intro story Lake


Lakes and reservoirs are important resources for communities around the globe. They provide food, drinking and irrigation water and can also offer spots for recreation. Under certain conditions lakes can also represent a threat for local communities, such as flooding or limnic eruptions. The ecological state of shallow lakes may be hampered by suspended sediments due to wind driven currents and waves. In deep lakes, stratification can cause undesirable anoxic conditions in the deeper areas. Understanding these systems is crucial to enable a sound management of these water bodies.

Delft3D is the state-of-the-art modelling framework for hydrodynamics, water quality, ecology, waves and morphology.
Here, in this space, we share knowledge & experiences, and discuss issues related to modelling of lakes.






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


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How bed shear stress affects the results and what paramters are affected?

Amaal Fathy, modified 1 Month ago.

How bed shear stress affects the results and what paramters are affected?

Youngling Posts: 11 Join Date: 3/26/16 Recent Posts
I'm modelling a lake for 1 year, I'm trying to import the bed shear stress file as a segment function (.tau) but the file is too large and takes too long and yet never imported. It seems that it'll never be imported, the question is, how that will affect the results?
The parameters I use in the model are: DO, BOD, COD, Nitrates, Ammonia, Po4, IM, some Heavy metals, phytoplankton and bacteria.