[cutmountain]

Hello everybody,

I am having problems with mergeMeshes.

For my studies, I need to make a lot of simualtions of a bluff body with different angles of attack so the idea was:
- mesh the wind tunnel with a spheric hole (with snappy)
- mesh a sphere with the bluff body in it (with snappy)
- rotate the mesh of the sphere of the angle that I need
- merge the meshes and running the simulation

That idea was for avoiding to mesh each time for each angle of attack.

The problem is that when I am going to merge the Meshes in the boundary files there is the pathc of the sphere (with a non zero number of faces), but I don't want it because it is supposed to be part of the internal mesh.

How can I add this patch to the internal mesh?

Thanks in advance to everybody,

Edoardo.

[cutmountain]

I have tried with mergeMeshes and then with stitchMeshes but when I do the stitch mesh -perfect gives me an error about the merging tolerances; if I use -partial it remains stuck and don't do anything.

The things is that the two patches don't fit perfectly because they have small differences in face numbers for the two different way of meshing those surfaces.

So my question is: is the one that I had described above in the previous post the right approach or not? Maybe is possible to separate the two meshes after had meshed all together because in that way the surfaces will be identically?

Hope that somebody could help me.

Edoardo.

[Antimony]

Hi,

You can try and define the patch that is common as cyclicAMI with transformation noOrdering

Hope this helps

Cheers,
Antimony

[cutmountain]

I'll try in that way and I will let you know.

Thanks for replying.

[cutmountain]

Hi Antimony,

thanks for your suggestion, it worked!!

Edoardo.

[cutmountain]

Hello everybody,

I am working on a simplyfied test case for a moving flap.

I have a stationary zone and a rotating zone and all of the mesh and the simulation seems to works well.

The problem it that watching at the tke seems like that the two zones (stationary and rotating) are not talking each others.

Looking at the velocity fields, epsilon and nut and p the two zones are talking each others but not tke.

Is something that is needed to be activated or something that I am missing?

I add two screen of two different time step on a plane cutting the rotating part for k and U and my BCs for k.


Thanks in advance as always,

Edoardo.

[cutmountain]

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  4.0                                   |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       volScalarField;
    object      k;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions      [0 2 -2 0 0 0 0];

internalField   uniform 0.01;

boundaryField
{
    "rotor|stator"
    {
        type            kqRWallFunction;
        value           $internalField;
    }

    inlet 
    {
        type            fixedValue;
        value           uniform 0.01;
    }

    outlet
    {
        type            zeroGradient;
    }

    "AMI.*"
    {
        type            cyclicAMI;
        value           $internalField;
    }
    defaultFaces
    {
        type            slip;
    }

}

// ************************************************************************* //

[cutmountain]

sorry I put my last two messages into the wrong thread.

I opened a new thread.