[decaf]

Hello
I am trying to create in block mesh a t juntion using two cylinders. I managed to run blockmesh without a problem but when i run the the code it complains that
FOAM FATAL ERROR:

Number of poly-patches = 4 in blockMeshDict, are not equal to the number of patch models = 3, de$

if you look at my blockmesh and my drawing(http://imgur.com/a/83nhB), i already know i made a patch called mergewall and a masterpatch and these are not defined in the boundarydict because there is nothing to define. a part of the wall merge wall should merge with the masterpatch and it should create an internal boundary that i dont have to define.
I don't know how to do this. I have seen some related posts but so far couldn't do it. thanks for any help and i ll post a solution if i figure it out.


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

convertToMeters 1e-2;
vertices
(
( 0.100000 -0.100000 0.000000)
( -0.100000 -0.100000 0.000000)
( -0.100000 0.100000 0.000000)
( 0.100000 0.100000 0.000000)
( 0.141421 -0.141421 0.000000)
( -0.141421 -0.141421 0.000000)
( -0.141421 0.141421 0.000000)
( 0.141421 0.141421 0.000000)
( 0.100000 -0.100000 1.000000)
( -0.100000 -0.100000 1.000000)
( -0.100000 0.100000 1.000000)
( 0.100000 0.100000 1.000000)
( 0.141421 -0.141421 1.000000)
( -0.141421 -0.141421 1.000000)
( -0.141421 0.141421 1.000000)
( 0.141421 0.141421 1.000000)

( 0.050000 -0.183333 0.450000)
( -0.050000 -0.183333 0.450000)
( -0.050000 -0.183333 0.550000)
( 0.050000 -0.183333 0.550000)
( 0.070711 -0.183333 0.429289)
( -0.070711 -0.183333 0.429289)
( -0.070711 -0.183333 0.570711)
( 0.070711 -0.183333 0.570711)
( 0.050000 -1.183333 0.450000)
( -0.050000 -1.183333 0.450000)
( -0.050000 -1.183333 0.550000)
( 0.050000 -1.183333 0.550000)
( 0.070711 -1.183333 0.429289)
( -0.070711 -1.183333 0.429289)
( -0.070711 -1.183333 0.570711)
( 0.070711 -1.183333 0.570711)

);
blocks
(
//block0
hex (1 0 3 2 9 8 11 10)
square
(5 5 50)
simpleGrading (1 1 1)

//block1
hex (0 4 7 3 8 12 15 11)
innerCircle
(5 5 50)
simpleGrading (1 1 1)

//block2
hex (3 7 6 2 11 15 14 10)
innerCircle
(5 5 50)
simpleGrading (1 1 1)

//block3
hex (2 6 5 1 10 14 13 9)
innerCircle
(5 5 50)
simpleGrading (1 1 1)

//block4
hex (1 5 4 0 9 13 12 8)
innerCircle
(5 5 50)
simpleGrading (1 1 1)

//block5
hex ( 17 16 19 18 25 24 27 26 )
square
(5 5 10)
simpleGrading (1 1 1)

//block5
hex ( 16 20 23 19 24 28 31 27 )
innerCircle
(5 5 10)
simpleGrading (1 1 1)

//block7
hex ( 19 23 22 18 27 31 30 26 )
innerCircle
(5 5 10)
simpleGrading (1 1 1)

//block8
hex ( 18 22 21 17 26 30 29 25 )
innerCircle
(5 5 10)
simpleGrading (1 1 1)

//block9
hex ( 17 21 20 16 25 29 28 24 )
innerCircle
(5 5 10)
simpleGrading (1 1 1)

);
edges
(

arc 7 4 ( 0.200000 0.000000 0.000000)
arc 4 5 ( 0.000000 -0.200000 0.000000)
arc 5 6 ( -0.200000 0.000000 0.000000)
arc 6 7 ( 0.000000 0.200000 0.000000)
arc 15 12 ( 0.200000 0.000000 1.000000)
arc 12 13 ( 0.000000 -0.200000 1.000000)
arc 13 14 ( -0.200000 0.000000 1.000000)
arc 14 15 ( 0.000000 0.200000 1.000000)
arc 3 0 ( 0.110000 0.000000 0.000000)
arc 0 1 ( 0.000000 -0.110000 0.000000)
arc 1 2 ( -0.110000 0.000000 0.000000)
arc 2 3 ( 0.000000 0.110000 0.000000)
arc 11 8 ( 0.110000 0.000000 1.000000)
arc 8 9 ( 0.000000 -0.110000 1.000000)
arc 9 10 ( -0.110000 0.000000 1.000000)
arc 10 11 ( 0.000000 0.110000 1.000000)

arc 23 20 ( 0.100000 -0.183333 0.500000)
arc 20 21 ( 0.000000 -0.183333 0.400000)
arc 21 22 ( -0.100000 -0.183333 0.500000)
arc 22 23 ( 0.000000 -0.183333 0.600000)
arc 31 28 ( 0.100000 -1.183333 0.500000)
arc 28 29 ( 0.000000 -1.183333 0.400000)
arc 29 30 ( -0.100000 -1.183333 0.500000)
arc 30 31 ( 0.000000 -1.183333 0.600000)
arc 19 16 ( 0.060000 -0.183333 0.500000)
arc 16 17 ( 0.000000 -0.183333 0.440000)
arc 17 18 ( -0.060000 -0.183333 0.500000)
arc 18 19 ( 0.000000 -0.183333 0.560000)
arc 27 24 ( 0.060000 -1.183333 0.500000)
arc 24 25 ( 0.000000 -1.183333 0.440000)
arc 25 26 ( -0.060000 -1.183333 0.500000)
arc 26 27 ( 0.000000 -1.183333 0.560000)

);
patches
(
wall
walls
(
(3 0 1 2)
(3 7 4 0)
(2 6 7 3)
(1 5 6 2)
(0 4 5 1)

(4 7 15 12)
(6 5 13 14)
(7 6 14 15)

( 20 23 31 28 )
( 21 20 28 29 )
( 22 21 29 30 )
( 23 22 30 31 )

)

patch
inlet
(
( 27 26 25 24 )
( 27 24 28 31 )
( 26 27 31 30 )
( 25 26 30 29 )
( 24 25 29 28 )
)

patch
outlet
(
(11 10 9 8)
(11 8 12 15)
(10 11 15 14)
(9 10 14 13)
(8 9 13 12)
)
patch
masterPatch
(
( 19 16 17 18 )
( 19 23 20 16 )
( 18 22 23 19 )
( 17 21 22 18 )
( 16 20 21 17 )
)
wall
mergewall
(
(5 4 12 13)
)

);

mergePatchPairs
(
(masterPatch mergewall)
);


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

[decaf]

I was able to run the code however it quits quickly after. Here is what i did to be able run it :
(maybe the solution i am looking for is somewhere here
Remove internal patch(es))

i run the command blockMesh then
i run the command stitchMesh masterPatch slavePatch
this creates a 2e-06 folder with polymesh folder inside
same structure as the one in constant folder but there is no blockMeshDict
so i replace the files in constant with these
cp ../../2e-06/polyMesh/* .
and i do the following changes in the boundary file
i correct the folder location to constant/polyMesh instead of 2e-06/polyMesh
then i correct the number of patches from 5 to 4
then i remove the masterZone which has 0 faces

then i go back and run the usual ./Allrun command with the blockMesh command removed

so the code starts to run but there is this error in the log file

--> FOAM FATAL ERROR:
No base point for face 23517, 4(7652 7653 7658 7657), produces a decomposition that has a minimum volume greater than tolerance.

[decaf]

The solution is forget about blockmesh.
I am using os X so what i ended up doing is :
i installed autocad which has some free acadamic version to make geometries and i created easily using only line, polyline, rectangle circle and sweep, merge commands complicated geometries i needed.
then i used inventor fusion, again free, and installable on os X to convert a file to step file.

then i installed virtualbox to install ubuntu to install salome
there is this really nice video that describes hot to mesh starting from a step file

https://www.youtube.com/watch?v=1zQbU-E4k1U

salome runs absolutely fine on my laptop and i easily created the mesh

one little thing i had to was to scale my geometry because for some reason i started in mm ended up in cm but scaling is trivial in salome.

then as described in the video convert the mesh to files for openfoam using ideasUnvToFoam yourfile.unv

i also did checkMesh which came out all ok but checkmesh -allgeometry gave 2 fails maybe its just a warning.

the code (dsmcFoamPlus) runs fine, now i need to see if it makes any sense physicswise.


my gemorty is not a t juntion anymore since i can do any geometry i want : )
http://imgur.com/a/BINKZ