intro story Lake

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.

 

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


 

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How to switch off the advection terms in the Delft3D momentum equation?

GW
Guoxiang Wu, modified 6 Years ago.

How to switch off the advection terms in the Delft3D momentum equation?

Youngling Posts: 16 Join Date: 8/20/11 Recent Posts
Hi all,

I want to turn off the horizontal advection terms, to see the effects of nonlinear advection in the generation of tide asymmetry. I checked the code, and target the subroutines 'mom_cyclic' and 'mom_cw', which are called by subroutine 'uzd' and 'sud' in serial, respectively, in each half-timestep of the ADI scheme. Advection terms is calculated there and can be output. But when solving the momentum equations, the code for advection terms are not so clear and straightfoward. Does anybody know to switch off this term? Any suggestions are welcome!

Guoxiang
GW
Guoxiang Wu, modified 6 Years ago.

RE: How to switch off the advection terms in the Delft3D momentum equation?

Youngling Posts: 16 Join Date: 8/20/11 Recent Posts
the code is so sophisticated. Does anybody know where can I get the descriptions of variables?

Any response?