The Dynamic Response of a 3D Mussel Dropper in Waves: The construction of a 3D numerical model for a series of connected pendulums

Offshore mussel cultivation is gaining popularity, with the longline technique emerging as a popular method for cultivation. The longline technique entails multiple backbones from which mussel lines that loop around it are suspended and which are kept afloat by buoys. Overdulve Offshore Services designed the Cees Leenaars, a semi-submersible...

Urban computational fluid dynamics simulations set-up validations

Computational Fluid Dynamics (CFD) simulations for residential areas are becoming increasingly important as the urban population keeps growing and extreme weather conditions due to climate change are becoming more prevalent. Since CFD simulations simulate and visualise fluid flows, users can analyse and predict air flows in urban environments,...

The relationship between linearised 3D and 2DH models for tidally dominated shallow waters

The water motion computed using 3D and 2DH models in tidally dominated shallow waters can, in some cases, differ significantly. In 2DH models, bed friction is typically parametrised in terms of the depth-averaged velocity, whereas in 3D models, typically the near-bed velocity is used. This difference causes the bed shear stress in 2DH models...

Automation and Optimization of Computer-Assisted Surgery Planning of Corrective Osteotomies for Forearm Malunions

Corrective osteotomies are the indicated treatment for complex forearm malunions. The use of 3D computer-assisted preoperative planning offers significant advantages, such as improved comprehension of the multiplanar deformity and high accuracy. However, the clinical application of computer-assisted preoperative planning methods is limited due...

New Techniques and Methods for Modelling, Visualization, and Analysis of a 3D City

The recent years observe the vast development in new techniques and methods for modelling, visualization, and analysis of 3D digital cities, as the need of digital twins of urban environment in different applications and simulations has been increased dramatically. This special issue attempts to give an overview of the recent progress and...

Modeling Sand Wave Field Dynamics in the North Sea using Delft3D Flexible Mesh

Offshore wind farms are being built at an unprecedented pace in the North Sea. The Dutch government is aiming for a CO2 neutral energy supply by 2050 and vast cost reductions have turned (offshore) wind energy into a worthy competitor for other (green) energy sources. Most of the planned wind farms in the Dutch North Sea are located in areas...

Point Cloud Based Visibility Analysis: first experimental results

Visibility computed from a LiDAR point cloud offers several advantages compared to using a gridded digital height-model. With a higher resolution and detailed information, point cloud data can provide precise analysis as well as an opportunity to avoid the process of generating a surface representation or a solid model. Also a better inclusion...

Generating a full 3D Model of The Windmill (Molen de Roos)

Merging interior and exterior laser scanning point clouds of the historical windmill, completing the missing parts from airborne laser scanning data and trying different mesh generation methods for full 3D windmill model generation in order to be able to perform virtual visits in the future.

The behaviour of artificial archaeological remains during a one-dimensional compression test

The Dutch subsoil contains a lot of archaeological remains that need to be preserved for future generations. Until now, it is not possible to predict if these remains will stay intact under the pressure of a manmade structure like an embankment. The goal of this research is to investigate the behaviour of assemblies of artificial archaeological...

Digital Models – Proposal for the Interactive Representation of Urban Centres: The downtown Lisbon City Engine model

The idea of ‘city’ has now surpassed its physical concept. The emergence of the Internet and the growing development of information and communication technologies (ICT) have changed the behaviour of our society in the past decade and revolutionised the traditional ways of representing space. The classic 2D (floor plans, sections and elevations)...

Design and development of a hazard map for the positioning and siting of large jack-up rigs at the geologically complex areas of the Gulf of Suez

The aim of this research project is to develop a hazard map for punch-through failure during jack-up rig installation in the Gulf of Suez. This map can be used to make an upfront assessment of unfavorable foundation conditions at a proposed installation site. This is not self-evident due to the complex geological setting of the area. Data to...

Calibration suspended sediment model Markermeer

In deze studie is een computermodel voor het Markermeer opgezet, ingeregeld en gevalideerd. Het model beschrijft dynamsch de stroming van water, waterpeilen, golven en slib in het water en in de bodem. Het model is gecalibreerd voorde periode augustus 2007 - april 2008 en gevalideerd voor de periode daarna tot september 2008. In deze periode...

Modelling the seasonal dynamics of SPM with a simple algorithm for the buffering of fines in a sandy seabed

This paper discusses the application of a simple algorithm for the buffering of fines in a sandy seabed. A second layer is introduced in which fines may be stored during calm weather and from which fines may be resuspended during storms. The algorithm is applied first in a one-dimensional vertical (1DV) point model at a location in the North Sea...