Hi,
I have constructed a sediment transport model and am having issues getting the water surface elevations for a 24hr sediment transport simulation with just one flow value to match the water surface elevations for a steady flow simulation at the same flow.
In more detail, I’ve inserted a flow series at the uppermost boundary and filled in one row at 2045 cfs for 24.1 hours. I have three flow change locations and each has a lateral flow series boundary with one flow and 24.1 hours as the duration. My downstream boundary is a stage series with one row filled in at 5.35 ft for a duration of 24.1 hours.
The steady flow simulation has this same flow at the uppermost boundary and the downstream boundary is defined with the known WS of 5.35 feet.
When comparing the two, the downstream most cross sections both match at 5.35 feet which means the downstream stage boundaries are being recognized. The upstream most cross sections also match. However, the majority of the interior cross sections differ, on a scale of multiple feet at times.
Can anyone help with this? The geometry, flow, downstream stage, and flow change locations are all the same across the two simulations. I want to verify that my sediment transport simulation is set up correctly before I remove a dam in the river and model the sediment transport.
Thank you for the help