| Voulet |
June 28, 2019 07:31 |
remove internal face automaticaly created and which don't have any physical meaning
Hi all.
I'm trying to mesh a canal which contain an little obstacle (area with no mesh) here is a very rough sketch of how I mesh it with 10 blocks :
https://framapic.org/VUUpuO3C7zzv/mrzTwkxUKqR0.png
At the junctions betweens some groups of hex blocks (in purple), blockMesh is generating some faces with are put in a defaultface patch that I don't want: here is a picture of the mesh:
the horizontal red faces are my defaultFace patch ( the vertical red faces are a patch were I'll apply a heating boudary condition)
https://framapic.org/KYsfCTYTkaNd/ZDZy8H1VjiY0.png
Why does blockMesh is doing this ? I've no duplicated nodes (i've checked with gmsh). Can someone give me some advices me to cope with this ? I've heard about stitchMesh and topoSet but i don't see how I can use them to remove theses face from my mesh.
Here is my blockMeshDict:
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.2.1 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
convertToMeters 1;
vertices
(
(0. 0. 0.) //0
(1. 0. 0.) //1
(1. 0. 1.) //2
(0. 0. 1.) //3
(0. 2.5 0.) //4
(1. 2.5 0.) //5
(1. 2.5 1.) //6
(0. 2.5 1.) //7
(0. 7.5 0.) //8
(1. 7.5 0.) //9
(1. 7.5 1.) //10
(0. 7.5 1.) //11
(0. 10. 0.) //12
(1. 10. 0.) //13
(1. 10. 1.) //14
(0. 10. 1.) //15
(0.6 4.5 0.)//16 boite chauffante face bas
(0.75 4.5 0.)//17
(0.75 4.5 1.)//18
(0.6 4.5 1.)//19
(0.6 5.5 0.)//20 boite chauffante haut
(0.75 5.5 0.)//21
(0.75 5.5 1.)//22
(0.6 5.5 1.)//23
(0. 4.5 0.)//24 limite basse boite chauffante pour bloc 2
(1. 4.5 0.)//25
(1. 4.5 1.)//26
(0. 4.5 1.)//27
(0. 5.5 0.)//28 limite haute boite chauffante pour bloc 3 et 4
(1. 5.5 0.)//29
(1. 5.5 1.)//30
(0. 5.5 1.)//31
(0.6 2.5 0.)//32 boite chauffante tout en bas
(0.75 2.5 0.)//33
(0.75 2.5 1.)//34
(0.6 2.5 1.)//35
(0.6 7.5 0.)//36 boite chauffante tout en haut
(0.75 7.5 0.)//37
(0.75 7.5 1.)//38
(0.6 7.5 1.)//39
);
blocks
(
hex (0 1 5 4 3 2 6 7) (20 30 1) simpleGrading (1 1 1)//1
hex (33 5 25 17 34 6 26 18) (5 24 1) simpleGrading (1 1 1)//2
hex (32 33 17 16 35 34 18 19) (3 24 1) simpleGrading (1 1 1)//3
hex (4 32 16 24 7 35 19 27) (12 24 1) simpleGrading (1 1 1)//4
hex (17 25 29 21 18 26 30 22) (5 12 1) simpleGrading (1 1 1)//5
hex (24 16 20 28 27 19 23 31) (12 12 1) simpleGrading (1 1 1)//6
hex (21 29 9 37 22 30 10 38) (5 24 1) simpleGrading (1 1 1)//7
hex (20 21 37 36 23 22 38 39) (3 24 1) simpleGrading (1 1 1)//8
hex (28 20 36 8 31 23 39 11) (12 24 1) simpleGrading (1 1 1)//9
hex (8 9 13 12 11 10 14 15) (20 24 1) simpleGrading (1 1 1)//10
);
edges
(
);
boundary
(
inlet
{
type patch;
faces
(
(0 1 2 3)
);
}
outlet
{
type patch;
faces
(
(14 13 12 15)
);
}
paroiAdiabatique
{
type wall;
faces
(
(7 4 0 3)
(15 12 8 11)
(9 13 14 10)
(29 9 10 30)
(25 29 30 26)
(5 25 26 6)
(1 5 6 2)
(22 18 17 21)
(21 22 23 20)
(16 19 18 17)
);
}
paroiChaude
{
type wall;
faces
(
(11 8 28 31)
(31 28 24 27)
(27 24 4 7)
(20 23 19 16)
);
}
frontAndBack
{
type empty;
faces
(
(6 7 3 2)
(19 27 7 35)
(18 19 35 34)
(26 18 34 6)
(23 31 27 19)
(30 22 18 26)
(39 11 31 23)
(38 39 23 22)
(10 38 22 30)
(14 15 11 10)
(4 5 1 0)
(24 16 32 4)
(16 17 33 32)
(17 25 5 33)
(28 20 16 24)
(21 29 25 17)
(8 36 20 28)
(36 37 21 20)
(37 9 29 21)
(12 13 9 8)
);
}
);
mergePatchPairs
(
);
// ************************************************************************* //
//(6 5 33 34) here and bellow planes corresponding
//(34 33 32 35) to defaultFace
//(35 32 4 7)
//(10 9 37 38)
//(38 37 36 39)
//(39 36 8 11)
//(9 8 11 10)
//(5 4 7 6)
|
