User Forum of Software BASEMENT

huangvy

User

Registered: 2015-07-23

Posts: 24

How to prepare the suspend load initial file?

Dear all,
      I am trying to model one dimensional sediment transport case using BASEMENT v2.6. When I prepare the block of suspended_load, the initial file is required. Is there any one knows the format of the file?

Best wishes!

Wei Huang

Last edited by huangvy (2016-04-05 02:39:23)

Daniel Ehrbar

Developer

Registered: 2014-09-05

Posts: 7

Re: How to prepare the suspend load initial file?

Hi Wei,

this is an example of an initial file for suspended load transport in 1D:

time: 0.0
C    Mixture
CS1    0.0005    suspended_load
CS2    0.0005    suspended_load
CS3    0.0005    suspended_load
...

In the first row, you define the initial time (here: 0.0). In the second row, you write "C" and "Mixture" (this is needed). In the third and following rows, you add your initial state in the following form: name of the cross section - initial concentration - mixture. Please be aware that concentrations are given in volume concentation, i.e. in "volume of suspended material per volume water". In the example above, the volume concentration would be 0.05%.

Let us know if it works.

BASEd regards,
Daniel

huangvy

User

Registered: 2015-07-23

Posts: 24

Re: How to prepare the suspend load initial file?

Hi Daniel,

Thanks for your kind reply. However, the software is still out of work although I prepared the file following your example. It can run with the bedload transport only. Once the suspended-load module is added, the soft cannot start with a tip "no response". The block of suspended load is listed as following:
            SUSPENDED_LOAD {
                PARAMETER {
                    local_slope        = on
                    scheme             = quickest
                    sink_velocity_type = vanrijn
                    exchange_type      = concentrations
                    sediment_exchange  = on
                }
                INITIAL {
                    file = regionH_3SedSus1.dat
                }
                BOUNDARY {
                    name    = inlet_sus
                    type    = suspension_discharge
                    string  = upstream
                    file    = Sediment_stationary.txt
                    mixture = IniBed
                }
                BOUNDARY {
                    name   = outlet_sus
                    type   = out_down
                    string = downstream
                }
            }
        }
Is there anything wrong? How can I fixed it? Your kind help is appreciated.

Wei

 

Hi Wei,

this is an example of an initial file for suspended load transport in 1D:

time: 0.0
C    Mixture
CS1    0.0005    suspended_load
CS2    0.0005    suspended_load
CS3    0.0005    suspended_load
...

In the first row, you define the initial time (here: 0.0). In the second row, you write "C" and "Mixture" (this is needed). In the third and following rows, you add your initial state in the following form: name of the cross section - initial concentration - mixture. Please be aware that concentrations are given in volume concentation, i.e. in "volume of suspended material per volume water". In the example above, the volume concentration would be 0.05%.

Let us know if it works.

BASEd regards,
Daniel

Daniel Ehrbar

Developer

Registered: 2014-09-05

Posts: 7

Re: How to prepare the suspend load initial file?

Hi Wei,

did you try to run your model with suspended load transport only (i.e. without bed load transport)? Maybe there is a problem in the interaction of both transport modes. Did you vary the pickup factor? This factor can be an important parameter as well.

Could you please upload your files so that I can have a look at your model in detail?

BASEd regards,
Daniel

huangvy

User

Registered: 2015-07-23

Posts: 24

Re: How to prepare the suspend load initial file?

Dear Daniel,
     I tried to run the model only with the suspended load, there is an error "Mixture: suspended_load is not defined. Please check the mixture names. Program cannot continue." I don't know how to fix it . Moreover, I am not aware of how to upload files here. Maybe I could email you?

Yours,
Wei

Daniel Ehrbar

Developer

Registered: 2014-09-05

Posts: 7

Re: How to prepare the suspend load initial file?

Hi Wei,

maybe there was a misunderstanding: in the third column of your initial file, you define the name of your mixture. This is the name you defined in BEDMATERIAL > MIXTURE > name. In my example, I named it "suspended_load", in your case it might be a completely different name. Basically, BASEMENT needs to know the mixture of the initial suspension. You can choose any of your mixtures.

If this does neither help you nor solve the problem, feel free to send me an e-mail.

BASEd regards,
Daniel

sajjad

User

Registered: 2014-10-01

Posts: 101

Re: How to prepare the suspend load initial file?

Hi,

  I am trying to simulate  basechain morphological model . The model runs with bedload but as i try to add suspended load, the computation blows up.
Following error message is thrown up

// --------------------------------------------------
// BASEMENT log file:
// Version:  v2.8.2// bmc file: E:/LocalF/Basement/lake_HaHa_student/run_lake.bmc
// started:  Thu Nov 23 23:47:52 2023
// --------------------------------------------------
/*

EXCEPTION -> z1 != z0, in file:
   C:\Users\matthias\Documents\BMv2\basement-v2\src\BASEchain\BCHydrograph.cpp
   on line 89, Version: v2.8.2, compiled at: Jan 19 2022, 00:08:15

*/

Will appreciate any help.