[Mirage12]

i would like to refine the mesh around a half cylinder, that is why i used simpleGrading to refine the area near to the surface of the half-cylinder, in order to capture the boundary layer. however it is not working ...

here is my blockMeshDict :

// The OpenFOAM Project // File: blockMeshDict
  /*
  -------------------------------------------------------------------------------
   =========         | dictionary
   \\      /         |
    \\    /          | Name:   blockMeshDict
     \\  /           | Family: FoamX configuration file
      \\/            |
      F ield         | OpenFOAM version: 2.3
      O peration     | Product of Nabla Ltd.
      A and          |
      M anipulation  | author: Amine Abd.
  -------------------------------------------------------------------------------
  */
  // FoamX Case Dictionary.
  
  FoamFile
  {
      version         2.0;
      format          ascii;
  
      root            "";
      case            "";
      instance        "";
      local           "";
  
      class           dictionary;
      object          blockMeshDict;
  }
 
  // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  
 convertToMeters 1;
  
  vertices
  (

    (-0.5 0 0)//0
    (-0.353553 0.353553 0)//1
    (0 0.5 0)//2
    (24 0.5 0)//3
    (24 -0.5 0)//4
    (0 -0.5 0)//5
    (-0.353553 -0.353553 0)//6
    (-1 0 0)//7
    (-0.707107 0.707107 0)//8
    (0 1 0)//9
    (24 1 0)//10
    (24 -1 0)//11
    (0 -1 0)//12
    (-0.707107 -0.707107 0)//13
    (-8 0 0)//14
    (-8 0.707107 0)//15
    (-8 8 0)//16
    (-0.707107 8 0)//17
    (0 8 0)//18
    (24 8 0)//19
    (24 -8 0)//20
    (0 -8 0)//21
    (-0.707107 -8 0)//22
    (-8 -8 0)//23
    (-8 -0.707107 0)//24-------------
    (-0.5 0 0.1)//25
    (-0.353553 0.353553 0.1)//26
    (0 0.5 0.1)//27
    (24 0.5 0.1)//28
    (24 -0.5 0.1)//29
    (0 -0.5 0.1)//30
    (-0.353553 -0.353553 0.1)//31
    (-1 0 0.1)//32
    (-0.707107 0.707107 0.1)//33
    (0 1 0.1)//34
    (24 1 0.1)//35
    (24 -1 0.1)//36
    (0 -1 0.1)//37
    (-0.707107 -0.707107 0.1)//38
    (-8 0 0.1)//39
    (-8 0.707107 0.1)//40
    (-8 8 0.1)//41
    (-0.707107 8 0.1)//42
    (0 8 0.1)//43
    (24 8 0.1)//44
    (24 -8 0.1)//45
    (0 -8 0.1)//46
    (-0.707107 -8 0.1)//47
    (-8 -8 0.1)//48
    (-8 -0.707107 0.1)//49
    




  );
  
  blocks
  (


    hex (7 0 1 8 32 25 26 33) (50 50 1) simpleGrading (1 1 1)//1
    hex (8 1 2 9 33 26 27 34) (50 50 1) simpleGrading (1 1 1)//2
    hex (2 3 10 9 27 28 35 34) (200 50 1) simpleGrading (16469 1 1)//3
    hex (12 11 4 5 37 36 29 30) (200 50 1) simpleGrading (16469 1 1)//4
    hex (13 12 5 6 38 37 30 31) (50 50 1) simpleGrading (1 1 1)//5
    hex (13 6 0 7 38 31 25 32) (50 50 1) simpleGrading (1 1 1)//6
    hex (14 7 8 15 39 32 33 40) (50 50 1) simpleGrading (0.03 1 1)//7
    hex (15 8 17 16 40 33 42 41) (50 80 1) simpleGrading (0.03 20 1)//8
    hex (8 9  18 17 33 34 43 42) (50 80 1) simpleGrading (1 20 1)//9
    hex (9 10 19 18 34 35 44 43) (200 80 1) simpleGrading (16469 20 1)//10
    hex (21 20 11 12 46 45 36 37) (200 50 1) simpleGrading (16469 0.05 1)//11
    hex (22 21 12 13 47 46 37 38) (50 50 1) simpleGrading (1 0.05 1)//12
    hex (23 22 13 24 48 47 38 49) (50 50 1) simpleGrading (0.03 0.05 1)//13
    hex (24 13 7 14 49 38 32 39) (50 50 1) simpleGrading (0.03 1 1)//14
    hex (5 4 3 2 30 29 28 27) (200 200 1) simpleGrading (16469 1 1)//15

  );
  
  edges

  (
    arc 5 6 (-0.17101 -0.469846 0)
    arc 6 0 (-0.469846 -0.17101 0)
    arc 0 1 (-0.469846 0.17101 0)
    arc 1 2 (-0.17101 0.469846 0)
    arc 9 8 (-0.34202 0.939693 0)
    arc 8 7 (-0.939693 0.34202 0)
    arc 7 13 (-0.939693 -0.34202 0)
    arc 13 12 (-0.34202 -0.939693 0)//----
    arc 30 31 (-0.17101 -0.469846 0.1)
    arc 31 25 (-0.469846 -0.17101 0.1)
        arc 25 26 (-0.469846 0.17101 0.1)
    arc 26 27 (-0.17101 0.469846 0.1)
    arc 34 33 (-0.34202 0.939693 0.1)
    arc 33 32 (-0.939693 0.34202 0.1)
    arc 32 38 (-0.939693 -0.34202 0.1)
    arc 38 37 (-0.34202 -0.939693 0.1)
    
    

  );
  

boundary
(

 inlet
    {
        type patch;
        faces
        (
          
    (16 15 40 41)
    (15 14 39 40)
    (14 24 49 39)
    (24 23 48 49)      
  );
    }
    
 outlet
    {
        type patch;
        faces
        ( 
            (10 19 44 35)
            (3 10 35 28)
            (4 3 28 29)
        (11 4 29 36)
        (20 11 36 45)    
            
       
               
        );
    }
 
 fixedWalls
    {
        type wall;
        faces
        (
    (17 16 41 42)
    (18 17 42 43)
    (19 18 43 44)
    (21 20 45 46)
    (22 21 46 47)
    (23 22 47 48)
    (2 5 30 27)
    (0 1 26 25)
    (1 2 27 26)
    (6 0 25 31)
    (5 6 31 30)

         
           );
    }      

    frontAndBack
    {
        type empty;
        faces
        ( 

    (20 21 12 11)//b11
    (11 12 5 4)//b4
    (4 5 2 3)//b15
    (3 2 9 10)//b3
    (10 9 18 19)//b10
    (9 8 17 18)//b9
    (8 15 16 17)//b8
    (7 14 15 8)//b7
    (13 24 14 7)//b14
    (22 23 24 13)//b13
    (21 22 13 12)//b12
    (12 13 6 5)//b5
    (13 7 0 6)//b6
    (0 7 8 1)//b1
    (1 8 9 2)//b2-------spiegel
    (46 45 36 37)//b11
    (37 36 29 30)//b4
    (30 29 28 27)//b15
    (27 28 35 34)//b3
    (34 35 44 43)//b10
    (33 34 43 42)//b9
    (40 33 42 41)//b8
    (39 32 33 40)//b7
    (49 38 32 39)//b14
    (48 47 38 49)//b13
    (47 46 37 38)//b12
    (38 37 30 31)//b5
    (38 31 25 32)//b6
    (32 25 26 33)//b1
    (33 26 27 34)//b2


           
       
        );
    }
);


mergePatchPairs
(
);

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

any idea, how to refine the mesh ?

Thx