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

 

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    Problems on the creation of the .bct
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  • refine grid

    Hello: I want to refine grid like this(hand drawing is roughe): [img]https://lh3.googleusercontent.com/xh6SjhjAQecoNWCsziTtoMMAAXocpUGAp5_Lic9NZ4fC99XEdjm5aTXh4BvVO4i0bH6Wl3DqSOFQeOTh81lbGHnJeYoro7xEH0tKALhkFmKNoPT2oHV9js7_osgd4Go0xL3Gt2zzpNTavCTaz_tXdyKttCpL7oFyOYiR4BDzqOWIBZ5Lt5MgPHlB7YahXNJHH2PZ-MmwsaOVfIrg_gcIWNa71RfRKbpoD4z2is2TgcwCdQ6aQySsKS2dZyPjGg9RFCSX1ctgDUXOJBTLQuMITVbIpbypsJqtMWQrC1lIK_jYLZ9S_J3hwGr8aiqDSRvn23YZu4UmyS8S8nWhcbTQIFGCXtDw9c9euo1-1JJ6Z3J0tzYtrtLZMHjX3KKLO4dOKz4czsgoto4ZBg7LBRRQ4LmU7hzam1eqDVpEje9cPGQUADUvl-rSRJTswjYOQ5XdZGQVTIJRrVITHs8YIPgBzFP5MyOIF2lfApU6738VGXalsIS9YI6F2xcvwaiCn0QwpPbmEYwU1UC1bOLoARgtL0u1-tCBNJqRTk0krRXFClYDPjIjiGX1JkLTJ0VAAm2JANudl7J8ikrHiBxAriLrsKKzv2Fo3d3O6wDpZ3vUgzeVyvee=w592-h400-no[/img] I have tried to paste two grids but does not work. I also tried to draw an irregular grid,but it could not be saved into .grd [img]https://lh3.googleusercontent.com/LZoRzBoP7r6qg9SLILB3simzXgGBaECI9ezzujKvcd9SWyZ4jupv7qllZT8Mo1MoHdkqA-8PMXBlIAp-asoM4Yu1uLkr5YJEYaVhk7vMoBbh92r_yQX2OQYyKJgEusdP-6s7PAbS6uvtkhbWO1p9iyJOceeikUOG6rwU7XTY8kWranOdAk92T0b0C18E-l8XkjDKBmRs6UrgqTiv14hl-iu9_ekl3fB8MKOvWYsaE0CP9KeEIP7UuXyRolMEs817H9nyBseHfELo1Ko2l7HhAsffm9jvxzC3bQXgB3LvlzK4dmt9DiqchrWEE2vWFQzV2GXfNnjd-Btokc-MgA7bSATuCxXVZ_tVCKo-tJf5PAGMhupB-HJTrlhZpE1xoVuCWUsSP2sqlFYA44Gf5MeXpEKsUWayygYQf_Xi8wvCcOovRLBXY2McSvfFNxMhE3dg0JfJq685BKpFt1HROG8uHmIdT_wWFa_5Bb992pCq2SL-yXiZn_kdatTlJs5rsTgnNLpycFOmypCKSMsxuDjbOrGzRa5Kps9K_oJ_1snm9A8jJ0tnILt3H7dZfujih2kcE4DVKTdhigIi8sr8500avia1vBCLkQdbOOiswIvMJcGqI87x=w762-h730-no[/img] Will you have another way or point out my mistakes,please. thanks
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  • shild18

    the number of the layers is 100 at most. when i make the number of the layers exceed 100, such as 150, it will apears error, so how can i solve it, the following is the error: ******************************************************************************** *** *** Deltares, FLOW2D3D Version 6.02.13.62541M, Nov 6 2018, 12:53:18 *** built from : https://svn.oss.deltares.nl/repos/delft3d/branches/releases/7545 *** *** runid : JLR_YZR_steady *** date,time : 2019-08-31, 23:08:53 *** ******************************************************************************** *** ERROR Number of layers too large. Contact Deltares *** End of tdatom for model: JLR_YZR_steady *** *** 2019-08-31 23:08:53
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