Boosted robustness of semi-implicit subgrid methods for shallow water flash floods in hills

The widespread availability of high-resolution Digital Elevation Models (DEM), has led to the development of subgrid numerical modeling techniques, based on Shallow Water Equations (SWE). Detailed DEM data is clustered as much as possible within a coarse grid cell that is preferably much larger than a raster pixel. This has considerable...

A finite volume approach for shallow water flow accounting for high-resolution bathymetry and roughness data

This study presents a finite volume hydrodynamic model for shallow water flow that computes on a coarse grid, but accounts for high-resolution bathymetry and roughness variations on a subgrid. The detailed information can be incorporated by using the assumption of a uniform flow direction and a uniform friction slope within a part of a coarse...

An accurate momentum advection scheme for a z-level coordinate models

In this paper, we focus on a conservative momentum advection discretisation in the presence of zlayers. While in the 2Dcase conservation ofmomentum is achieved automatically for an Eulerian advection scheme, special attention is required in the multi-layer case. We show here that an artificial vertical structure of the flow can be introduced...

Randvoorwaarden in WAQUA en TRIWAQ: Syllabus workshop

3D-numerieke modellering gedeeltelijk geopende Haringvlietsluizen: Sluisformuleringen en testberekeningen voor implementatie in TRIWAQ KEPS02, fase 1

Gevoeligheidsonderzoek 3D-NOORDWIJKRAAI-model: Variaties in roosterafstand, turbulentiemodel, bodemruwheid en windschuifspanning

Een vereenvoudigde numerieke methode in TRISULA

Een flexibel Noordzeemodel in 2 en 3 dimensies, gebruik makend van domeindekompositie: Voorstudie naar de technische en ekonomische haalbaarheid