Hello,
I’m trying to run a simple simulation using HEC-RAS which is as follows:
– Flow area of 90 km2
– I consider the flow area as a boundary condition by adding daily precipitation data.
– Downstream boundary conditions as normal depth.
The problem is that while computing, I always receive messages on the calculation windows of non-converging cells. I have tried to increase and decrease the time step ( 1min, 1h, 6h, 1day) but the problem persists.
Do you think that the problem is related to the calculation time step. Or the problem is due to the use of daily data, perhaps we should use hourly data for precipitation?