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

Volp, N.D.; Van Prooijen, B.C.; Stelling, G.S.

doi:doi:10.1002/wrcr.20324

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

Title

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

Author

Volp, N.D.
Van Prooijen, B.C.
Stelling, G.S.

Faculty

Civil Engineering and Geosciences

Department

Hydraulic Engineering

Date

2013-07-16

Abstract

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-grid cell. It is shown in two examples that the results of coarse-grid simulations become as good as high-resolution results, but at much lower computational cost.

Subject

shallow water equations
subgrid
salt marsh
effective depth
computational fluid dynamics
friction depth

To reference this document use:

http://resolver.tudelft.nl/uuid:eea38287-fc46-4daa-98bd-088bac2bbed6

DOI

https://doi.org/10.1002/wrcr.20324

Publisher

American Geophysical Union

Embargo date

2014-01-16

ISSN

0043-1397