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 1916 Views 0 Answers
  • Eduardo H. Cordeiro Gonçalves replied 2 Years ago.

    Bed Layer in(.inb) file work

    2 Posts 2550 Views 0 Answers
  • AJ
    Alfonso M JR, modified 2 Years ago.

    Sediment Transport Differences

    1 Post 2047 Views 0 Answers
  • AJ
    Alfonso M JR, modified 2 Years ago.

    Filbal Keyword

    1 Post 1755 Views 0 Answers
  • IP
    Irene P replied 2 Years ago.

    Mass balance problem

    3 Posts 3155 Views 0 Answers
  • AH
    Arif Hussain, modified 2 Years ago.

    Clay distribution at bed level in deep-water sandstones

    1 Post 1973 Views
  • SM
    saeed moghimi, modified 2 Years ago.

    Clear up some terms

    1 Post 2068 Views 0 Answers
  • SM
    shaazia mohammed, modified 4 Years ago.

    Sediment dynamics modeling in Delf3D

    1 Post 5875 Views 0 Answers
  • Zhina mohammed replied 2 Years ago.

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

    12 Posts 14098 Views 0 Answers
  • Kyssyanne Oliveira replied 1 Year ago.

    spatially non-uniform cohesive sediment settling velocity

    3 Posts 8074 Views 1 Answer
  • Arnold van Rooijen, modified 5 Years ago.

    New tutorials on modeling fine sediment transport on Community Wiki!

    1 Post 6509 Views
  • Arnold van Rooijen, modified 5 Years ago.

    Theory on mud / fine sediment processes and modeling

    1 Post 4549 Views
  • AA
    Aspen M Anderson replied 26 Days ago.

    ERROR d50 < 0.0001 not allowed

    5 Posts 4723 Views 1 Answer
  • EC
    Estelle Corbel, modified 6 Months ago.

    Very basic sand sedimentation transport TEST pb

    1 Post 372 Views
  • JA
    John Anderson, modified 1 Year ago.


    1 Post 1092 Views 0 Answers
  • MK
    Manuela König, modified 1 Year ago.

    Sediment transport condition

    1 Post 1470 Views 0 Answers
  • MK
    Manuela König, modified 1 Year ago.

    Concentration values - Transport Condition

    1 Post 1226 Views 0 Answers
  • Richard Measures replied 1 Year ago.

    Fixed Bed

    2 Posts 1741 Views 0 Answers
  • MK
    Manuela König, modified 1 Year ago.

    General Model Set up Sediment & Formulation

    1 Post 1248 Views 0 Answers
  • VG
    V. Marco Gatto, modified 2 Years ago.

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

    1 Post 1763 Views 0 Answers
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