[laura.c]

I am using full momentum, I run yesterday with diffusion wave and it works, the water level is lower. Thank you!
Although we never use diffusion wave ..

[laura.c]

Hello,

You are right!! the problem is solved!
Thank you very much!

Although it doesn’t happen with all structures,… strange problem

[laura.c]

Yesm here I attached a wetransfer link

I only send the small model, that it happens as well… in the big model the water starts suddenly to flow out from the culvert the same time starts the water flowing from upstream BC

Thanks!!!

https://we.tl/t-CBSpVy3nYf

[laura.c]

Thanks Luis for your reply

I used already”individual barrel centerlines” to enter the coordinates, anyways I checked again that as you said , but still the problem is not solved.

Here I attached a picture that shows the culvert editor…

The second picture shows the stage and flow hydrographs from this culvert…

[laura.c]

– I try to run it without the structures and it didn’t occur

– Downstream I use normal depth as BC

I did a trial and I have resized the model (do it smaller), to try differents coeficients and see if it doesn’t happen….but still it happens…

Here I attached a new image with a zone of the model only trying with the downstream structure… the first picture is the result without the structure and the second with the structure.

[laura.c]

What’s the problem?

[laura.c]

Thanks for your reply,

I use 1 second computation interval, and 5 minutes mapping output interval. The first picture I add below shows all the model, the blue arrow indicate where is the upstream boundary condition, and it didn’t start yet to flow from the upstream BC, but as you see there is water coming out from many structures. The second picture shows a zoom in the downstream structure where water is flowing…

I didn’t use warm up period,…maybe is that….

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