intro story DELWAQ


DELWAQ is the engine of the D-Water Quality and D-Ecology programmes of the Delft3D suite. It is based on a rich library from which relevant substances and processes can be selected to quickly put water and sediment quality models together.

The processes library covers many aspects of water quality and ecology, from basic tracers, dissolved oxygen, nutrients, organic matter, inorganic suspended matter, heavy metals, bacteria and organic micro-pollutants, to complex algae and macrophyte dynamics. High performance solvers enable the simulation of long periods, often required to capture the full cycles of the processes being modelled.

The finite volume approach underlying DELWAQ allows it to be coupled to both the structured grid hydrodynamics of the current Delft3D-FLOW engine and the upcoming D-Flow Flexible Mesh engine (1D-2D-3D) of the Delft3D Flexible Mesh Suite (or even other models such as TELEMAC).

'DELWAQ in open source' is our invitation to all leading experts to collaborate in further development and research in the field of water quality, ecology and morphology using Delft3D. Feel free to post your DELWAQ related questions or comments in this dedicated forum space. If you are new to DELWAQ, the tutorial (in the user manual) is a good place to start. A list of DELWAQ related publications is available here.




Sub groups
D-Flow Flexible Mesh

Cohesive sediments & muddy systems


Message Boards


  • 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
    0 Subcategories 2 Threads
  • 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, 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
    0 Subcategories 0 Threads
  • Teodósio Nzualo

    Dear, My name is Teodósio Nzualo and i'm a pos-doc research in Federal University of Rio de Janeiro. I user the Delft3D since 2010 in free version. In March 1, 2016 i received from Deltares the last License which i'm using. However in March 18, my QUICKPLOT left to work. The mensage that i received is "Error in mclFreeStackTrace". What could it be? Is it a error of compiler R2013? and how to resolve it? I'm using the Delft3D in version 1 - MCR_R2013b_win32_installer 2 - vcredist_x86 (2010 SP1) 3 - delft3d_tutorial_x86 4 - delft3d_binaries_x86 5 - DS_Flex Specifications of my PC Processor: Intel(R)Core(TM) i7 CPU 2.93 GHz Memory RAM: 6.00 GB System type: 64-bit Operating System, x64-based processor And i'm using a Windows 10 Thanks for your attention. Teodósio Nzualo
    0 Subcategories 0 Threads
  • Version and Compiling

    I am trying to use Delft3d version 4.01.01.rc.03. I want to know, for this version of Delft3d, which flow tag should I use? Similarly, if I want to use Delft3d version 4.02.02, which flow tag version should I use. And what is the flow tag version that i should use for Delft3d version 4.00.02? I am trying to compile the source code since last week but there is always some errors and problems. I am using Microsoft visual studio 2010 and intel parallel studio XE 2015. Is there any way i can run Delft3d for simulation without compiling the source code? I would be very much thankful for your support.
    0 Subcategories 1 Thread
  • What is cash app customer service

    For cash app users who want to get cash app customer service, if they are facing issues in their cash app account can contact you anytime. Dial at the cash app helpline number and get the proper solution from us. Apart from this, users can go with the cash.app/ help or Cash app customer service or customer support option. https://www.mailsupportcontact.com/phone-number/cash-app
    0 Subcategories 0 Threads