NUMERICAL MODELLING OF LONG-TERM MORPHOLOGY IN THE SURF ZONE OF THE BELGIAN COAST

Proceedings of the International Conference on Coastal Engineering

Koen Trouw²  Li Wang¹  Joris Vanlede³  Nicolas Zimmermann¹  Bart De Maerschalck³ 

[1] International Marine Dredging Consultants (IMDC);Fides Engineering;Flanders Hydraulics Research

关键词: longshore transport;    surf zone;    Belgian Coast;    morphology model;    Delft 3D;    MorMerge;   

DOI  :  10.9753/icce.v34.sediment.42

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

Longshore sediment transport in the surf zone plays a considerable role in the long-term morphological behaviour of the Belgian coast. In order to be able to analyse coastal protection measures in the future, a 2D morphology model is developed within the Delft3D software suit using a curvilinear grid which follows the coastline closely. A schematised tide and wave climate is used as boundary conditions for the model. In addition, a constant morphological acceleration factor (MorFac) and the MorMerge online-parallel approach are employed to achieve modelling of the long-term morphology within reasonable computation time. Qualitatively, most major morphological changes are well captured by the model. The modelled sedimentation/erosion is further quantitatively compared with beach erosion/deposition trends of the last 25 years presented in Houthuys (2012). The model still shows a reasonableagreement and its quality is discussed.

【 授权许可】

Unknown