• When should you use subgrid sampling in 2D hydraulic modelling?

    Subgrid sampling (SGS) is an approach to 2D hydraulic modelling that allows more detail from the underlying ground model, often represented by a Digital Elevation Model (DEM) or Digital Terrain Model (DTM), to be retained within the computational mesh. Subgrid sampling isn’t simply a faster alternative to a conventional 2D mesh. A useful way to…