FMA Challenge 1 (1D-2D linked): Difference between revisions

The modelingmodelling approach represented the in-bank area with 1D elements dynamically linked to a 2D grid domain to represent the overbank floodplain.

The 1D sections provided were used for the in-bank topography. The overbank (2D) areas were modeledmodelled using 10ft and 15ft resolutions. The 2D grid dimension (rotated) was 17,500ft by 8,000ft. A total of 87 cross-sections were used for the 1D in-bank domain.

Structures were modeledmodelled as a combination of bridges and culverts. For bridges, height varying energy loss tables were used based on the Hydraulics of Bridge Waterways (Bradley, 1978). For culverts, TUFLOW simulates all possible inlet and outlet controlled flow regimes with automatic switching between regimes. The calculations of culvert flow and losses are carried out using techniques from “Hydraulic Charts for the Selection of Highway Culverts” and “Capacity Charts for the Hydraulic Design of Highway Culverts”, together with additional information provided in the literature such as Henderson 1966.