intro story D-Flow FM

 

D-Flow Flexible Mesh

D-Flow Flexible Mesh (D-Flow FM) is the new software engine for hydrodynamical simulations on unstructured grids in 1D-2D-3D. Together with the familiar curvilinear meshes from Delft3D 4, the unstructured grid can consist of triangles, pentagons (etc.) and 1D channel networks, all in one single mesh. It combines proven technology from the hydrodynamic engines of Delft3D 4 and SOBEK 2 and adds flexible administration, resulting in:

  • Easier 1D-2D-3D model coupling, intuitive setup of boundary conditions and meteorological forcings (amongst others).
  • More flexible 2D gridding in delta regions, river junctions, harbours, intertidal flats and more.
  • High performance by smart use of multicore architectures, and grid computing clusters.
An overview of the current developments can be found here.
 
The D-Flow FM - team would be delighted if you would participate in discussions on the generation of meshes, the specification of boundary conditions, the running of computations, and all kinds of other relevant topics. Feel free to share your smart questions and/or brilliant solutions! 

 

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We have launched a new website (still under construction so expect continuous improvements) and a new forum dedicated to Delft3D Flexible Mesh.

Please follow this link to the new forum: 
/web/delft3dfm/forum

Post your questions, issues, suggestions, difficulties related to our Delft3D Flexible Mesh Suite on the new forum.

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** PLEASE TAG YOUR POST! **

 

 

Sub groups
D-Flow Flexible Mesh
DELWAQ
Cohesive sediments & muddy systems

 


Message Boards

Execution error

GB
Gabriel Betancur, modified 9 Years ago.

Execution error

Youngling Posts: 20 Join Date: 8/24/11 Recent Posts
Hello,
I'm trying to run a simulation test, and an error happened: Executable "deltares_hydro.exe" or "delftflow.exe" not found on directory "C:/Delft3D/w32/flow/bin".
Any idea?
Thank you.

--
Gabriel
Bert Jagers, modified 9 Years ago.

RE: Execution error (Answer)

Jedi Knight Posts: 201 Join Date: 12/22/10 Recent Posts
Hi Gabriel,

The likely reason is indicated on the FAQ page for running simulations. The free installer that you get as member of the open source community does not include precompiled versions of the Delft3D-FLOW/MOR/WAVE executables. It's assumed that you compile them yourself and copy them into the appropriate folder of the installation as explained on this download page.

Best regards,

Bert
Adri Mourits, modified 9 Years ago.

RE: Execution error

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi Gabriel,

Alternatively you can use one of our service packages. See http://oss.deltares.nl/web/opendelft3d/services.

Regards,

Adri
JJ
Jamie Johnstone, modified 8 Years ago.

RE: Execution error

Youngling Posts: 3 Join Date: 1/19/12 Recent Posts
Hi Adri,
I am having the same problems and error message appearing.
I have tried to copy the "deltares_hydro.exe" and "delftflow.exe" into the "C:/Delft3D/w32/flow/bin" directory although it is still not functioning.

It now states an error in the flow running computational window that it 'Can not open shared library ''flow2d3d.dll'.

Any ideas? Should I download a service package?

Thanks for your help,
Regards
Jamie
Adri Mourits, modified 8 Years ago.

RE: Execution error

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi Jamie,

Did you compile the source code? Did that result in a flow2d3d.dll being build? Did you copy that following the instructions on the download page? Please follow the links in Bert's post on this page.

Using a service package means that you buy prebuild, tested binaries.

Regards,

Adri
JJ
Jamie Johnstone, modified 8 Years ago.

RE: Execution error

Youngling Posts: 3 Join Date: 1/19/12 Recent Posts
Hi Adri,

I have now got Flow running on my laptop, although I am very new to Delft and am struggling to run the models.

For my project I am trying to model flow in the Camel Estuary, N. Cornwall. I have my bathymetric .xyz file and have constructed the grid and depth file from this in QUICKIN.
My tidal data is a 30 day time series at 1 minute intervals.

What is the best way to construct a .bct file with the time series data?

Currently every time I try to run a trial model with Astronomic or Harmonic data it comes up with various error messages or stops on 'Part VI- Initialisation & checking second part....'
What is the best way to test if the model itself is functioning?

I am not sure if the problem is with my grid parameters and bathymetry, or with the flow input methodology. I have tried following the user manuals but to know success as of yet.

I have attached my .grd and .dep file for you to look at.

Any help you could give me would be very much appreciated.

Thanks again,

Jamie
Adri Mourits, modified 8 Years ago.

RE: Execution error

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi Jamie,

I'm sorry, but I don't help with building a model.

You have the following options:
  • May be by posting questions on this forum, you will get some answers...
  • The FLOW-GUI can guide you through the building phase of the input
  • The tutorial/manual can give more information
  • You can follow a modelling course, see our services.
  • You can have the model being developed by Deltares, again see our services.

Regards,

Adri
EM
Emma McGovern, modified 8 Years ago.

RE: Execution error

Youngling Posts: 3 Join Date: 4/26/12 Recent Posts
Hi Bert,

I am new to Delft3d and Dashboard. I initially downloaded Delft3d free from the open source. Since then, I downloaded and have been trying to build models using Delft Dashboard to simulate tsunamis. I have come across a similar error as stated above while trying to build the model in the same way as the Webinar by Deepak Vatvani, 'Tsunami simulations using Delft Dashboard and Delft3D'. I receive errors in the Dashboard Command windows when I try to save the mdf, fou, and bca etc files when building the model, however if I continue through, the batch file along with all the other files (.mdf, .bca etc) have been produced in my working folder.
I have tried running the batch file from a command prompt, by both dragging and dropping into the command window and by locating the batch flow file manually in cmd.
The following error message has appeared;

'c:\delft3d\w32\flow\bin\\deltares_hydro.exe' is not recognised as an internal or external command, operable program or batch file.

There is no such executable, however, the folder 'c:\delft3d\w32\flow\bin' exists in the original files I downloaded from the open source for Delft3d.

I initially downloaded the free open source Delft3d, and you have suggested above that it must be then compiled by the user, however I downloaded a pre-compiled version from this link; http://oss.deltares.nl/web/opendelft3d/source-code
I was emailed the license file and I followed the set up for Windows.

Would it be possible that the issue is something to do with the fact I am running on a 64-bit system windows machine? I downloaded the 64-bit version of Dashboard, but I 'm not sure if the Delft3d pre-compiled version was a 32-bit system? Or do you know why I can not run the batch file to get the output .dat files?

Is Delft Dashboard able to run and produce results without Delft 3D?

Any help is greatly appreciated!!!
Many thanks in advance,
Emma
Adri Mourits, modified 8 Years ago.

RE: Execution error (Answer)

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi Emma,

"http://oss.deltares.nl/web/opendelft3d/source-code" contains a block named "TEMPORARY EXTRA SERVICE" about obtaining a setup.exe (and a license file). This setup does NOT contain Delft3D-FLOW itself, only Delft3D-menu and the Graphical User Interfaces. To get a working Delft3D-FLOW executable, you have two options:


Dashboard can not perform a calculation when Delft3D-FLOW is not (compiled and) installed.
I don't expect this to be a 32-bit / 64-bit problem.

Regards,

Adri