[ssa_cfd]

Hi all,

I want to do a simulation of flow through pipe. I created the cylinder using blockMesh. The mesh looks different. I need an axisymmetric mesh. How to achieve this using openfoam.??

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  4.x                                   |
|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    object      blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

convertToMeters 1;

vertices
(
    (0.25 0 0) //0
    (0 0.25 0) //1
    (-0.25 0 0) //2
    (0 -0.25 0) //3
    
     (0.25 0 1) //4
    (0 0.25 1) //5
    (-0.25 0 1) //6
    (0 -0.25 1) //7
    
  
);

blocks
(
    hex (0 1 2 3 4 5 6 7) (50 50 50) simpleGrading (1 1 1)
);

edges
(
  arc 0 1 (0.17677 0.17677 0) 
arc 1 2 (-0.17677 0.17677 0)
arc 2 3 (-0.17677 -0.17677 0)
arc 3 0 (0.17677 -0.17677 0)
    
 arc 4 5 (0.17677 0.17677 1) 
arc 5 6 (-0.17677 0.17677 1)
arc 6 7 (-0.17677 -0.17677 1)
arc 7 4 (0.17677 -0.17677 1)
);

boundary
(
    inlet
    {
       
        
        
        type    patch;
        faces
        (
            (3 2 1 0)
        );
    }
    outlet
    {
        type patch;
        faces
        (
            (4 5 6 7)
          
        );
    }
    walls
    {
        type wall;
        faces
        (
              (0 1 5 4)
            (1 2 6 5)
            (2 3 7 6)
            (3 0 4 7)
	  
        );
    }
   
    
);

mergePatchPairs
(
);

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

[yambanshee]

To make an axi-symmetric mesh for a cylinder in blockmesh, the best block structure to use is something like what is shown in the attached figure

[ssa_cfd]

hi yambanshee,

I already made it using four hex blocks. Thanks for your reply.

[BIRAJ]

Hi ssa_cfd, can you share me the blockMesh file of axisymmetric mesh in cylinder? Thank you