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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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D-Flow Flexible Mesh
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Cohesive sediments & muddy systems


 

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Outflow boundaries in one reservoir. Doubts with the outflow definition

RR
Ricardo Roman-Botero, modified 2 Years ago.

Outflow boundaries in one reservoir. Doubts with the outflow definition

Youngling Posts: 5 Join Date: 8/2/17 Recent Posts

Hi

I want to simulate the thermal structure of a very simple reservoir which has one flow input and one output. I am working with z-layer model. I also want to know the behavior of some tracers. The outflow Is located in the dam wall near the bottom. For me it is very important to know the temperature in the outlet and, also, the tracer concentration. As I can understand there are two options which I can use to define the outflows, but I have some doubts. The options are:

1. Using the option “Operation-Discharge”, defining a negative discharge and a location near the bottom ( K = 1 or 2, etc.).
2. Defining a Boundary, by setting up “Discharge per Cell” –> “Time series” -> “Per layer specified” -> and then I define the negative discharge in the specific layer (K).


- In both cases, however, (if I understood) I must define the outflow temperature and the tracer concentration too, but this is basically part of I want to know. If I define one value, I think D3D is going to use it as a Dirichlet condition but I don’t want to impose the concentration and the temperature, so what am I missing here? how should I proceed?  

- which is the much better option to define the outflow, the option “a” or “b”?

Thank you in advance

Ricardo RB

 

WP
Witty Pelican, modified 12 Months ago.

RE: Outflow boundaries in one reservoir. Doubts with the outflow definition

Youngling Posts: 1 Join Date: 4/17/20 Recent Posts
the questions myself too, no experiences? 

Walgreenslistens
JO
Jennings Orozco, modified 11 Months ago.

RE: Outflow boundaries in one reservoir. Doubts with the outflow definition

Youngling Posts: 1 Join Date: 5/18/20 Recent Posts
What made you want to look up outflow? mysubwaycard Include any comments and questions you have about this word.
BM
bend mith, modified 9 Months ago.

RE: Outflow boundaries in one reservoir. Doubts with the outflow definition

Youngling Posts: 1 Join Date: 6/26/20 Recent Posts
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