UK EA benchmark 4 (Water Module)

This page contains the test case 3 of the UK benchmark named Test 4 – Speed of flood propagation over an extended floodplain as well as its result generated by the Water Module in the Tygron Platform.

The objective of the test is to assess the package’s ability to simulate the celerity of propagation of a flood wave and predict transient velocities and depths at the leading edge of the advancing flood front. It is relevant to fluvial and coastal inundation resulting from breached embankments.

Description

This test is designed to simulate the rate of flood wave propagation over a 1000m x 2000m floodplain following a defence failure, Figure (a). The floodplain surface is horizontal, at elevation 0m. One inflow boundary condition will be used, simulating the failure of an embankment by breaching or overtopping, with a peak flow of 20 m 3 /s and time base of ~ 6 hours. The boundary condition is applied along a 20m line in the middle of the western side of the floodplain.