IDENTIFICATION OF SOME RELEVANT PROCESSES IN COASTAL MORPHOLOGICAL MODELLING

Proceedings of the International Conference on Coastal Engineering

J.A. Zyserman¹  Hakeem Johnson¹  I. Broker¹ 

[1] Danish Hydraulic Institute

关键词: coastal modeling;    morphological modelling;   

DOI  :  10.9753/icce.v24.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

This paper presents a coastal morphology modelling system based on an explicit forward time integration scheme for the morphological evolution involving the following stages: a) Initialisation, b) Sediment transport computation using a deterministic sediment transport model, c) Wave computation using an arbitrary wave model, d) Hydrodynamic computation assuming a mobile bed evolving at dzldi, with optional use of a module to determine the apparent roughness in combined wavecurrent motion and e) Bed level update scheme using an improved second order Lax Wendroff scheme. A series of numerical tests is performed with the aim of evaluating the effect of space-varying hydraulic roughness in combined waves and current, choice of wave modelling approach and of directionality of the waves on the morphological evolution. A detached breakwater is used as test case.

【 授权许可】

Unknown