NUMERICAL MODELLING OF HYDRODYNAMICS AND SEDIMENT TRANSPORT IN THE SURF ZONE : A SENSITIVITY STUDY WITH DIFFERENT TYPES OF NUMERICAL MODELS

Proceedings of the International Conference on Coastal Engineering

Rosalia Delgado⁵  Dano Roelvink³  Nicolas Zimmermann¹  Koen Jacobus Martha Trouw⁴  Mieke Mathys² 

[1] IMDC;imdc;UNESCO-IHE Institute for Water Education,;Fides Engineering;Flanders Hydraulics

关键词: morphological modeling;    XBeach;    Delft3D;    beach dynamics;   

DOI  :  10.9753/icce.v33.sediment.23

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

A comparison between two very different numerical models is presented: Delft3D and XBeach.Delft3D (Deltares) calculates non-steady flow and transport phenomena that result from tidal and meteorological forcing.The wave propagation is calculated in the frequency domain.XBeach (Unesco-IHE, Delft University and Deltares) consists of formulations for short wave envelope propagation (time-dependent wave action balance), non-stationary shallow water equations, sediment transport and bed update.The model is able to resolve the time dependent long waves, which are important in the surf zone.A number of simplified cases are defined beforehand taking into account actual features and conditions existing in chosen problem areas. The examination of these simplified cases allows for the identification of driving processes and the assessment of the sensitivity to certain relevant parameters, with the advantage of working in scenarios of limited complexity and without excessive computational load.

【 授权许可】

Unknown