[GB91]

Hello ckatsoulas,

At the first tiime, when i see the results, i suppouse that there are problem with units or something else…but i use SI (units system) and put input file in metres and mc/s.
Yes, at first i tried a 2d modelling simulation. After that i tried a 1d modelling and i extracted the cross section from terrain into ras mapper.
Also in 1d simulation i have the same problem. Depth of water very high compare to cross section deepth.

What can i do?

[GB91]

Hello Scott Miller and thank you for the aswer.

I tried to reduce the time step interval and add more XS cross section but the problem still the same.I suppouse there are problems in the up stream boundery conditions because in the end of the area i have to analayzed the water level is quite good….but at the beginnig, near the upstream boundary conditions there are problem.
I only put an simple hydrograph of a 100year discharge. Also, when i animate the process in the RasMapper, the input flow seems to be variable…

How can be possibile?

[GB91]

This one is the flow hydrograph in input. I really don’t undertand why it has this shape and why the stage reach 8000m.
Please help me to find a solution.

Thanks everyone.

[GB91]

I noticed that there are some sections at dowstream that have a Q Total much more grater that the maximum flow in input. How it can be possibile?

[GB91]

At first, thank you for the replay, ckatsoulas.

Now i’m traing to perform an unsteady flow analysis in 1d dimension and there is the same problem.
With steady flow data the depth of water is correct…when i put unsteady flow data with hydrograh there is the problem.
It can be possibile that i must change my computer’s languages to english to perform the correct simulation?
That problem seems to be a problem of unit system or something else….

Have you any solutions?

Thankyuou

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