User defined sediment transport formulae (.dll file)

RE: User defined sediment transport formulae (.dll file)

2020-04-10T08:24:51Z

It is very difficult to estimate sediment fluxes on beaches due to the combination of steady flows currents and oscillatory flows waves https://thecustomerssurvey.com/getmyoffer-capitalone-com

RE: User defined sediment transport formulae (.dll file)

2019-11-27T20:39:27Z

Hello blanky,

I did the same thing. If you look for tram1.f90 subroutine in the compiled source code (in visual studio), you will find that tram1.f90 is the van Rijn (1993) default transport formulae. Inside tram1.f90, there are three other subroutines. bedbc1993.f90 contails the reference concentration formulae - I simply replaced the existing one with my own, and declared all my own variables. As Adri mentions in the above posts: you can either copy and paste the source code into a .dll file, or you can simply replace the Ca formula in the source code with your own!

Best of luck,
Gabriel

RE: User defined sediment transport formulae (.dll file)

2019-11-11T20:54:52Z

I am trying to incorporate my own suspended se snaptube telegram web concentration formulae (Ca) into the Delft3D-FLOW module using the .dll file (as indicated in Appendix B.9.4). I have only developed a new Ca model, not suspended sediment transport rate or the bedload rate, etc.

RE: User defined sediment transport formulae (.dll file)

2019-09-05T13:36:43Z

Hi Adri,

I see. When taking the first option you suggested, is there somewhere where I can find the source code of the default formulas?
Is it the tram1.f90 in src\utils_gpl\morphology\packages\morphology_kernel\src directory?

Thanks again,

Gabriel

RE: User defined sediment transport formulae (.dll file)

2019-09-04T16:44:29Z

Hi Gabriel,Once you're using a transport formula in your own .dll file, you have to specify all the sediment transport rates. There are two ways to do this:

Copy the source code of the default formulas into your code that you use to build your own .dll file.
Forget about using your own .dll file; just change the Ca formula inside the default code.

Looking to subroutine eqtran, line 738 and further: the "ssus" from your .dll file is indeed transformed into a reference concentration and used further on.Regards,Adri

User defined sediment transport formulae (.dll file)

2019-08-09T20:45:08Z

Hello,

I am trying to incorporate my own suspended sediment concentration formulae (Ca) into the Delft3D-FLOW module using the .dll file (as indicated in Appendix B.9.4). I have only developed a new Ca model, not suspended sediment transport rate or the bedload rate, etc.

Do I need to include a set of equations for sediment transport rates (for both suspended load and bed load) as well in the .dll file? Or only the new Ca formula? Ideally I would like to replace ONLY the Ca model and continue to use the default models for all other processes..

Also, for example, I see the reference concentration is used to compute sink/source terms, and also erosive flux due to upward diffusion, etc. Will the software automatically use my new Ca model if I call it in using the .dll file? I do not really understand how the process works (despite having read the section in Appendix B.9.4) Please advise! Any help would be much appreciated!

Thanks,
Gabriel