Dredging Perception System (DPS) are vital for operational efficiency and environmental safety. Current DPS implementations face challenges with sensor fault tolerance, leading to system unreliability and increased false alarm rates that can disrupt dredging operations. We propose a...

On Wind Turbine structural stiffness influence on wake flow

In this work we test a Fluid–Structure Interaction (FSI) method based on the SOWFA+ OpenFAST framework. The linear structural module of FAST is coupled to SOWFA's Actuator Line simulations to perform the aeroelastic analysis of a wind tunnel scaled model (1:75) of the DTU 10 MW turbine. The objective is to give a quantitative description of...

Revisiting van der Waals Radii: From Comprehensive Structural Analysis to Knowledge-Based Classification of Interatomic Contacts

Weak noncovalent interactions are responsible for structure and properties of almost all supramolecular systems, such as nucleic acids, enzymes, and pharmaceutical crystals. However, the analysis of their significance and structural role is not straightforward and commonly requires model studies. Herein, we describe an efficient and universal...

CSD Spillage Model for Sand and Rock: A Particle Size-Agnostic, Adaptable Engineering Model for the Prediction of Cutter Suction Dredge Spillage Rates

CSD spillage is defined as “any soil that is dislodged above the lowest cutter tip trajectory of a single swing, but is not sucked into the suction pipe”. In addition to higher energy consumption and material wear for delivering the targeted depth, spillage can lead to a variety of environmental issues. As of yet, no analytical model exists in...

A Cutter Suction Dredger in Operational Condition: Implementation of a Cutter Force Function in a dynamic multi-body model

Modern large Cutter Suction Dredgers utilize anchors, swing wires, a cutter head and a spud, which enables the CSD to excavate sand and tough rock masses with a relatively high accuracy. A drawback of the relatively stiff is that the ship often encounters problems in certain wave conditions. Several models exist which study the dynamic effects...

A framework towards forward cooperation in the product life cycle of dredging equipment

The Dutch shipbuilding industry has a real competitive force in building complex, specialized and multipurpose vessels (Rabobank, 2014). However, the Dutch maritime sector has to deal with strongly growing competition worldwide. For the dredging sector this implies the need to innovate in order to remain competitive. This research focuses on the...

Multidisciplinary design optimization of wing shape with nacelle and pylon

A Multidisciplinary Design Optimization (MDO) system for a wing with nacelle and pylon is developed. The present MDO system is based on the integration of Computational Fluid Dynamics (CFD) codes and NASTRAN based an aeroelastic-structural interface code. The Kriging model is employed to save the computational time of objective function...

Secondary nucleation attributable to the combined effects of crystal-impeller and crystal-crystal collisions