2D and 3D Sediment Transport and Morphological Modelling

New methods for modelling mixed cohesive and non-cohesive sediments in riverine, estuarine and coastal environments.

This webinar explores the requirements and challenges associated with sediment transport and morphological modelling in 2D and 3D hydrodynamic models.

Learn more about sediment transport modelling with 2D and 3D models and see some of the bench marking and applications including river mouth scour and morphology, dredge plume modelling, river bed armouring and sorting and siltation.

Date: Wednesday, 16 December 2020

Time: 1:00pm (Australia/Sydney; find your local time)

Format: Up to 1 hour: 30min presentation + 30min Q&A

Cost: Free

Contact: Joel Voortman

Resources: Webcasts and other documents will be available here

TAGS:  

Presenters:

Mitchell Smith

BMT / TUFLOW

Mitchell is an Associate Principal Engineer at BMT and leads TUFLOW FV’s software development, testing/benchmarking, support and training which most recently has involved delivery of TUFLOW FV’s n... Read more

Ian Teakle

TUFLOW / BMT

Ian is a Principal Engineer within the Brisbane Coastal and Metocean team of BMT. He graduated with an honours degree in Civil Engineering from the University of Queensland in 1999 and was awarded a P... Read more

Details:

Rivers, estuaries and coasts each exhibit widely varied flow and/or wave conditions that influence sediment characteristics and transport rates as a combination of bed and suspended load. As sediment is eroded/scoured, transported and deposited bed morphological changes can result in feedback loops that influence flow behaviour. Some of these transport behaviours can be well represented with 2D models, others benefit from a 3D approach.

When compared to hydraulic or hydrodynamic modelling in isolation, the addition of sediment transport modelling can be a little daunting. Additional data requirements and techniques are required for model setup, simulation and model verification and these needs vary with environment and project application.

TUFLOW’s sediment transport module is a multiple fraction (mixed cohesive, non-cohesive, i.e. sands silts, clays and muds in the one model), multi-bed-layer sediment transport and coupled hydrodynamic-morphological model. It has been used extensively for the simulation of sediment transport in creeks, rivers, estuaries, coastal and ocean environments allowing:

  • Sediment transport due to currents and/or wave driven processes
  • Morphological evolution and feedback on hydrodynamics
  • Multiple sediment fractions, including mixed cohesive and non-cohesive sediments (sands silts, clays and muds in the one model)
  • Sediment exchange between the water column and seabed (deposition and erosion)
  • Advection and diffusion of suspended sediment (2D or 3D)
  • Flocculation and hindered settling
  • Bed layer consolidation
  • Bed load transport, bed slumping and armouring processes
  • For 3D baroclinic simulations sediment can be taken into consideration to influence density.

The implementation of our sediment transport module allows the user a high level of control over sediment characteristics. Within a single model run, sediment fraction groups can be assigned as cohesive or non-cohesive. There is also the added flexibility of selecting a range of common sediment transport models/equations independently for each fraction.

Sponsored by:

TUFLOW