
103Chapter ve: 1D shallow water ow in nonrectangular channels
of gauges were installed in the physical model to measure the water sur-
face level after the release of water at the upstream end of the channel.
Selected gauges along the main river axis (P1, P5, P18, P21, and P26) are
used to compare the simulation results with the measured data. The com-
putational mesh with 62 cross-sections used in this simulation is shown
in Figure5.25.
A dam-break ood occurred after the release of water from the rect-
angular tank at the upstream end of the channel. The measured discharge
from the rectangular tank is used as the inow boundary condition with ...