Optimizing harbour maintenance strategies using Delft3D and D-Flow Flexible Mesh

Hasselaar, R. W.; de Boer, W.P.; Luijendijk, Arjen

Optimizing harbour maintenance strategies using Delft3D and D-Flow Flexible Mesh

Conference paper (2013)

Authors

R. W. Hasselaar Deltares

W.P. de Boer Deltares

Arjen Luijendijk Deltares, Coastal Engineering -

Research Group

Coastal Engineering () (TU Delft)

Delft3D D-Flow Flexible Mesh Unstructured grid Maintenance strategies Harbour sedimentation Density gradients

To reference this document use:

http://resolver.tudelft.nl/uuid:909b6c5d-0f6d-4a16-8e75-79b5e8884802

More Info

expand_more

Published Date

2013

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Civil Engineering & Geosciences

Department

Hydraulic Engineering

Research Group

Coastal Engineering

Abstract

A study of siltation processes was undertaken for the harbour of Harlingen in the Netherlands, to investigate their relative importance for potential sedimentation. Three distinct harbour siltation processes were studied: tidal filling and emptying, horizontal eddy circulation in the harbour mouth and density driven vertical circulation. The Harlingen case, with its complex harbour geometry, seemed a promising candidate for a very early pilot application of D-Flow Flexible Mesh, a new hydrodynamic simulation code. Objective of this paper therefore was to investigate its performance, flexibility and efficiency by means of a qualitative comparison with an existing calibrated Delft3D curvilinear model. It was found that the flexible mesh allows for a more precise distribution of high resolution grid cells and capturing of complex geometries using a local triangular network. Moreover, the accuracy of the model was in line with existing Delft3D results. The tide and density driven current were found to be the main contributors to the siltation in Harlingen. Concluding, the applied research method combined with the Flexible Mesh approach look like a promising tool to help identify possible mitigating measures against harbour siltation problems.