CFD Online Discussion Forums - [mesh manipulation] Creating porous baffle

Dear all!

I'm slowly getting to know a little more of OpenFOAM, but there is just SO much^^

I'm still trying to understand how to best simulate a dam break at a lake, a bit similar to this question (https://www.cfd-online.com/Forums/op...technique.html). There, I got the idea of creating the dam as a baffle which then gets more and more porous until it is completely "gone" (I hope something like that's possible). Or can I create a baffle which does dome kind of solidMotion into the ground?

I want to show you what I've done so far and I would then like for someone to tell me if I'm on the right track at all.

The OpenFoam user guide says that a searchablePlate can be used to create a baffle. I've created the plate using snappyHexMeshDict:

Code:

geometry

{

    [...]

    dam

    {

        type            searchablePlate;

        origin          (4000 3463 4582);

        span            (300 0 90);

     }

}



refinementSurfaces

    {

        dam

        {

            level (6 6);

            patchInfo

            {

            type searchablePlate;

            }

        }

      }

and it looks promising: https://ibb.co/VHGbrNt
https://ibb.co/VHGbrNt https://drive.google.com/file/d/1o13...usp=drive_link
To create a faceZone, I then used topoSetDict like this:

Code:

actions

(

    {

        name    dam;

        type      faceZoneSet;

        action    new;

        origin    (4000 3463 4582);

        span      (300 0 90);



        source    searchableSurfaceToFaceZone;

        surfaceType    searchablePlate;

        surfaceName    dam;

    }

);

In an older Youtube tutorial, the createBafflesDict looked like this:

Code:

baffles

{

    dam

    {

        type    faceZone;

        zoneName    dam;

        flip    false;

        patches

        {

            master

            {

                name    dam;

                type    wall;

            }

            slave { ${..master} }

        }

     }

 }

But when I run createBaffles, it gives me an error because I didn't include patchField entries for dam in the files in 0 (like U, alpha.water etc.). What would be the correct way to include my dam baffle there?

Can any of this lead to me simulating a dam breach?^^

Thank you all!