User Forum of Software BASEMENT

AlessandroCasalicchio

User

Registered: 2020-04-17

Posts: 8

Bedload boundary inflow

Hi,

I have a problem with the congruency between the bed boundary inflow (balance.dat output) and the amount of sediment I put in the model.

I used "sediment discharge" as inflow boundary of the Morphology block, and I put into the model 963'000 mc of sediment (underlying area of the sediment discharge curve)

The last raw of the bed boundary inflow of the balance.dat is 8'300'000 mc.

I don't understand why there is such a high difference between the two values.

Thank you
Alessandro

Matthias Bürgler

Developer

From: Zürich

Registered: 2019-04-04

Posts: 175

Re: Bedload boundary inflow

Hi Alessandro

I compared the output "bedload_boundary_inflow[m3]"  in balance.dat to the time-integrated valued Qsed at the inflow boundary for the Flaz-Tutorial and got consistent results. I recommend to check the cumulative sediment input at the inflow boundary with the following SPECIAL_OUTPUT and compare it to your sediment discharge file:

			SPECIAL_OUTPUT {
				type             = boundary_history
				boundary_values  = (Q Qsed integrate[Qsed] integrate[Q])
				output_time_step = 1000
				history_one_file = yes
			}

Best regards
Matthias