Testing and application of a practical new 2D hydrodynamic model

Abstract

A significant amount of effort is being directed towards finding ways to improve the management of urban drainage to reduce flooding. It is recognized that an integrated modelling approach is required, linking rivers and their floodplains with surface water and foul drainage systems. As a result of this, flood inundation modelling methods are starting to converge. The existing 1D InfoWorks software has recently been enhanced to include a 2D flood modelling capability. This 2D hydrodynamic modelling software incorporates links with the already existing 1D software for rivers (InfoWorks RS) and network systems (InfoWorks CS). This paper describes the results of a series of analytical tests used to validate the robustness of the new 2D modelling engine, results of its application to a real case study and, in some cases, comparisons of the results with other 2D flood models.

Application and validation of mortality functions to assess the consequences of flooding to people

“…The velocity is a factor that is very important in the application of the mortality functions; therefore, it has to be noticed that a two-dimensional (2D) finite difference model was used here. This implies a slight underestimation in the velocities, mainly in the transition dry/wet cells (Gutierrez Andres et al, 2008).…”

Testing a new two‐dimensional flood modelling system: analytical tests and application to a flood event

“…The specific tests are detailed in Table 1. The objective of the tests is to highlight any deficiencies in the 2D numerical solution by comparing the simulated results with the corresponding analytical solutions (Gutierrez Andres et al, 2008). It is possible to derive analytical or pseudoanalytical solutions for these tests as the test geometry and the initial conditions are simple (the analytical solutions are described in Appendix A).…”