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

problem with online Delft3D-WAVE

U
davood shariat, modified 5 Years ago.

problem with online Delft3D-WAVE

hi
I am building a model to study the beach , around the breakwater can be.
In the first model , the calibration of hydrodynamic effects are considered .
To build the module FLOW , I used only the tide of open boundaries.
Type of open boundary:WATER LEVEL
Forcing type: ASTRONOMIC
This module is a single run. But when I use of wave and online DELFT3D-WAVE . model error.
This message is
“”“file is not available.
Cannot read the time points of the hydrodynamic FLOW results!!!”””
Who can advise me on this issue and The reason to say Until this problem is resolved.
Thank you
GR
Gabriel Ruiz, modified 5 Years ago.

RE: problem with online Delft3D-WAVE

Padawan Posts: 59 Join Date: 9/30/11 Recent Posts
Hi davood,

Could you share your mdf file of your simulation? In order to check it.

Regards

Gabriel
U
davood shariat, modified 5 Years ago.

RE: problem with online Delft3D-WAVE

hi Gabriel
I am still faced with the problem are
Is it possible for you to send my files via email
e-mail:davood5a5@yahoo.com
Regards
U
davood shariat, modified 5 Years ago.

RE: problem with online Delft3D-WAVE

I've built a model that is attached to the file. But when I run the model would be an error. What is the reason for this error?
It should be noted that the flow module to change boundary conditions are run, but if it's coupled wave module I get the following error is encountered.

“file is not available.
Cannot read the time points of the hydrodynamic FLOW results!::

I'm really confused.If possible, give the reason for the problem and its solution

Attachments:

Adri Mourits, modified 5 Years ago.

RE: problem with online Delft3D-WAVE

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

A zip file is attached to this post with your model input, with the following changes:
1. tt.bct: correct start/end time
2. 55555.wnd: correct start/end time
3. flow3.mdf: Timestep decreased with a factor 100

With these changes, the model runs. Some remarks:
1. When using the GUI to create a model, the GUI should help you with the correct times to be used in input files.
2. Some process in the model forces the need of a very small time step. Even a timestep of 0.01 minute is on the edge with respect to the Courant number (check the messages in the tri-diag file). By analysing the results you should be able to find out what process causes this and whether this is on purpose or not.

Regards,

Adri
U
davood shariat, modified 5 Years ago.

RE: problem with online Delft3D-WAVE

hi adri
Thank you for your reply
regards
U
davood shariat, modified 5 Years ago.

RE: problem with online Delft3D-WAVE

Hi Adri
The reforms carried out in the module Flovv THANK YOU
But I still can not wave module coupled with my Flovv
I encounter the following error message make any wave model
What is the reason?
What should I do to fix this?
Qinghua Ye, modified 5 Years ago.

RE: problem with online Delft3D-WAVE

Jedi Council Member Posts: 612 Join Date: 3/2/11 Recent Posts
Hi Davood,

The error says the wave3.mdf is not found. You don’t have a wave3.mdf in your folder as well, the mdf I saw there is a flow3.mdf.

Is it helpful?

Regards,

Qinghua