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

Defining Neuman BC based on offshore forcing

HR
hani ramadhan, modified 1 Year ago.

Defining Neuman BC based on offshore forcing

Youngling Posts: 6 Join Date: 3/31/13 Recent Posts

Dear everyone,

I want to simulate tidal propagation at my domain that has three open boundaries. I want to use water level boundary for north boundary and Neumann BC for the west and east boundary. But I don't know how to specify the gradient of waterlevel. I have tried to set the gradient time series as 0, but in cophase plot, it doesn't show propagation. Would you please give some advice and may be the example of calculation Neumann BC based on offshore forcing. Thanks a lot.

VM
Vahid Mohammadian, modified 1 Year ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 5 Join Date: 1/29/16 Recent Posts

Hi Hani,

Did you find a solution how to define Neumann BC correctly? I have almost a similar issue.

Thanks,

Vahid

JS
JAZIA SATYRA, modified 8 Months ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 18 Join Date: 11/9/19 Recent Posts
 I have tried to set the gradient tim xender discord omegle]eries as 0, but in cophase plot, it doesn't show propagation. Would you please give some advice and may be the example of calculation Neumann BC based on offshore forcing. Thanks a lot.
IM
ios man, modified 5 Months ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 5 Join Date: 10/15/19 Recent Posts
hani ramadhan:

<p>Dear everyone,</p>
<p>I want to simulate tidal propagation at my domain that has three open
boundaries. I want to use water level boundary for north boundary and
Neumann BC for the west and east boundary. But I don't know how to
specify the gradient of waterlevel. I have tried to set the gradient
time series as 0, but in cophase plot, it doesn't show propagation.
Would you please give some advice and may be the example of
calculation Neumann BC based on offshore forcing. Thanks a lot.</p>

thanks my issue has been fixed.
OS
offpage seo70, modified 3 Months ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 1 Join Date: 3/10/20 Recent Posts
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Bruck Howell, modified 3 Months ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 1 Join Date: 3/11/20 Recent Posts
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Andrew Piana, modified 27 Days ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 4 Join Date: 6/10/20 Recent Posts
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william smith, modified 2 Months ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 1 Join Date: 4/24/20 Recent Posts
The physical processes on Earth create constant change. These processes—including movement in the tectonic plates in the crust, wind and water erosion, and deposition—shape features on Earth’s surface.
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rishi r, modified 1 Month ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 8 Join Date: 1/8/20 Recent Posts
 Can’t wait for your next post. Really interesting to read. Great Job!
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Alfred Williams, modified 1 Month ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 1 Join Date: 3/5/20 Recent Posts
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Hannah Parker, modified 1 Month ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 5 Join Date: 5/15/20 Recent Posts
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Apk Doz, modified 15 Days ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 2 Join Date: 6/14/20 Recent Posts
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yi soo, modified 9 Days ago.

RE: Defining Neuman BC based on offshore forcing

Youngling Posts: 2 Join Date: 3/12/20 Recent Posts
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