Function object to extract overtopping rate - how to use it?
 

Hi All:

I notice that waves2Foam has a runtime function object to extract overtopping rate, anybody has used this function object? It seems that I should define a face zone where the overtopping rate across it can be extracted?

Yes, it has been used to evaluate the overtopping in our paper Jensen, Jacobsen and Christensen (2014); more details can be found on the wiki.

Yes, you need to define a faceSet or faceZone (please check the source) and it comes with some strict naming conventions. You should be able to check that in the source code, as I do not have access to it right now. Naming convention is chosen for easy evaluation of multiple sets/zones.

Kind regards,

Niels

Hi Niels,

I am working on the overtopping too and recently I got a problem of naming the faceZone. It will be very helpful if you can provide me an example of overtoppingDict. Thanks a lot!

Hallo William,

In controlDict you add in functions:

Code:

---

    overtopping0
    {
        type overtopping;
        functionObjectLibs ( "libporosityModule.so" );

        outputControl  timeStep; // Alternative: outputTime
        outputInterval  1;
    }

---

And then you create a corresponding faceZone with the same name, e.g. overtopping0. This you can do with topoSet. In topoSetDict in order to create a faceSet:

Code:

---

        name    overtopping0;
        type    faceSet;
        action  new;
        source  boxToFace;
        sourceInfo
        {
                box  (105.8 14.04 0) (106.2 35 0.2);
        }

---

And then convert this to a faceZone by:

Code:

---

        setsToZones -noFlipMap

---

Kind regards,

Niels

P.S. Thanks to Bjarne Jensen for the example.

How to read Overtopping output
 

Hello Niels and others,


Can you tell me how to read the overtopping output?. As I know the overtopping.dat contains a 3 component vector with an instantaneous overtopping volume, but I don't understand the meaning of this three vector component.


Can anyone give me some tips about this.


Thank you,