Neumann depth dependant source term for vertical surface

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1

Hi all,

I would like to apply a Neumann boundary condition on a vertical surface. This boundary condition is depth dependant.
How to combine the $DIS_TYPE CONSTANT_NEUMANN and the depth dependency?

Is there something similar for the source term to the keyword $DIS_TYPE GRADIENT for boundary condition?

Thanks a lot in advance.

Best,

Antoine

2

Hi Antoine,

with a POLYLINE, you could use this as a boundary condition:

#BOUNDARY_CONDITION

 $PCS_TYPE

  LIQUID_FLOW

 $PRIMARY_VARIABLE

  PRESSURE1

 $GEO_TYPE

  POLYLINE RIGHT

 $DIS_TYPE

  FUNCTION

  0+-9810*z

I guess, it will also work with SURFACEs, but I don't know if it works for SOURCE_TERMS. Maybe, Wenqing knows, as FUNCTION is his implementation...

Cheers,

Marc
···

On 02.12.2014 12:53, Antoine Jacquey wrote:

Hi all,

    I would like to apply a Neumann boundary condition on a vertical surface. This boundary condition is depth dependant.

    How to combine the $DIS_TYPE CONSTANT_NEUMANN and the depth dependency?



    Is there something similar for the source term to the keyword  $DIS_TYPE GRADIENT for boundary condition?



    Thanks a lot in advance.



    Best,



    Antoine

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3

Hi Marc,

Thanks for your answer.

I also noticed in an old manual pdf file a keyword $LINEAR_NEUMANN.
I’m not sure if this still works but I will give it a try.

Thanks again.

Cheers,
Antoine

4

Hi Antoine,

I guess, LINEAR_NEUMANN is only working with POLYLINES.

I remember, that Norbert Böttcher was trying to use FUNCTIONS with source terms, but I don't know how he solved that. Unfortunately, he is currently not at work - maybe Thomas Nagel has some info...

Marc
···

On 03.12.2014 12:37, Antoine Jacquey wrote:

Hi Marc,

    Thanks for your answer.



    I also noticed in an old manual pdf file a keyword $LINEAR_NEUMANN.

    I'm not sure if this still works but I will give it a try.



    Thanks again.



    Cheers,

    Antoine

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5

Hi,

Would the $DATA_BASE option be a possible way of doing that? With an csv file with the values.
If yes, do you know a bechmark using this keyword so I can check it the convention of the csv file?

Thank yout in advance.