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! 


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: 

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





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


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Attitude plays an important role. Wrong attitude is a real disability

priya impex, modified 1 Month ago.

Attitude plays an important role. Wrong attitude is a real disability

Jedi Knight Posts: 247 Join Date: 10/15/20 Recent Posts
Attitude plays an important role. Wrong attitude is a real disability.A little girl always walks down from her school to home. One day, the weather was not promising. At the time of her return, thunderstorm and lightning strike. Her mother was worried, that her daughter might be frightened .She drove her car on the same route to get her. What she saw, whenever thunderstorm and lightning strike. A little girl stops, look up and smile.Mom: “Why are you stopping?”Little girl: “Mom, God is busy in taking my pictures, I am trying to look pretty”This is ATTITUDE!!!We all need to bring change but should not stop at bringing change, it’s a temporary shift. For eg: Put a glass of water in refrigerator, it will become ice after some time. Keep it again outside refrigerator, it will gain its original form.We need to transform ourselves, A Permanent shift. For eg: A caterpillar decides to turns out to be beautiful butterfly, process called metamorphosis.But do all caterpillars turns to butterfly, No, lot more die in the middle. Like, we humans try to transform ourselves but give up in the middle or at the verge of completion but those who don’t, live their lives to the fullest.Remember, in the path of excellence if you have ego and anger at your end, you do not need an opponent.  It’s high time to move from “can-do-attitude” to “I am doing reality”. Don’t doubt yourself, doubt create mountains. Have faith, faith tunnels through those mountains. Work with all teammates to inculcate right culture in the team. We need people around us to develop ourselves. There is famous saying by, Pastor Martin Niemoller (He was a German and Anti-Nazi):“First they came for Jew, I did not speak as I was not a Jew, then they came for Trade Unionist, I did not speak as I was not a Trade Unionist, then they came for Communist, I did not speak out as I was not a Communist, then they came for Catholic, I did not speak as I was not a Protestant, then they came for me and no one left to save me”.It’s always team wins or team fails, not individual. Can Indian team win a match if we have 11 Sachin Tendulkar in a team? No, we need different competencies to make it high performing team.When I hear all these, I get motivated. Motivation is good if we do something with it otherwise that energy will disappear. It’s like a helium balloon, you set it free, and it will reach to its destination. If you keep it in room, it will deflate and will crumple to the floor. When we get motivated, we get excited and uncomfortable at the same time. We become more cautious and don’t take actions. Voice of inactions turns to voice of Excuse. There are 4 Voice of Excuses. Coaching agile transitions