Cohesive sediments & Muddy systems

Cohesive sediment, or mud, is a mixture of clay particles, silt, (fine) sand, organic material, and water. It preferentially settles in low-energy environments such as sheltered coastlines, estuaries and harbors. Mud deposits give rise to highly bio-diverse, and therefore ecologically valuable systems such as mud flats, mangroves and salt marshes. These ecosystems are not only ecologically important, but also play a role in coastal defenses. At the same time, sedimentation in navigation channels and harbors is an obvious unfavorable aspect. Suspended mud particles influence the water quality reducing light in the water column, leading to reduced photosynthesis or primary production. In extreme cases, high mud suspensions may influence vertical mixing rates, resulting in anoxic conditions and thereby high mortality rates. Toxic contaminant may adhere to mud particles, influencing the fate and residence time of particles.

Delft3D provides a mathematical framework to study all these effects. Computational modules have been implemented to simulate the transport and fate of mud at low and high concentrations, in the form of fluid mud or turbidity currents, or as mixtures with fine sand. An extensive set of post-processing tools allows for analysis of the computational results.




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



Cohesive sediments & Muddy systems


  • LP
    Lucas Pion, modified 1 Year ago.

    Critical bed shear stress for erosion - MAP x Constant Value

    1 Post 1277 Views 0 Answers
  • Eduardo H. Cordeiro Gonçalves replied 2 Years ago.

    Bed Layer in(.inb) file work

    2 Posts 1847 Views 0 Answers
  • AJ
    Alfonso M JR, modified 2 Years ago.

    Sediment Transport Differences

    1 Post 1554 Views 0 Answers
  • AJ
    Alfonso M JR, modified 2 Years ago.

    Filbal Keyword

    1 Post 1298 Views 0 Answers
  • IP
    Irene P replied 2 Years ago.

    Mass balance problem

    3 Posts 2318 Views 0 Answers
  • AH
    Arif Hussain, modified 2 Years ago.

    Clay distribution at bed level in deep-water sandstones

    1 Post 1524 Views
  • SM
    saeed moghimi, modified 2 Years ago.

    Clear up some terms

    1 Post 1581 Views 0 Answers
  • SM
    shaazia mohammed, modified 4 Years ago.

    Sediment dynamics modeling in Delf3D

    1 Post 5109 Views 0 Answers
  • Zhina mohammed replied 2 Years ago.

    Sediment layer thickness in *.mor file vs *.sed file

    12 Posts 11937 Views 0 Answers
  • Kyssyanne Oliveira replied 11 Months ago.

    spatially non-uniform cohesive sediment settling velocity

    3 Posts 7273 Views 1 Answer
  • Arnold van Rooijen, modified 4 Years ago.

    New tutorials on modeling fine sediment transport on Community Wiki!

    1 Post 5510 Views
  • Arnold van Rooijen, modified 4 Years ago.

    Theory on mud / fine sediment processes and modeling

    1 Post 3995 Views
  • JA
    John Anderson, modified 7 Months ago.


    1 Post 513 Views 0 Answers
  • MK
    Manuela König, modified 1 Year ago.

    Sediment transport condition

    1 Post 976 Views 0 Answers
  • MK
    Manuela König, modified 1 Year ago.

    Concentration values - Transport Condition

    1 Post 786 Views 0 Answers
  • Richard Measures replied 1 Year ago.

    Fixed Bed

    2 Posts 1047 Views 0 Answers
  • MK
    Manuela König, modified 1 Year ago.

    General Model Set up Sediment & Formulation

    1 Post 789 Views 0 Answers
  • VG
    V. Marco Gatto, modified 1 Year ago.

    Near-bed & equilibrium concentrations for cohesive fractions in 2D

    1 Post 1145 Views 0 Answers
  • Zhina mohammed replied 1 Year ago.

    Equilibrium concentration of non-cohesive at boundary-Source code

    3 Posts 1748 Views 0 Answers
  • CB
    Claire BERAUD, modified 2 Years ago.

    dry bed density for silt

    1 Post 1519 Views 0 Answers
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